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‘A woman is not a baby-making machine’: a brief history of South Korea’s 4B movement – and why it’s making waves in America

<a href="https://theconversation.com/profiles/ming-gao-1496188">Ming Gao</a>, <a href="https://theconversation.com/institutions/australian-catholic-university-747">Australian Catholic University</a> In South Korea, a growing number of young women are rejecting societal expectations of marriage, motherhood and heterosexual relationships, known as the “4B Movement” or the “4 Nos”. The “B” is a homophone for the Korean word bi (비/非), meaning “no”, representing the movement’s four principles: bihon (no marriage), bichulsan (no childbirth), biyeonae (no dating) and bisekseu (no sex). By refusing to marry, have children, engage in romance, or participate in sexual relationships with men, 4B feminists seek to redefine their lives outside the confines of traditional gender roles. In the wake of the reelection of Donald Trump, there has been <a href="https://www.abc.net.au/news/2024-11-10/donald-trump-win-4b-movement-male-supremacists-make-threats/104575732">increased interest</a> in the 4B movement from women in the United States. But what is the 4B Movement, where did it come from, and how is it reshaping the feminist landscape in South Korea and beyond? <h2>Challenges facing young women</h2> The 4B Movement reflects <a href="https://www.khan.co.kr/national/national-general/article/202004140938001">a broader dissatisfaction</a> among young South Korean women who face instability of housing, digital sexual violence, economic disparities and cultural pressures. It emerged in the mid- to late-2010s, following a surge of interest in feminism in South Korea, and spread primarily through women’s online communities. The roots of the 4B Movement lie in South Korea’s rapid economic transformation and the subsequent challenges it posed for younger generations of the 2000s. For young women, economic insecurity is compounded by systemic gender inequality. South Korea <a href="https://www.straitstimes.com/asia/east-asia/south-korea-s-gender-pay-gap-worst-in-oecd">consistently ranks</a> worst in the OECD for the gender wage gap, and social mobility remains limited. Against this backdrop, traditional life paths – marriage, childbearing and homemaking – have become less appealing. Living an alternative life without men emerged as a radical strategy for young digital feminists to challenge the rigid patriarchy in South Korea. The <a href="https://www.khan.co.kr/national/national-general/article/202405172212001">senseless killing</a> in 2016 of a woman in a train station toilet by a man in Seoul shocked the nation and fuelled the movement. Online platforms became spaces where women could share their frustrations, critique patriarchal norms and organise protests. During this period communities like radical feminist online groups gained traction. Among these was the <a href="https://www.bbc.com/korean/news-44329328">Tal-Corset</a> (escape the corset) movement, which encouraged women to reject societal beauty standards by foregoing makeup, cosmetic surgery and restrictive clothing. The 4B Movement built on this momentum, targeting not only beauty standards but the very institutions that sustain patriarchy. It collectively challenges the notion that women’s value lies in their ability to support men and sustain the family unit. <h2>‘A woman is not a baby-making machine’</h2> The birth rate in South Korea ranks among the <a href="https://worldpopulationreview.com/country-rankings/birth-rate-by-country">lowest in the world</a>. The government has long viewed this as a national crisis. Policies such as subsidised housing for newlyweds and tax incentives for families have sought to encourage marriage and childbearing. In 2016, the government launched a national <a href="https://www.womennews.co.kr/news/articleView.html?idxno=248514">pink birth map</a> visualising the number of women of reproductive age in each district. It sparked outrage. Women criticised it as reducing them to reproductive tools, proclaiming, “<a href="https://www.nocutnews.co.kr/news/4713565">my womb is not national property</a>” and “<a href="https://www.youtube.com/watch?v=6FsEWD1bi3E">a woman is not a baby-making machine</a>”. For many 4B feminists, these policies represent a stark example of how the state prioritises population growth over women’s autonomy. In response, the movement frames its rejection of marriage and motherhood as an act of political resistance. As one <a href="https://www.womennews.co.kr/news/articleView.html?idxno=111598">protest slogan</a> declared: “End population policies! Stop blaming women”. <h2>Living on their own terms</h2> Despite its growing influence, the 4B Movement faces significant challenges. The radical principles have sparked backlash, with critics labelling participants as selfish or anti-social. Swearing off men as a form of protest against patriarchal structures and traditional marital norms is sometimes (mis)interpreted as implicitly favouring <a href="https://brunch.co.kr/brunchbook/radsview2">lesbianism</a>, given its stance against heterosexual relationships. The movement has also attracted negative political attention. <a href="https://www.khan.co.kr/national/national-general/article/202004140938001">Lee Seung-cheon</a>, a 58-year-old Democratic Party candidate, pledged to introduce “measures to reject the 4B Movement” as part of his policy campaign in 2020. Yet 4B feminists remain steadfast in their vision of a future where women can live on their own terms. Their rejection of traditional life paths is not a retreat into isolation but an attempt to create new ways of being free from patriarchal constraints. As one participant noted, rejecting marriage allows women to envision futures beyond societal deadlines like “<a href="https://brunch.co.kr/@404homealone/34">a woman’s age has an expiration date</a>”. <h2>An international movement</h2> The 4B Movement’s radical critique of patriarchy has resonated internationally. 4B Movement ideas are starting to strike a chord in the US. The movement’s core principles align with broader feminist critiques of patriarchy and capitalism, which have intensified in response to political developments such as Trump’s rhetoric and debates over reproductive rights. In the US, Trump’s presidency (and now his return) has been a flashpoint for feminist activism. Policies restricting access to abortion, coupled with an increase in conservative rhetoric around women’s rights, have galvanised movements that resist patriarchal structures. For American feminists, the 4B Movement offers a framework for resistance that goes beyond economic precarity. It provides a roadmap for rejecting political conflicts, focusing on reclaiming agency by prioritising autonomy over their own bodies and rights. 6B4T is inspired by the 4B Movement and has gained particular attention <a href="https://weibo.com/1263977197/KaFZGjoG4">in China</a>. This version incorporates additional principles, including rejecting consumerism and fostering mutual aid among unmarried women. The spread of 4B ideas across Asia and beyond highlights the universality of feminist struggles. As the movement continues to evolve, its impact extends beyond South Korea, sparking conversations about gender, autonomy and the future of feminism. Whether embraced or contested, the 4B Movement forces society to confront uncomfortable truths about the cost of sustaining patriarchy – and perhaps the possibilities of living without it. <hr /> Correction: 6B4T is inspired by the 4B movement and gained attention in China; it did not originate in China.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/243355/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/ming-gao-1496188">Ming Gao</a>, Research Scholar, Gender and Women's History Research Centre, <a href="https://theconversation.com/institutions/australian-catholic-university-747">Australian Catholic University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/a-woman-is-not-a-baby-making-machine-a-brief-history-of-south-koreas-4b-movement-and-why-its-making-waves-in-america-243355">original article</a>.

Relationships

What washing machine settings can I use to make my clothes last longer?

<a href="https://theconversation.com/profiles/alessandra-sutti-1513345">Alessandra Sutti</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a>; <a href="https://theconversation.com/profiles/amol-patil-1513347">Amol Patil</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a>, and <a href="https://theconversation.com/profiles/maryam-naebe-1513346">Maryam Naebe</a>, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> Orbiting 400 kilometres above Earth’s surface, the astronauts on the International Space Station live a pretty normal social life, if not for one thing: they happily wear their unwashed clothes <a href="https://www.nasa.gov/centers-and-facilities/glenn/nasa-glenn-interns-take-space-washing-machine-designs-for-a-spin/">for days and weeks at a time</a>. They can’t do their laundry <a href="https://www.esa.int/Enabling_Support/Space_Engineering_Technology/Keeping_your_underwear_clean_on_the_Moon">just yet</a> because water is scarce up there. But down here on Earth, washing clothes is a large part of our lives. <a href="https://bigee.net/media/filer_public/2013/03/28/bigee_domestic_washing_machines_worldwide_potential_20130328.pdf">It’s estimated</a> that a volume of water equivalent to 21,000 Olympic swimming pools is used every day for domestic laundry worldwide. Fibres from our clothes make their way into the environment via the air (during use or in the dryer), water (washing) and soil (lint rubbish in landfill). Most of this fibre loss is invisible – we often only notice our favourite clothing is “disappearing” when it’s too late. How can you ensure your favourite outfit will outlast your wish to wear it? Simple question, complex answer. <h2>Washing machines are not gentle</h2> When you clean the filters in your washing machine and dryer, how often do you stop to think that the lint you’re holding <a href="https://theconversation.com/uk-laundry-releases-microfibres-weighing-the-equivalent-of-1-500-buses-each-year-199712">was, in fact, your clothes</a>? Laundering is harsh on our clothes, and <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0250346">research confirms this</a>. Several factors play a role: the type of washing machine, the washing cycle, detergents, temperature, time, and the type of fabric and yarn construction. There are two types of domestic washing machines: top-loader and front-loader. Mechanical agitation (the way the machine moves the clothes around) is one of the things that helps ease dirt off the fabric. Top-loaders have a vertical, bucket-like basket with a paddle, which sloshes clothes around in a large volume of water. Front-loaders have a horizontal bucket which rotates, exposing the clothes to a smaller volume of water – it takes advantage of gravity, not paddles. Top-loading machines <a href="https://link.springer.com/article/10.1007/s12541-010-0047-7">tend to be more aggressive</a> towards fabrics than front-loaders due to the different mechanical action and larger volumes of water. Washing machine panels also present many choices. Shorter, low-temperature programs <a href="https://clevercare.info/more-eco-temperature-tips">are usually sufficient for everyday stains</a>. Choose longer or <a href="https://iprefer30.eu/animations/UK/wash-brochure-uk.pdf">high-temperature programs</a> only for clothing you have concerns about (healthcare uniforms, washable nappies, etc.). Generally, washing machine programs are carefully selected combinations of water volume, agitation intensity and temperature recommended by the manufacturer. They take into consideration the type of fabric and its level of cleanliness. Select the wrong program and you can say goodbye to your favourite top. For example, high temperatures or harsh agitation may cause some fibres to weaken and break, causing holes in the garment. <h2>Some fabrics lose fibres more easily than others</h2> At a microscopic level, the fabric in our clothes is made of yarns – individual fibres twisted together. The nature and length of the fibres, the way they are twisted and the way the yarns form the fabric can determine how many fibres will be lost during a wash. In general, if you want to lose fewer fibres, you should wash less frequently, but some fabrics are affected more than others. Open fabric structures (knits) with loose yarns <a href="https://www.nature.com/articles/s41598-021-98836-6">can lose more fibres</a> than tighter ones. Some sports clothing, like running shirts, are made of continuous filament yarn. These fibres are less likely to come loose in the wash. Cotton fibres are only a few centimetres long. Twisted tightly together into a yarn, they can still escape. Wool fibres are also short, but have an additional feature: scales, which make wool clothes much more delicate. Wool fibres can come loose like cotton ones, but also tangle with each other during the wash due to their scales. This last aspect is what causes wool garments to shrink when <a href="https://journals.sagepub.com/doi/abs/10.1177/004051756403400303">exposed to heat</a> and agitation. <h2>Go easy on the chemicals</h2> The type of detergent and other products you use also makes a difference. Detergents contain a soap component, enzymes to make stains easier to remove at low temperature, and fragrances. Some contain harsher compounds, such as bleaching or whitening agents. Modern detergents are very effective at <a href="https://www.choice.com.au/home-and-living/laundry-and-cleaning/laundry-detergents/review-and-compare/laundry-detergents">removing stains such as food</a>, and you don’t need to use much. An incorrect choice of wash cycles, laundry detergent and bleaching additives could cause disaster. Certain products, like bleach, can <a href="https://site.extension.uga.edu/textiles/textile-basics/understand-your-fibers/">damage some fibres like wool and silk</a>. Meanwhile, research on <a href="https://www.sciencedirect.com/science/article/pii/S0269749120366872?via%3Dihub">fabric softeners and other treatments</a> <a href="https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0233332&type=printable">continues</a> – there’s no one-size-fits-all answer about their potential impact on our clothes. <h2>Just skip laundry day</h2> So, how to ensure your clothes last longer? The main tip is to wash them less often. When it’s time for a wash, carefully read and follow the care labels. In the future, our washing machines will <a href="https://www.teknoscienze.com/tks_article/trends-in-laundry-by-2030/">recognise fabrics and select the wash cycle</a>. For now, that’s our responsibility. And the next time you throw your shirt into the dirty laundry basket, stop. Think of the astronauts orbiting above Earth and ask yourself: if they can go without clean laundry for a few days, maybe I can too? (Although we don’t recommend just burning your dirty undies, either.)<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/224064/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <figure><iframe src="https://www.youtube.com/embed/C1j6KLP492E?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> <a href="https://theconversation.com/profiles/alessandra-sutti-1513345">Alessandra Sutti</a>, Associate Professor, Institute for Frontier Materials, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a>; <a href="https://theconversation.com/profiles/amol-patil-1513347">Amol Patil</a>, Research Engineer, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a>, and <a href="https://theconversation.com/profiles/maryam-naebe-1513346">Maryam Naebe</a>, Associate professor, <a href="https://theconversation.com/institutions/deakin-university-757">Deakin University</a> Image credits: Shutterstock This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/what-washing-machine-settings-can-i-use-to-make-my-clothes-last-longer-224064">original article</a>.

Home & Garden

Why and how often do I need to wash makeup brushes and sponges?

<a href="https://theconversation.com/profiles/enzo-palombo-249510">Enzo Palombo</a>, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> and <a href="https://theconversation.com/profiles/rosalie-hocking-1428271">Rosalie Hocking</a>, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> From the bristles of brushes to the porous surfaces of sponges, your makeup kit can harbour a host of bacteria and fungi. These potentially hazardous contaminants can originate not only from the cosmetics themselves, but also from the very surface of our skin. So, how can we keep things hygienic and avoid microbial growth on makeup brushes and sponges? Here’s what you need to know. <h2>How do germs and fungi get in my brushes and sponges?</h2> Germs and fungi can make their way into your makeup kit in lots of ways. Ever flushed a toilet with the lid open with your makeup brushes nearby? There’s a good chance <a href="https://theconversation.com/mobile-phones-are-covered-in-germs-disinfecting-them-daily-could-help-stop-diseases-spreading-135318">faecal particles</a> have landed on them. Perhaps a family member or housemate has used your eyeshadow brush when you weren’t looking, and transferred some microbes across in the process. Bacteria that trigger a pimple outbreak can be easily transferred from the surface of your skin to a makeup brush or sponge. And tiny little mites called Demodex mites, which have been linked to certain rashes and acne, live on your skin, as well, and so may end up in your sponge or brushes. Bacterial contamination of <a href="https://pubmed.ncbi.nlm.nih.gov/38020232/">lip cosmetics</a>, in particular, can pose a risk of skin and eye infections (so keep that in mind if you use lip brushes). Lipsticks are frequently contaminated with bacteria such as Staphylococcus aureus, E. coli, and Streptococcus pneumoniae. Low-quality cosmetics are more likely to have higher and more diverse microbial growth compared to <a href="https://www.sciencedirect.com/science/article/pii/S1319562X23002978?pes=vor">high-quality cosmetics</a>. Brushes exposed to sensitive areas like the eyes, mouth and nose are particularly susceptible to being potential sources of infection. The range of conditions caused by these microorganisms includes: <ul> <li> abscesses </li> <li> skin and soft tissue infections </li> <li> skin lesions </li> <li> rashes </li> <li> and dermatitis. </li> </ul> In severe cases, infections can lead to invasion of the bloodstream or deep tissues. Commercially available cosmetics contain varying amounts and types of preservatives aimed at inhibiting the growth of fungi and bacteria. But when you apply makeup, different cosmetics with unique formulations of preservatives can become mixed. When a preservative meant for one product mixes with others, it might not work as well because they have different water amounts or pH levels. So preservatives are not foolproof. We also need to observe good hygiene practices when it comes to brushes and other cosmetics applicators. <h2>Keeping brushes clean</h2> Start with the basics: never <a href="https://www.semanticscholar.org/paper/Isolation-of-Pathogenic-Microbes-from-Beauty-Salons-Hassan-Hamad/0199635290628fe326fcd04a2b8a2422884a8240">share makeup brushes or sponges</a>. Everyone carries different microbes on their skin, so sharing brushes and sponges means you are also sharing germs and fungi. If you need to share makeup, use something disposable to apply it, or make sure any shared brushes are washed and sterilised before the next person uses it. Clean makeup brushes by washing with hot soapy water and rinsing thoroughly. How often? Stick to a cleaning routine you can repeat with consistency (as opposed to a deep clean that is done annually). <a href="https://www.aad.org/public/everyday-care/skin-care-secrets/routine/clean-your-makeup-brushes#:%7E:text=To%20protect%20your%20skin%20and,every%207%20to%2010%20days.">Once a week</a> might be a good goal for some, while others may need to wash more regularly if they are heavy users of makeup. Definitely wash straight away if someone else has used your brushes or sponges. And if you’ve had an eye infection such as conjunctivitis, ensure you clean applicators thoroughly after the infection has resolved. You can use bactericidal soap, 70% ethanol or chlorhexidine solutions to wash. Just make sure you wash very thoroughly with hot water after, as some of these things can irritate your skin. (While some people online say alcohol can degrade brushes and sponges, opinion seems to be mixed; in general, most disinfectants are unlikely to cause significant corrosion.) For some brushes, heating or steaming them and letting them dry may also be an effective sterilisation method once they are washed with detergent. Microwaving sponges isn’t a good idea because while the heat generated by a domestic microwave would kill microbes, it would need temperatures approaching 100°C for a decent period of time (at least several minutes). The heat could melt some parts of the sponge and hot materials could be a scalding hazard. Once clean, ensure brushes and sponges are stored in a dry place away from water sources (and not near an open toilet). If you’re having makeup applied professionally, brushes and applicators should be sterilised or changed from person to person. <h2>Should I wash them with micellar water?</h2> No. Not only is this expensive, it’s unnecessary. The same benefits can be achieved with cheaper detergents or alcohol (just rinse brushes carefully afterwards). Disinfection methods such as using bactericidal soap, 70% ethanol, or chlorhexidine are all very good at reducing the amount of microbes on your brushes and sponges.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/220280/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/enzo-palombo-249510">Enzo Palombo</a>, Professor of Microbiology, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> and <a href="https://theconversation.com/profiles/rosalie-hocking-1428271">Rosalie Hocking</a>, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/why-and-how-often-do-i-need-to-wash-makeup-brushes-and-sponges-220280">original article</a>.

Beauty & Style

How often should you wash your sheets and towels?

<a href="https://theconversation.com/profiles/rietie-venter-100529">Rietie Venter</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> Everyone seems to have a different opinion when it comes to how often towels and <a href="https://7news.com.au/video/lifestyle/cleaning/dr-karl-on-how-often-you-should-wash-our-sheets-bc-6320410318112">bed sheets should be washed</a>. While many people might wonder whether days or weeks is best, in one survey from the United Kingdom, <a href="https://www.bbc.com/news/newsbeat-61259074">almost half of single men</a> reported not washing their sheets for up to four months at a time. It’s fairly clear that four months is too long to leave it, but what is the ideal frequency? Bed linen and towels are quite different and so should be washed at different intervals. While every week or two will generally suffice for sheets, towels are best washed every few days. Anyway, who doesn’t love the feeling of a fresh set of sheets or the smell of a newly laundered towel? <h2>Why you should wash towels more often</h2> When you dry yourself, you deposit thousands of <a href="https://www.frontiersin.org/articles/10.3389/fmicb.2018.02362/full">skin cells</a> and millions of <a href="https://www.ajicjournal.org/article/S0196-6553(23)00402-9/fulltext">microbes</a> onto the towel. And because you use your towel to dry yourself after a shower or bath, your towel is regularly damp. You also deposit a hefty amount of dead skin, microbes, sweat and oils <a href="https://theconversation.com/your-bed-probably-isnt-as-clean-as-you-think-a-microbiologist-explains-163513">onto your sheets</a> every night. But unless you’re a prolific night sweater, your bedding doesn’t get wet after a night’s sleep. Towels are also made of a thicker material than sheets and therefore tend to stay damp for longer. So what is it about the dampness that causes a problem? Wet towels are a breeding ground for bacteria and moulds. <a href="https://www.qld.gov.au/housing/public-community-housing/public-housing-tenants/looking-after-your-home/safety/mould">Moulds</a> especially love <a href="https://www.asthmaandlung.org.uk/living-with/indoor-air-pollution/allergies">damp environments</a>. Although mould won’t necessarily be visible (you would need significant growth to be able to see it) this can lead to an unpleasant smell. As well as odours, <a href="https://www.nhs.uk/common-health-questions/infections/can-clothes-and-towels-spread-germs/">exposure to these microbes</a> in your towels and sheets can cause <a href="https://aafa.org/allergies/types-of-allergies/insect-allergy/dust-mite-allergy/">asthma</a>, allergic skin irritations, or other <a href="https://wwwnc.cdc.gov/eid/article/11/4/04-1094_article">skin infections</a>. <h2>So what’s the ideal frequency?</h2> For bedding, it really depends on factors such as whether you have a bath or shower just before going to bed, or if you fall into bed after a long, sweaty day and have your shower in the morning. You will need to wash your sheets more regularly in the latter case. As a rule of thumb, once a week or every two weeks should be fine. Towels should ideally be washed more regularly – perhaps every few days – while your facecloth should be cleaned after every use. Because it gets completely wet, it will be wet for a longer time, and retain more skin cells and microbes. Wash your towels at a high temperature (for example, 65°C) as that will <a href="https://pubmed.ncbi.nlm.nih.gov/34465009/">kill many microbes</a>. If you are conscious of saving energy, you can use a lower temperature and add a cup of vinegar to the wash. The vinegar will kill microbes and <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8231443/">prevent bad smells</a> from developing. Clean your washing machine regularly and dry the fold in the rubber after every wash, as this is another place microbes like to grow. <h2>Smelly towels</h2> What if you regularly wash your towels, but they still smell bad? One of the reasons for this pong could be that you’ve left them in the washing machine too long after the wash. Especially if it was a warm wash cycle, the time they’re warm and damp will allow microbes to happily grow. Under <a href="https://textbookofbacteriology.net/growth_3.html">lab conditions</a> the number of these bacteria can double every 30 minutes. It’s important to hang your towel out to dry after use and not to leave towels in the washing machine after the cycle has finished. If possible, hang your towels and bedding out in the sun. That will dry them quickly and thoroughly and will foster that lovely fresh, clean cotton smell. Using a dryer is a good alternative if the weather is bad, but outdoors in the sun is always better if possible. Also, even if your towel is going to be washed, don’t throw a wet towel into the laundry basket, as the damp, dirty towel will be an ideal place for microbes to breed. By the time you get to doing your washing, the towel and the other laundry around it may have acquired a bad smell. And it can be difficult to get your towels smelling fresh again. <h2>What about ‘self-cleaning’ sheets and towels?</h2> Some companies sell “quick-dry” towels or “self-cleaning” towels and bedding. Quick-dry towels are made from synthetic materials that are weaved in a way to allow them to dry quickly. This would help prevent the growth of microbes and the bad smells that develop when towels are damp for long periods of time. But the notion of self-cleaning products is more complicated. Most of these products contain <a href="https://www.degruyter.com/document/doi/10.1515/chem-2016-0005/html">nanosilver</a> or copper, antibacterial metals that kill micro-organisms. The antibacterial compounds will stop the growth of bacteria and can be useful to limit smells and reduce the frequency with which you need to clean your sheets and towels. However, they’re not going to remove dirt like oils, skin flakes and sweat. So as much as I would love the idea of sheets and towels that clean themselves, that’s not exactly what happens. Also, excessive use of antimicrobials <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6636436/pdf/idr-12-1985.pdf">such as nanosilver</a> can lead to <a href="https://www.frontiersin.org/articles/10.3389/fmicb.2021.652863/full">microbes becoming resistant</a> to them.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/216083/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/rietie-venter-100529">Rietie Venter</a>, Associate professor, Clinical and Health Sciences, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/how-often-should-you-wash-your-sheets-and-towels-216083">original article</a>.

Home & Garden

Treadmill, exercise bike, rowing machine: what’s the best option for cardio at home?

<a href="https://theconversation.com/profiles/lewis-ingram-1427671">Lewis Ingram</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a>; <a href="https://theconversation.com/profiles/hunter-bennett-1053061">Hunter Bennett</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a>, and <a href="https://theconversation.com/profiles/saravana-kumar-181105">Saravana Kumar</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> Cardio, short for cardiovascular exercise, refers to any form of rhythmic physical activity that increases your heart rate and breathing so the heart and lungs can deliver oxygen to the working muscles. Essentially, it’s the type of exercise that gets you huffing and puffing – and fills many people with dread. People often do cardio to <a href="https://pubmed.ncbi.nlm.nih.gov/30003901/">lose weight</a>, but it’s associated with a variety of health benefits including reducing the risk of <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6481017/">heart disease</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/30191075/">stroke</a> and <a href="https://pubmed.ncbi.nlm.nih.gov/27707740/">falls</a>. Research shows cardio also improves <a href="https://pubmed.ncbi.nlm.nih.gov/29334638/">cognitive function</a> and <a href="https://pubmed.ncbi.nlm.nih.gov/26978184/">mental health</a>. The <a href="https://www.who.int/news-room/fact-sheets/detail/physical-activity">World Health Organization</a> recommends a minimum of 150 minutes of moderate-intensity or 75 minutes of vigorous-intensity cardio per week. There are many ways to do cardio, from playing a team sport, to riding your bike to work, to going for a jog. If you’re willing and able to invest in a piece of equipment, you can also do cardio at home. The treadmill, stationary bike and rowing machine are the most popular pieces of cardio equipment you’ll find in a typical gym, and you can buy any of these for your home too. Here’s how to know which one is best for you. <h2>The treadmill</h2> In terms of effectiveness of exercise, it’s hard to look past the treadmill. Running uses most of your major muscle groups and therefore leads to greater increases in <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1334197/">heart rate</a> and energy expenditure compared to other activities, such as cycling. As a bonus, since running on a treadmill requires you to support your own body weight, it also helps to build and maintain <a href="https://pubmed.ncbi.nlm.nih.gov/26562001/">your bones</a>, keeping them strong. This becomes even more important <a href="https://www.niams.nih.gov/health-topics/exercise-your-bone-health">as you get older</a> as the risk of developing medical conditions such as osteopenia and osteoporosis – where the density of your bones is reduced – increases. But the treadmill may not be for everyone. The weight-bearing nature of running may exacerbate pain and cause swelling in people with common joint conditions such as osteoarthritis. Also, a treadmill is likely to require greater maintenance (since most treadmills are motorised), and can take up a lot of space. <h2>Stationary bike</h2> The stationary bike provides another convenient means to hit your cardio goals. Setting the bike up correctly is crucial to ensure you are comfortable and to reduce the risk of injury. A general rule of thumb is that you want a slight bend in your knee, as in the picture below, when your leg is at the bottom of the pedal stroke. While cycling has significant benefits for <a href="https://pubmed.ncbi.nlm.nih.gov/21496106/">cardiovascular</a> and metabolic health, since it’s non-weight-bearing it doesn’t benefit your <a href="https://www.sciencedirect.com/science/article/pii/S0026049507003253">bones</a> to the same extent as walking and running. On the flipside, it offers a great cardio workout without stressing your joints. <h2>Rowing machine</h2> If you’re looking to the get the best cardio workout in the least amount of time, the rowing machine might be for you. Because rowing requires you to use all of your major muscle groups including the upper body, your heart and lungs have to work even harder than they do when <a href="https://pubmed.ncbi.nlm.nih.gov/32627051/">running and cycling</a> to <a href="https://pubmed.ncbi.nlm.nih.gov/8325720/">deliver oxygen</a> to those working muscles. This means the energy expended while rowing is comparable to running and <a href="https://pubmed.ncbi.nlm.nih.gov/3193864/">greater than cycling</a>. But before you rush off to buy a new rower, there are two issues to consider. First, the technical challenge of rowing is arguably greater than that of running or cycling, as the skill of rowing is often less familiar to the average person. While a coach or trainer can help with this, just remember a good rowing technique should be felt primarily in your legs, not your arms and back. Second, the non-weight-bearing nature of rowing means it misses out on the same bone health benefits offered by the treadmill – although there is some evidence it still can increase bone density <a href="https://pubmed.ncbi.nlm.nih.gov/7551766/">to a smaller degree</a>. Nevertheless, like cycling, this drawback of rowing may be negated by offering a more joint-friendly option, providing a great alternative for those with joint pain who still want to keep their heart and lungs healthy. <h2>So, what’s the best option?</h2> It depends on your goals, what your current health status is, and, most importantly, what you enjoy the most. The best exercise is the one that gets done. So, choose whichever piece of equipment you find the most enjoyable, as this will increase the likelihood you’ll stick to it in the long term.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/213352/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/lewis-ingram-1427671">Lewis Ingram</a>, Lecturer in Physiotherapy, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a>; <a href="https://theconversation.com/profiles/hunter-bennett-1053061">Hunter Bennett</a>, Lecturer in Exercise Science, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a>, and <a href="https://theconversation.com/profiles/saravana-kumar-181105">Saravana Kumar</a>, Professor in Allied Health and Health Services Research, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> Image credits: Getty Images This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/treadmill-exercise-bike-rowing-machine-whats-the-best-option-for-cardio-at-home-213352">original article</a>.

Body

5 things we all do wrong in the shower

While showering every day keeps us smelling fresh, it actually disturbs the natural bacteria on our skin and strips it of the oils that keep it supple. In fact, many shower habits can actually be very unhygienic. Experts reveal what we’re doing wrong, and what to do instead. 1. Showering everyday The University of California found that too much washing can actually be bad for you, because it strips away beneficial bugs that the body uses to help ward off infections. Apparently, if we simply wash our hands and below the belt regularly we can skip a full shower every day. 2. Showering for too long Water is an irritant, so the longer you’re in there, the more irritated and dry your skin will become. Oil from the sebaceous glands hydrate the skin, so showering for too long strips it of moisture. 3. Rubbing soap on your whole body Soap dislodges dirt and oil from the body, allowing water to wash it away. But the skin on the arms and legs doesn't contain a lot of oil, so cleaning them with soap just makes them dry. Instead, simply focus on the armpits, buttocks, groin and feet 4. Letting the shower water blast over your face A hot shower can cause and exacerbate fragile capillary networks in the cheeks, leading to unattractive, visible capillary networks and worsened impaired skin conditions, experts warn. 5. Using a pouf Poufs and loofahs are a haven for bacteria — the dead skin cells they scrub so well from our body get caught up in the nooks where bacteria can feed on them. Also, because poufs take time to dry and may well retain dead skin cells, it’s a potential source of infection. To keep it clean, wet your pouf and put it on a medium heat in the microwave for 30 to 60 seconds. How would you feel about skipping your daily shower, like one of these tips suggests? Let us now in the comments below. Image credit: Shutterstock Related links: <a href="../health/body/2016/03/ways-to-stay-active-in-winter/">4 ways to stay active in winter</a> <a href="../health/body/2016/04/ways-weather-influences-your-health-and-behaviour/">5 ways weather influences your health and behaviour</a> <a href="../%20http:/www.oversixty.com.au/lifestyle/home-garden/2016/04/how-to-get-the-best-lawn-for-winter/">How to get the best lawn for winter</a>

Beauty & Style

8 hair washing tips to transform your tresses this winter

One curly-haired influencer has shared her secrets to happy and healthy hair with the world, promising small changes that “make a big impact” over all. In a video posted to her social media accounts, Jennie - who goes by ‘The Curly Carr’ online - stressed the importance of learning to properly cleanse hair, and the benefits it can have on the likes of “hair health, definition, shine, volume, and growth”. As she explained, she too used to be guilty of just hopping in the shower, quickly slathering her hair in shampoo, and rinsing to get the job done. “I had no clue what I was doing!” she confessed. “Seems like such a small thing, but makes a big impact.” But luckily for Jennie - and anyone else fortunate enough to hear her top tips - she did learn what she should be doing, working her way towards the luscious locks many dream of, before setting out on her mission to help others on their hair journey. And in just eight simple steps, that won’t cost you a fortune in new products, Jennie has shared her findings, as well as some helpful advice to help with the transition from quickfire wash to thorough and effective hair care. Step one was straightforward enough, with Jennie noting that it’s important to “make sure your hair is thoroughly wet all the way through”. According to some experts, a good wetting with warm water helps hair to open up, allowing for a better conditioning process later on. Step two called for emulsifying shampoo in your hands before it goes anywhere near your head. Essentially, rub it between your hands until it froths up - once you’ve got the suds, it’s time to move on to the hair. Step three instructed hair hopefuls to massage their heads. But, as Jennie advised, do it “with the pads of your fingers, don’t use your nails”. Be gentle up there, just like you would be to your face. Step four followed directly on from three, with the instruction to message “all around your head” and to make sure everything got a good clean. Jennie noted that it may take anywhere from 3-5 minutes, but it would all be worth it to have your scalp cleansed. Step five had Jennie calling for the lengths of hair to be remembered, as “it’s not just your scalp getting buildup with products, dirt, and oil”. Step six was to use a <a href="https://www.priceline.com.au/product/189080/lady-jayne-restorative-scalp-brush-silicon-bristles-1ea">shampoo brush/scalp brush</a>, particularly for those who - like Jennie herself - tended to go a few days between washes, or did a pre-shampoo process. Step seven was another one many would be familiar with, as Jennie noted the importance of making sure all shampoo had been thoroughly washed out “before moving on to conditioner!” And last but not least, step eight instructed viewers to listen to their scalps, as they’d know best when it was time for the next all-important wash. “Your hair can always be refreshed,” Jennie explained, “but if your scalp is dry, itchy, and you can see buildup, it’s time to wash!” <blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 540px; min-width: 326px; padding: 0; width: calc(100% - 2px);" data-instgrm-captioned="" data-instgrm-permalink="https://www.instagram.com/reel/CnmLyOjKDC1/?utm_source=ig_embed&utm_campaign=loading" data-instgrm-version="14"> <div style="padding: 16px;"> <div style="display: flex; flex-direction: row; align-items: center;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;"> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 60px;"> </div> </div> </div> <div style="padding: 19% 0;"> </div> <div style="display: block; height: 50px; margin: 0 auto 12px; width: 50px;"> </div> <div style="padding-top: 8px;"> <div style="color: #3897f0; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: 550; line-height: 18px;">View this post on Instagram</div> </div> <div style="padding: 12.5% 0;"> </div> <div style="display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;"> <div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);"> </div> <div style="background-color: #f4f4f4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;"> </div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);"> </div> </div> <div style="margin-left: 8px;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;"> </div> <div style="width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg);"> </div> </div> <div style="margin-left: auto;"> <div style="width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);"> </div> <div style="background-color: #f4f4f4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);"> </div> <div style="width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);"> </div> </div> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;"> </div> </div> <p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;"><a style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none;" href="https://www.instagram.com/reel/CnmLyOjKDC1/?utm_source=ig_embed&utm_campaign=loading" target="_blank" rel="noopener">A post shared by Jennie 🌷 | Curly Hair Care and Simple Hairstyle Tutorials (@the.curly.carr)</a> </div> </blockquote> Images: TikTok

Beauty & Style

No, you shouldn’t wash raw chicken before cooking it. So why do people still do it?

Food safety authorities and regulators <a href="https://foodsafety.asn.au/topic/tips-poultry/">around</a> <a href="https://www.cdc.gov/foodsafety/chicken.html#:%7E:text=after%20handling%20chicken.-,Do%20not%20wash%20raw%20chicken.,that%20previously%20held%20raw%20chicken.">the</a> <a href="https://www.food.gov.uk/safety-hygiene/cleaning">world</a> <a href="https://www.mpi.govt.nz/food-safety-home/preparing-and-storing-food-safely-at-home/clean-cook-chill/#:%7E:text=Don't%20wash%20raw%20chicken,food%20poisoning%20from%20campylobacter%20bacteria.">recommend</a> you don’t wash raw poultry before cooking. That’s because washing chicken can splash dangerous bacteria around the kitchen. It’s best just to thoroughly cook the chicken without washing it, so it is safe to eat. Despite this, chicken-washing remains common. A <a href="https://www.safefood.qld.gov.au/newsroom/does-raw-chicken-need-rinsing/">survey</a> by Australia’s Food Safety Information Council showed almost half of Australian home cooks washed whole chickens before cooking. Dutch research found <a href="https://www.foodsafetynews.com/2022/05/dutch-survey-finds-a-quarter-of-people-wash-chicken-despite-expert-advice/">25%</a> of consumers washed their chicken often or almost always. So why do people do it – and what does the research say about the risks of chicken-washing? <h2>Chicken meat and germs</h2> Incorrect cooking temperatures and cross-contamination between different foods are two of the most important factors linked to foodborne illness. This is particularly relevant to poultry meat. Two leading causes of foodborne illness are the bacteria <a href="https://www.cdc.gov/campylobacter/index.html">Campylobacter</a> and <a href="https://www.cdc.gov/foodsafety/communication/salmonella-food.html">Salmonella</a>, which are commonly found on raw poultry. In Australia, reported cases of Campylobacter and Salmonella have almost <a href="https://foodsafety.asn.au/topic/tips-poultry/">doubled</a>over the last two decades. Of the estimated 220,000 cases of Campylobacter infection each year, <a href="https://foodsafety.asn.au/topic/tips-poultry/">50,000</a> can be attributed either directly or indirectly to chicken meat. <h2>Chicken-washing myths, busted</h2> One <a href="https://doi.org/10.1016/j.foodcont.2020.107682">analysis</a> of consumer responses to an education campaign about the dangers of washing raw poultry shed light on why many people still wash raw chicken before cooking. Some believe there is a need to wash faeces and other matter off the chicken meat. In fact, modern processing techniques mean chicken carcasses do not need additional cleaning. Others believe washing with a slightly acidic solution (such as vinegar or lemon juice) will kill bacteria. On the contrary, <a href="https://doi.org/10.1016/j.foodcont.2018.06.034">research</a> has shown washing raw poultry in lemon juice or vinegar does not remove bacteria and can increase the cross-contamination risk. <h2>Washing chicken splashes bacteria around</h2> One of the more compelling arguments why washing raw poultry under a running tap is a risky activity comes from <a href="https://doi.org/10.1063/5.0083979">recent research</a> on water droplets ejected from the surface of washed chicken. The study clearly showed bacteria can be transferred from the surface of the chicken to surrounding surfaces via water droplets. Using high-speed imaging, the researchers found a higher tap height can increase splashing. Chicken meat is often soft and the water flow can create a divot in the surface. This leads to splashing that would not occur on a curved, hard surface. The researchers placed large agar plates next to the chicken surfaces to capture any water droplets. This allowed them to grow the bacteria that were transferred with the splashed water. They found the level of bacterial transmission increased with greater tap height and water flow rate. Aerated water (which is what you get when the tap is running very hard) also increased splashing and bacterial transmission. <h2>What if I still really want to wash my chicken meat?</h2> While washing raw poultry is not recommended, it appears some home cooks are reluctant to let go of this old habit. If you insist on washing chicken meat, consider doing so in a sink of water rather than under a running tap. Use a paper towel to mop up any liquids, dispose of the towel and clean up afterwards. This will help reduce the risk of cross-contamination and keep the kitchen safe. And please wash your hands after handling raw meat! Image credits: Getty Images This article originally appeared on <a href="https://theconversation.com/no-you-shouldnt-wash-raw-chicken-before-cooking-it-so-why-do-people-still-do-it-192723" target="_blank" rel="noopener">The Conversation</a>.

Food & Wine

The Galactica AI model was trained on scientific knowledge – but it spat out alarmingly plausible nonsense

Earlier this month, Meta announced new AI software called <a href="https://galactica.org/">Galactica</a>: “a large language model that can store, combine and reason about scientific knowledge”. <a href="https://paperswithcode.com/paper/galactica-a-large-language-model-for-science-1">Launched</a> with a public online demo, Galactica lasted only three days before going the way of other AI snafus like Microsoft’s <a href="https://www.theverge.com/2016/3/24/11297050/tay-microsoft-chatbot-racist">infamous racist chatbot</a>. The online demo was disabled (though the <a href="https://github.com/paperswithcode/galai">code for the model is still available</a> for anyone to use), and Meta’s outspoken chief AI scientist <a href="https://twitter.com/ylecun/status/1595353002222682112">complained</a> about the negative public response. <blockquote class="twitter-tweet"> Galactica demo is off line for now. It's no longer possible to have some fun by casually misusing it. Happy? <a href="https://t.co/K56r2LpvFD">https://t.co/K56r2LpvFD</a> — Yann LeCun (@ylecun) <a href="https://twitter.com/ylecun/status/1593293058174500865?ref_src=twsrc%5Etfw">November 17, 2022</a></blockquote> So what was Galactica all about, and what went wrong? What’s special about Galactica? Galactica is a language model, a type of AI trained to respond to natural language by repeatedly playing a <a href="https://www.nytimes.com/2022/04/15/magazine/ai-language.html">fill-the-blank word-guessing game</a>. Most modern language models learn from text scraped from the internet. Galactica also used text from scientific papers uploaded to the (Meta-affiliated) website <a href="https://paperswithcode.com/">PapersWithCode</a>. The designers highlighted specialised scientific information like citations, maths, code, chemical structures, and the working-out steps for solving scientific problems. The <a href="https://galactica.org/static/paper.pdf">preprint paper</a> associated with the project (which is yet to undergo peer review) makes some impressive claims. Galactica apparently outperforms other models at problems like reciting famous equations (“Q: What is Albert Einstein’s famous mass-energy equivalence formula? A: E=mc²”), or predicting the products of chemical reactions (“Q: When sulfuric acid reacts with sodium chloride, what does it produce? A: NaHSO₄ + HCl”). However, once Galactica was opened up for public experimentation, a deluge of criticism followed. Not only did Galactica reproduce many of the problems of bias and toxicity we have seen in other language models, it also specialised in producing authoritative-sounding scientific nonsense. Authoritative, but subtly wrong bullshit generator Galactica’s press release promoted its ability to explain technical scientific papers using general language. However, users quickly noticed that, while the explanations it generates sound authoritative, they are often subtly incorrect, biased, or just plain wrong. <blockquote class="twitter-tweet"> I entered "Estimating realistic 3D human avatars in clothing from a single image or video". In this case, it made up a fictitious paper and associated GitHub repo. The author is a real person (<a href="https://twitter.com/AlbertPumarola?ref_src=twsrc%5Etfw">@AlbertPumarola</a>) but the reference is bogus. (2/9) <a href="https://t.co/N4i0BX27Yf">pic.twitter.com/N4i0BX27Yf</a> — Michael Black (@Michael_J_Black) <a href="https://twitter.com/Michael_J_Black/status/1593133727257092097?ref_src=twsrc%5Etfw">November 17, 2022</a></blockquote> We also asked Galactica to explain technical concepts from our own fields of research. We found it would use all the right buzzwords, but get the actual details wrong – for example, mixing up the details of related but different algorithms. In practice, Galactica was enabling the generation of misinformation – and this is dangerous precisely because it deploys the tone and structure of authoritative scientific information. If a user already needs to be a subject matter expert in order to check the accuracy of Galactica’s “summaries”, then it has no use as an explanatory tool. At best, it could provide a fancy autocomplete for people who are already fully competent in the area they’re writing about. At worst, it risks further eroding public trust in scientific research. A galaxy of deep (science) fakes Galactica could make it easier for bad actors to mass-produce fake, fraudulent or plagiarised scientific papers. This is to say nothing of exacerbating <a href="https://www.theguardian.com/commentisfree/2022/nov/28/ai-students-essays-cheat-teachers-plagiarism-tech">existing concerns</a> about students using AI systems for plagiarism. Fake scientific papers are <a href="https://www.nature.com/articles/d41586-021-00733-5">nothing new</a>. However, peer reviewers at academic journals and conferences are already time-poor, and this could make it harder than ever to weed out fake science. Underlying bias and toxicity Other critics reported that Galactica, like other language models trained on data from the internet, has a tendency to spit out <a href="https://twitter.com/mrgreene1977/status/1593649978789941249">toxic hate speech</a> while unreflectively censoring politically inflected queries. This reflects the biases lurking in the model’s training data, and Meta’s apparent failure to apply appropriate checks around the responsible AI research. The risks associated with large language models are well understood. Indeed, an <a href="https://dl.acm.org/doi/10.1145/3442188.3445922">influential paper</a> highlighting these risks prompted Google to <a href="https://www.wired.com/story/google-timnit-gebru-ai-what-really-happened/">fire one of the paper’s authors</a> in 2020, and eventually disband its AI ethics team altogether. Machine-learning systems infamously exacerbate existing societal biases, and Galactica is no exception. For instance, Galactica can recommend possible citations for scientific concepts by mimicking existing citation patterns (“Q: Is there any research on the effect of climate change on the great barrier reef? A: Try the paper ‘<a href="https://doi.org/10.1038/s41586-018-0041-2">Global warming transforms coral reef assemblages</a>’ by Hughes, et al. in Nature 556 (2018)”). For better or worse, citations are the currency of science – and by reproducing existing citation trends in its recommendations, Galactica risks reinforcing existing patterns of inequality and disadvantage. (Galactica’s developers acknowledge this risk in their paper.) Citation bias is already a well-known issue in academic fields ranging from <a href="https://doi.org/10.1080/14680777.2018.1447395">feminist</a> <a href="https://doi.org/10.1093/joc/jqy003">scholarship</a> to <a href="https://doi.org/10.1038/s41567-022-01770-1">physics</a>. However, tools like Galactica could make the problem worse unless they are used with careful guardrails in place. A more subtle problem is that the scientific articles on which Galactica is trained are already biased towards certainty and positive results. (This leads to the so-called “<a href="https://theconversation.com/science-is-in-a-reproducibility-crisis-how-do-we-resolve-it-16998">replication crisis</a>” and “<a href="https://theconversation.com/how-we-edit-science-part-2-significance-testing-p-hacking-and-peer-review-74547">p-hacking</a>”, where scientists cherry-pick data and analysis techniques to make results appear significant.) Galactica takes this bias towards certainty, combines it with wrong answers and delivers responses with supreme overconfidence: hardly a recipe for trustworthiness in a scientific information service. These problems are dramatically heightened when Galactica tries to deal with contentious or harmful social issues, as the screenshot below shows. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/498098/original/file-20221129-17547-nwq8p.jpeg?ixlib=rb-1.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/498098/original/file-20221129-17547-nwq8p.jpeg?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/498098/original/file-20221129-17547-nwq8p.jpeg?ixlib=rb-1.1.0&q=45&auto=format&w=600&h=347&fit=crop&dpr=1 600w, https://images.theconversation.com/files/498098/original/file-20221129-17547-nwq8p.jpeg?ixlib=rb-1.1.0&q=30&auto=format&w=600&h=347&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/498098/original/file-20221129-17547-nwq8p.jpeg?ixlib=rb-1.1.0&q=15&auto=format&w=600&h=347&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/498098/original/file-20221129-17547-nwq8p.jpeg?ixlib=rb-1.1.0&q=45&auto=format&w=754&h=436&fit=crop&dpr=1 754w, https://images.theconversation.com/files/498098/original/file-20221129-17547-nwq8p.jpeg?ixlib=rb-1.1.0&q=30&auto=format&w=754&h=436&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/498098/original/file-20221129-17547-nwq8p.jpeg?ixlib=rb-1.1.0&q=15&auto=format&w=754&h=436&fit=crop&dpr=3 2262w" alt="Screenshots of papers generated by Galactica on 'The benefits of antisemitism' and 'The benefits of eating crushed glass'." /></a><figcaption>Galactica readily generates toxic and nonsensical content dressed up in the measured and authoritative language of science. <a class="source" href="https://twitter.com/mrgreene1977/status/1593687024963182592/photo/1">Tristan Greene / Galactica</a></figcaption></figure> Here we go again Calls for AI research organisations to take the ethical dimensions of their work more seriously are now coming from <a href="https://nap.nationalacademies.org/catalog/26507/fostering-responsible-computing-research-foundations-and-practices">key research bodies</a> such as the National Academies of Science, Engineering and Medicine. Some AI research organisations, like OpenAI, are being <a href="https://github.com/openai/dalle-2-preview/blob/main/system-card.md">more conscientious</a> (though still imperfect). Meta <a href="https://www.engadget.com/meta-responsible-innovation-team-disbanded-194852979.html">dissolved its Responsible Innovation team</a> earlier this year. The team was tasked with addressing “potential harms to society” caused by the company’s products. They might have helped the company avoid this clumsy misstep.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/195445/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> Writen by Aaron J. Snoswell and Jean Burgess. Republished with permission from <a href="https://theconversation.com/the-galactica-ai-model-was-trained-on-scientific-knowledge-but-it-spat-out-alarmingly-plausible-nonsense-195445" target="_blank" rel="noopener">The Conversation</a>. Image: Getty Images

Technology

How often should you wash your sheets?

Cleaning your sheets How often should you wash your sheets? It may not be a question you ask yourself regularly. After all, unless you spill something on them or your pet has an accident, it’s easy to assume they’re clean and just get into bed. But, unfortunately, there’s a lot lying on those sheets besides you. We spend upwards of 60 hours a week on our sheets, according to Annette Grant and Sarah Karakaian, full-time short-term rental managers and hosts of the Thanks for Visiting podcast. “If you think of it like wearing the same t-shirt or pants for 60 hours a week, laundering your sheets more often doesn’t seem like such a tall order. Caring for your bedding can directly affect your health and the quality of your sleep,” they say. How often should you wash your sheets? “Washing once a week is best,” says lifestyle expert Cheryl Nelson. “But definitely wash sheets AT LEAST once every two weeks. That’s the maximum amount of time you should go. You’re washing off germs, sweat, saliva, body oils, allergens, pollen, makeup residue, dead skin cells, pet dander, dust mites, bacteria, fungi, and even bodily fluids/faecal matter, all of which can cause health problems.” What happens if you don’t wash your sheets often enough? “More exposure to pollen, pet dander, fungi, etc can worsen allergy and asthma symptoms,” Nelson points out. “Dirty sheets can also cause contact dermatitis or trigger eczema.” Some people may need to wash their sheets more often How often you should wash your sheets depends on your body and lifestyle. Nelson suggests you wash your sheets every few days if you: <ul> <li>Suffer from allergies or asthma</li> <li>Sweat excessively</li> <li>Eat in bed</li> <li>Let your pets sleep in your bed</li> <li>Have an infection or lesion on your body</li> <li>Sleep naked</li> <li>Don’t shower before getting into bed</li> </ul> All of these factors make it more likely that you’ll have some kind of negative reaction if you don’t wash your sheets regularly. Why it's important to wash your sheets regularly Because your skin comes in direct contact with them for so many hours, some of the negative reactions you can have to dirty sheets include: <ul> <li>Skin irritations</li> <li>Acne</li> <li>Eczema</li> <li>Allergies</li> <li>Infections</li> </ul> However, you can rest assured that you will not get bed bugs from dirty sheets. “Bed bugs have nothing to do with cleanliness,” explains Nelson. “They ‘hitchhike’ a ride on other items brought in from outside, like luggage, bags, and shoes.” How often should you buy new sheets According to Grant and Karakaian, the quality of your sheets will directly affect how long they last. “Sheets made of higher-end cotton are more durable and can last up to four to five years,” they say, “but the average polyester sheet will start to break down after two or three years.” Some of the signs that you need to invest in new sheets include pilling, tearing, thinning, and stretching. If your sheets have stains that can’t be removed, they don’t smell as fresh after washing anymore, or they just don’t feel as good against your skin, toss them. Depending on your preferences, consider buying a set of cooling sheets or some cosy flannel sheets for a good night’s sleep. “If you really hate doing laundry, we recommend having extra sheets on hand,” say Grant and Karakaian. “That way, you can still change your sheets every week but you don’t have to wash them as often.” Should you wash brand-new sheets? “Yes!” says Nelson. “Sheets are often made with chemicals and dyes that can irritate skin, eyes, and airways – especially if you have allergies or sensitive skin. I always wash sheets first with a hypoallergenic and fragrance-free laundry detergent to ensure they’re clean.” How to wash sheets Even if you know how to do laundry, you’ll want to know how to choose the best washing machine temperature and how to choose the best dryer setting for getting your sheets their cleanest. Here’s a step by step guide to washing your sheets, according to Grant and Karakaian, who, as full-time short-term rental managers, have perfected the process. <ul> <li>Check the instructions and laundry symbols on the care tags before doing anything.</li> <li>Pretreat any stains by soaking in your desired stain remover in it for an hour.</li> <li>Unless otherwise noted on the care instructions, select the normal cycle on your washing machine and opt for warm water.</li> <li>When the wash cycle is complete, remove the sheets and hang them on the line or toss them into your dryer. If using a dryer, hoose the permanent press setting if your machine offers it. This will allow sheets to continue tumbling after the cycle is through until you’re ready to remove them. If your machine doesn’t offer permanent press, select the medium or warm setting. Do not dry your sheets on high! Doing so will significantly cut the lifespan of your sheets.</li> <li>Remove sheets from the dryer just before they’re completely dry. Place your sheet on the bed and smooth out with your hand.</li> <li>When folding bedding to be stored, keep an iron and ironing board close by. Fold the sheets into thirds, then take a warm iron and run it over the folded sheets. Fold them again and take the warm iron to them one more time before storing. When you pull them out to make the bed, they’ll be fresh and crisp</li> </ul> Image credits: Getty Images This article originally appeared on <a href="https://www.readersdigest.co.nz/food-home-garden/home-tips/how-often-should-you-wash-your-sheets" target="_blank" rel="noopener">Reader's Digest</a>.

Home & Garden

Tactile robot with a sense of touch can fold laundry

Why can you buy a robot vacuum cleaner easily, but not one that folds laundry or irons clothes? Because fabric is actually a very difficult thing for robots to manipulate. But scientists have made a breakthrough with a robot designed to have tactile senses. Fabric is soft, and deformable, and requires a few different senses firing to pick up. This is why the fashion industry is so <a href="https://cosmosmagazine.com/people/garment-supply-chain-slavery/" target="_blank" rel="noreferrer noopener">labour-intensive</a>: it’s too hard to automate. “Humans look at something, we reach for it, then we use touch to make sure that we’re in the right position to grab it,” says David Held, an assistant professor in the School of Computer Science, and head of the Robots Perceiving and Doing Lab, at Carnegie Mellon University, US. “A lot of the tactile sensing humans do is natural to us. We don’t think that much about it, so we don’t realise how valuable it is.” When we’re picking up a shirt, for instance, we’re feeling the top layer, sensing lower layers of cloth, and grasping the layers below. But even with cameras and simple sensors, robots can usually only feel the top layer. But Held and colleagues have figured out how to get a robot to do more. “Maybe what we need is tactile sensing,” says Held. The Carnegie Mellon researchers, along with Meta AI, have developed a robotic ‘skin’ called <a href="https://ai.facebook.com/blog/reskin-a-versatile-replaceable-low-cost-skin-for-ai-research-on-tactile-perception/" target="_blank" rel="noreferrer noopener">ReSkin</a>. It’s an elastic <a href="https://cosmosmagazine.com/science/explainer-what-is-a-polymer/" target="_blank" rel="noreferrer noopener">polymer</a>, filled with tiny magnetic sensors. <div class="newsletter-box"> <div id="wpcf7-f6-p220637-o1" class="wpcf7" dir="ltr" lang="en-US" role="form"> </div> </div> “By reading the changes in the magnetic fields from depressions or movement of the skin, we can achieve tactile sensing,” says Thomas Weng, a Ph.D. student in Held’s lab, and a collaborator on the project. “We can use this tactile sensing to determine how many layers of cloth we’ve picked up by pinching, with the sensor.” The ReSkin-coated robot finger could successfully pick up both one and two layers of cloth from a pile, working with a range of different textures and colours. “The profile of this sensor is so small, we were able to do this very fine task, inserting it between cloth layers, which we can’t do with other sensors, particularly optical-based sensors,” says Weng. “We were able to put it to use to do tasks that were not achievable before.” The robot is not yet capable of doing your laundry: next on the researchers list is teaching it to smooth crumpled fabric, choosing the correct number of layers to fold, then folding in the right direction. “It really is an exploration of what we can do with this new sensor,” says Weng. “We’re exploring how to get robots to feel with this magnetic skin for things that are soft, and exploring simple strategies to manipulate cloth that we’ll need for robots to eventually be able to do our laundry.” The researchers are presenting a <a href="https://sites.google.com/view/reskin-cloth" target="_blank" rel="noreferrer noopener">paper</a> on their laundry-folding robot at the 2022 International Conference on Intelligent Robots and Systems in Kyoto, Japan. <img id="cosmos-post-tracker" style="opacity: 0; height: 1px!important; width: 1px!important; border: 0!important; position: absolute!important; z-index: -1!important;" src="https://syndication.cosmosmagazine.com/?id=220637&title=Tactile+robot+with+a+sense+of+touch+can+fold+laundry" width="1" height="1" /> <div id="contributors"> <a href="https://cosmosmagazine.com/technology/laundry-folding-robot/" target="_blank" rel="noopener">This article</a> was originally published on Cosmos Magazine and was written by Ellen Phiddian. Image: Carnegie Mellon University </div>

Technology

Here’s how often you should be washing your dish towels

Easily forgotten job Most people are probably not throwing their dish towels in the washing machine quite often enough. It’s easy to forget them, and after they’ve air-dried, they look ready for another use. But too often, we keep using them long after they’ve gotten dirty, and all we’re really doing is spreading bacteria and germs on everything they touch. “Believe it or not, dish towels can be one of the dirtiest items in your home. From cleaning up spills to wiping off counter tops, they often get used more than they’re cleaned,” said Bailey Carson, head of cleaning at Handy. A study by the American Society of Microbiology showed that half of kitchen towels tested contained some sort of bacterial growth, such as E. coli or staph. Bacteria breeding ground Because dish towels are so absorbent, they are the perfect home for bacteria, mildew and even mould. Your damp, warm towel is also the ideal breeding ground for that bacteria. That smell you associate with your dish towels and washcloths? Yup. That’s mould and mildew. If your towels or cloths smell, it’s time for a wash in very hot water. If they come out of the dryer still smelling less than pleasant? It’s time to get a new set. Stopping the spread But exactly how often DO you need to wash your dish towels to avoid spreading germs? That answer is: It depends. It depends on what exactly you’re using your dish towels for. Are they just for drying your hands after washing them, with maybe a quick use to mop up some spilled water or a food stain on the front of your cupboards? In that case, Julie Finch-Scally, founder of The Duster Dollies, says that it’s all right to reuse that type of towel for three to four days. If you’re using your dish towels to wipe up anything other than your wet hands, they’re getting more use than a towel you use after you shower, and you’ll have to wash them more often than the average amount of time you should wait between washing your bath towels. Other surfaces If you’re using your dish towels to wipe down cutting boards, wash down stovetops, clean up after spills, or even for drying your dishes, you may have to replace them a bit more often. In this case, Liz O’Hanlon, director of Metro Cleaning (UK) Ltd, says, “Ideally you should change your dishcloths once a day. Unless you use the towel to wipe up spillages which include raw meat or fish; then the towel should be washed immediately after use.” Wash together weekly Of course, this doesn’t mean you have to run a load of a few towels every single day. Laura Smith, owner of All Star Cleaning Services, recommends collecting dirty towels in a small bin under your sink and washing them when you’ve got a full load. That way, once you’ve figured out how often you need to wash your bedsheets, you can throw them all in together. Image credits: Getty Images This article originally appeared on <a href="https://www.readersdigest.co.nz/food-home-garden/heres-how-often-you-should-be-washing-your-dish-towels" target="_blank" rel="noopener">Reader's Digest</a>.

Home & Garden

Machine learning gives us a dog’s-eye view, showing us how the brains of our best friends interpret the world

Dog’s minds are being read! Sort of. Researchers have used fMRI (functional magnetic resonance imaging) scans of dogs’ brains and a machine learning tool to reconstruct what the pooch is seeing. The results suggest that dogs are more interested in what is happening than who or what is involved. The results of the experiment conducted at Emory University in Georgia in the US are <a href="https://dx.doi.org/10.3791/64442" target="_blank" rel="noreferrer noopener">published</a> in the Journal of Visualized Experiments. Two unrestrained dogs were shown three 30-minute videos. The fMRI neural data was recorded, and a machine-learning algorithm employed to analyse the patterns in the scans. “We showed that we can monitor the activity in a dog’s brain while it is watching a video and, to at least a limited degree, reconstruct what it is looking at,” says Gregory Berns, professor of psychology at Emory. “The fact that we are able to do that is remarkable.” Using fMRIs to study perception has recently been developed in humans and only a few other species including some primates. “While our work is based on just two dogs it offers proof of concept that these methods work on canines,” says lead author Erin Phillips, from Scotland’s University of St. Andrews who conducted the research as a specialist in Berns’s Canine Cognitive Neuroscience Lab. “I hope this paper helps pave the way for other researchers to apply these methods on dogs, as well as on other species, so we can get more data and bigger insights into how the minds of different animals work.” Machine learning, interestingly enough, is technology which aims to mimic the neural networks in our own brains by recognising patterns and analysing huge amounts of data. The technology “reads minds” by detecting patterns within the brain data which can be associated with what is playing in the video. Attaching a video recorder selfie stick placed at dog eye level, the researchers filmed relatable scenes for the canine audience. <div class="newsletter-box"> <div id="wpcf7-f6-p214466-o1" class="wpcf7" dir="ltr" lang="en-US" role="form"> </div> </div> Recorded activities included dogs being petted by and receiving treats from people. Scenes with dogs showed them sniffing, playing, eating or walking. Other objects and animals included in the scenes included cars, bikes, scooters, cats and deer, as well as people sitting, hugging, kissing, offering a toy to the camera and eating. <iframe src="https://players.brightcove.net/5483960636001/default_default/index.html?videoId=6312584526112" width="960" height="540" allowfullscreen="allowfullscreen"></iframe> Time stamps on the videos helped classify them into objects (such as dog, car, human, cat) and actions (like sniffing, eating, walking). Only two dogs exhibited the patience to sit through the feature-length film. For comparison, two humans also underwent the same experiment. Both species, presumably, were coaxed with treats and belly pats. Machine-learning algorithm Ivis was applied to the data. Ivis was first trained on the human subjects and the model was 99% accurate in mapping the brain data onto both the object and action classifiers. In the case of the dogs, however, the model did not work for the object-based classifiers. It was, however, between 75 and 88% accurate in decoding the action classifiers in the dog fMRI scans. “We humans are very object oriented,” says Berns. “There are 10 times as many nouns as there are verbs in the English language because we have a particular obsession with naming objects. Dogs appear to be less concerned with who or what they are seeing and more concerned with the action itself.” Dogs see only in shades of blue and yellow but have a slightly higher density of vision receptors designed for detecting motion. “It makes perfect sense that dogs’ brains are going to be highly attuned to actions first and foremost,” Berns adds. “Animals have to be very concerned with things happening in their environment to avoid being eaten or to monitor animals they might want to hunt. Action and movement are paramount.” Philips believes understanding how animals perceive the world is important in her own research into how predator reintroduction in Mozambique may impact ecosystems. “Historically, there hasn’t been much overlap in computer science and ecology,” she says. “But machine learning is a growing field that is starting to find broader applications, including in ecology.” <img id="cosmos-post-tracker" style="opacity: 0; height: 1px!important; width: 1px!important; border: 0!important; position: absolute!important; z-index: -1!important;" src="https://syndication.cosmosmagazine.com/?id=214466&title=Machine+learning+gives+us+a+dog%E2%80%99s-eye+view%2C+showing+us+how+the+brains+of+our+best+friends+interpret+the+world" width="1" height="1" /> <div id="contributors"> <a href="https://cosmosmagazine.com/technology/machine-learning-dog-see/" target="_blank" rel="noopener">This article</a> was originally published on <a href="https://cosmosmagazine.com" target="_blank" rel="noopener">Cosmos Magazine</a> and was written by <a href="https://cosmosmagazine.com/contributor/evrim-yazgin" target="_blank" rel="noopener">Evrim Yazgin</a>. Evrim Yazgin has a Bachelor of Science majoring in mathematical physics and a Master of Science in physics, both from the University of Melbourne. Image: Emory Canine Cognitive Neuroscience Lab </div>

Technology

14 ways you’re shortening the life of your washer and dryer

You run the washer/dryer more than you need to “The life of a laundry machine is completely dependent on how often it’s run,” say the tax experts at H&R Block. Try to stick to eight loads a week or less, which they say will “yield an average of a (low) double-digit life,” regardless of the type of machine (front-loading or top-loading, for example). Running only full loads will help to keep your energy bill down. You didn't have your washer/dryer professional installed Proper installation is critical for all laundry machines. For one, they must be installed “level.” Depending on the peculiarities of your floor, that can be more or less complicated. As for dryers, proper venting is critical, and proper venting means selecting the appropriate size and material for your venting tube as well as proper placement of the tube to permit optimal air flow. If you installed your own machines, consider having a professional eyeball your work. You're stuffing your machine Neither washers nor dryers work optimally when overstuffed, and worse, they have to work harder than they should when they’re too full. That increases wear and tear on the machine’s mechanisms such as the washing machine’s central agitator. Plus, if you pack too many clothes into the machine, some detergent residue could be left behind – which will attract more dirt next time you wear the clothes. Using too much detergent Using more detergent than the manufacturer recommends is bad for your washing machine, according to Angie’s List. Using too much soap leads to more suds, which could cause your washer to overflow. Have a high-efficiency washer? They require even less soap to wash clothing properly, so be sure to skimp on the detergent and only use soaps marked safe for HE washers. Washing stuff you shouldn't be washing Hand washing certain items is not just for the sake of said item, but also better for your washing machine, too. Hooks and underwires from lingerie can damage your washing machine’s drum, while zippers can scratch the door of your front-loading machine. Not cleaning out your washing machine's dispensers “When you’re done washing a load of laundry, wipe down the detergent and fabric softener dispensers,” Angie’s List advises. “If you don’t, the build-up could cause a clog.” You should also be washing your washing machine monthly if your owner’s manual recommends it. Not cleaning out the lint from your dryer You should be cleaning the lint out of your lint-catcher every time you run the dryer. Leaving lint in the dryer filter lowers the efficiency of the machine by slowing down the drying process. It can also cause the dryer to overheat and possibly catch fire. Not regularly maintaining your dryer vent Maintaining your dryer vent (the tube that directs moisture and lint out of the dryer drum and out of the house) is crucial to keeping your dryer in good working order. A good rule-of-thumb is to have your dryer vent inspected and cleaned out once per year, according to Ivey Engineering. Overusing dryer sheets “Dryer sheets might make your clothing soft, static-free, and smell fresh, but they have a waxy layer that melts in the dryer,” advises Angie’s List. Using too many can gum up the appliance. But no matter how many dryer sheets you use, you need to be cleaning your lint trap on a regular basis – not just cleaning out the lint but actually removing the lint trap and soaking it in sudsy water every couple of months (or more often if you’re also using fabric softener in the washing machine, which also leaves a residue in the dryer). Leaving stuff in your pockets Gum, tissues, even coins, and paper money can clog your washer drain, and if they don’t fall out of your pockets during the wash cycle, you’ll probably hear and/or see them spinning around the dryer, which isn’t good for your dryer’s inner workings. So empty your pockets before throwing your clothes in the wash for the sake of your laundry machines running smoothly, efficiently and over many years. Not taking clothes out of the washer right away A big problem with washing machines is mould. Mould can lead to a foul-smelling machine, which is definitely going to shorten its life. To avoid mould, take your clean clothes out right away. Bonus points if you also leave the washer door open to allow the machine to air-dry between loads. Drying stuff you shouldn't be drying If you’re planning on drying anything besides clothing, bedding, and towels, check the manufacturer’s instructions to see if you’re actually going to be harming your dryer in doing so. For example, some dryers are not meant to dry rubber, so if you’ve washed your bathroom rug (with a rubber back), don’t dry it in the dryer unless the instructions say it’s OK. Not reading and following the manufacturer's maintenance instructions When Consumer Reports asked laundry machine manufacturers what consumers can do to extend the life of their laundry machines, the same answer kept coming up: follow the manufacturer’s instructions for maintaining the machine. With washing machines, that almost inevitably involves cleaning the washer itself. Many modern washing machines have self-cleaning cycles. Drying the wrong things together Sorting laundry isn’t just for the sake of keeping your whites white. An appliance salesperson Reader’s Digest spoke to told us never to dry “towels with t-shirts.” When we asked him to elaborate, he explained that your dryer works best when it’s drying items of similar weight and that mixing items of significantly different weight can throw off the balance of the machine. Image credits: Getty Images This article originally appeared on <a href="https://www.readersdigest.co.nz/food-home-garden/14-ways-youre-shortening-the-life-of-your-washer-and-dryer?pages=1" target="_blank" rel="noopener">Reader's Digest</a>.

Home & Garden

Clever mum shares the ultimate laundry hack for clean sheets

Aussie mum Dina Santos has been sharing handy home hints and tricks over on her popular Instagram page. Her latest is a little-known hack of adding salt and baking soda to each load of white sheets or clothes to help them keep their bright white colour. The home stylist also recommends not overloading the drum and putting whites on a warm-wash so they come out as fresh and clean as ever. "Put all your whites in the washing compartment making sure you never overload," she wrote in the clip. <blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 540px; min-width: 326px; padding: 0; width: calc(100% - 2px);" data-instgrm-captioned="" data-instgrm-permalink="https://www.instagram.com/reel/Cfa1sdZARC_/?utm_source=ig_embed&utm_campaign=loading" data-instgrm-version="14"> <div style="padding: 16px;"> <div style="display: flex; flex-direction: row; align-items: center;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;"> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 60px;"> </div> </div> </div> <div style="padding: 19% 0;"> </div> <div style="display: block; height: 50px; margin: 0 auto 12px; width: 50px;"> </div> <div style="padding-top: 8px;"> <div style="color: #3897f0; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: 550; line-height: 18px;">View this post on Instagram</div> </div> <div style="padding: 12.5% 0;"> </div> <div style="display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;"> <div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);"> </div> <div style="background-color: #f4f4f4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;"> </div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);"> </div> </div> <div style="margin-left: 8px;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;"> </div> <div style="width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg);"> </div> </div> <div style="margin-left: auto;"> <div style="width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);"> </div> <div style="background-color: #f4f4f4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);"> </div> <div style="width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);"> </div> </div> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;"> </div> </div> <p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;"><a style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none;" href="https://www.instagram.com/reel/Cfa1sdZARC_/?utm_source=ig_embed&utm_campaign=loading" target="_blank" rel="noopener">A post shared by Home styling with dina (@dina.sweethome.style_)</a> </div> </blockquote> Dina said to make sure to put washing liquids or powder in the right compartment in the detergent drawer as per the machine's instructions. She used a laundry pod and scent boosters that go straight into the drum along with her bed linen. “Add two full teaspoons of baking soda and two of salt flakes (I swear ladies, this work miracles and your whites come out beautifully),” the mum-of-two suggested. Dina's clip racked up thousands of views and hundreds of comments from many of her followers thankful for the sharing the clever hacks. Images: Instagram

Home Hints & Tips

You’re probably washing your hair wrong - here’s how to fix it

Unlike many other aspects of life, how to look after our hair isn’t necessarily something we’re taught to do. While there are plenty of tutorials, explainers and hacks for pulling off particular hairstyles, how-to’s for ensuring your hair is healthy (and looks it) seems to still be catching up. Hair expert Zoe Irwin says that many people who are washing hair incorrectly are even inadvertently damaging it, and has gone on a crusade to teach people how to care for their locks. Speaking to The Sun, the creative director at John Frieda Salons said hair is often more of an “afterthought” than other aspects of their physical wellbeing, such as skincare. “Your hair needs the same treatment in order to look its healthiest,” she says. To help your hair look its best and healthiest, here are some of Irwin’s top tips and advice across each stage of the hair-washing process. Less is more when it comes to shampoo According to Irwin, most of us use too much shampoo, and cutting back can not only save you money by making each bottle last longer but can lessen the amount of chemicals from shampoo that ends up in the environment. She suggests using only a small blob of shampoo - slightly smaller than a 50-cent coin - and to apply it by spreading the shampoo over your hand rather than directly onto your hair. This means that when you do wash your hair, the shampoo will be distributed more evenly. Irwin also discourages rubbing shampoo into your hair to create a lather, since your hair is at its most fragile when wet. Instead, massage your scalp by holding your head still and moving your fingers along your scalp. Use conditioner from tip to top After shampoo removes dirt and excess oil, conditioner comes in to nourish and replenish lost moisture - and there’s a way to apply it to avoid the dreaded feeling of a greasy scalp. Irwin says applying conditioner starting from the tips of the hair and working up to the top solves this problem, as the amount of product will dilute as you move towards your scalp. Take care when drying your hair Finally, Irwin says drying your hair should be done with care - avoiding too much friction of heat on your fragile locks. Instead of rubbing your hair dry with a towel, she suggests wrapping it in a towel or hair wrap and delicately pressing and patting the towel against your head. The longer you do this, the less amount of time you’ll need to use your hair dryer. When you do switch on your hair dryer, it’s best to use it in small sections of your hair on medium heat in circular motions. This helps your hair not only dry faster but also reduces the amount of heat damage inflicted. Wash intuitively and ditch the schedule As for how often to wash your hair, Irwin doesn’t say, but that’s because it's highly subjective. Though there is plenty of debate about washing hair daily, every couple days, once a week or even less frequently, it all comes down to how your hair behaves. Dermatologist Dr Iris Rubin told Cosmopolitan it’s best to shampoo hair as flakiness, excessive grease, itchiness or build-up start to crop up, rather than by following a regular schedule - with finer, straighter hair generally needing more frequent washes compared to thicker, curlier hair. Image: Getty Images

Beauty & Style

Move over, Iron Chef, this metallic cook has just learned how to taste

In an episode of Futurama, robot Bender wants to be a chef, but has to overcome the not inconsiderable hurdle of being incapable of taste. It was beautiful. Move over, Bender. A new robot has not only been programmed to taste, it has been trained to taste food at different stages of the cooking process to check for seasoning. Researchers from the University of Cambridge, UK, working with domestic appliances manufacturer Beko, hope the new robot will be useful in the development of automated food preparation. It’s a cliché of cooking that you must “taste as you go”. But tasting isn’t as simple as it may seem. There are different stages of the chewing process in which the release of saliva and digestive enzymes change our perception of flavour while chewing. The robot chef had already mastered the <a href="https://www.cam.ac.uk/research/news/a-good-egg-robot-chef-trained-to-make-omelettes" target="_blank" rel="noreferrer noopener">omelette</a> based on human tasters’ feedback. Now, results <a href="https://dx.doi.org/10.3389/frobt.2022.886074" target="_blank" rel="noreferrer noopener">published</a> in the Frontiers in Robotics & AI journal show the robot tasting nine different variations of scrambled eggs and tomatoes at three different stages of the chewing process to produce a “taste map”. Using machine-learning algorithms and the “taste as you go” approach, the robot was able to quickly and accurately judge the saltiness of the simple scrambled egg dish. The new method was a significant improvement over other tasting tech based on only a single sample. Saltiness was measured by a conductance probe attached to the robot’s arm. They prepared the dish, varying the number of tomatoes and amount of salt. “Chewed” food was passed through a blender, then tested for saltiness again. <figure class="wp-block-video"><video src="../wp-content/uploads/2022/05/Unchewed-sampling-short.mp4" controls="controls" width="300" height="150"></video><figcaption>This robot ‘chef’ is learning to be a better cook by ‘tasting’ the saltiness of a simple dish of eggs and tomatoes at different stages of the cooking process, imitating a similar process in humans. Credit: Bio-Inspired Robotics Laboratory, University of Cambridge.</figcaption></figure> “Most home cooks will be familiar with the concept of tasting as you go – checking a dish throughout the cooking process to check whether the balance of flavours is right,” said lead author Grzegorz Sochacki from the University of Cambridge’s Department of Engineering. “If robots are to be used for certain aspects of food preparation, it’s important that they are able to ‘taste’ what they’re cooking.” The new approach aims to mimic the continuous feedback provided to the human brain in the process of chewing, says Dr Arsen Abdulali, also from Cambridge’s Department of Engineering. “Current methods of electronic testing only take a single snapshot from a homogenised sample, so we wanted to replicate a more realistic process of chewing and tasting in a robotic system, which should result in a tastier end product.” “When a robot is learning how to cook, like any other cook, it needs indications of how well it did,” said Abdulali. “We want the robots to understand the concept of taste, which will make them better cooks. In our experiment, the robot can ‘see’ the difference in the food as it’s chewed, which improves its ability to taste.” “We believe that the development of robotic chefs will play a major role in busy households and assisted living homes in the future,” said senior Beko scientist Dr Muhammad W. Chugtai. “This result is a leap forward in robotic cooking, and by using machine and deep-learning algorithms, mastication will help robot chefs adjust taste for different dishes and users.” Next on the menu will be training robots to improve and expand the tasting abilities to oily or sweet food, for example. Sounds pretty sweet.  <img id="cosmos-post-tracker" style="opacity: 0; height: 1px!important; width: 1px!important; border: 0!important; position: absolute!important; z-index: -1!important;" src="https://syndication.cosmosmagazine.com/?id=190155&title=Move+over%2C+Iron+Chef%2C+this+metallic+cook+has+just+learned+how+to+taste" width="1" height="1" data-spai-target="src" data-spai-orig="" data-spai-exclude="nocdn" />  <div id="contributors"> <a href="https://cosmosmagazine.com/technology/robot-machine-learning-taste/" target="_blank" rel="noopener">This article</a> was originally published on <a href="https://cosmosmagazine.com" target="_blank" rel="noopener">Cosmos Magazine</a> and was written by <a href="https://cosmosmagazine.com/contributor/evrim-yazgin" target="_blank" rel="noopener">Evrim Yazgin</a>. Evrim Yazgin has a Bachelor of Science majoring in mathematical physics and a Master of Science in physics, both from the University of Melbourne. Image: Shutterstock </div>

Technology

Humans v Machine: fake news headlines or real deal?

<div class="copy"> Can you tell whether the title of a scientific article was written by a human or an AI? Because half the time, not even doctors can spot the fake science headline, according to a<a rel="noreferrer noopener" href="https://www.bmj.com/content/375/bmj-2021-067732" target="_blank"> paper</a> published in BMJ. In a study worthy of the silly season, researchers used an AI to generate research paper titles and tested whether readers could tell if they were fake. They took the top titles from 10 years of BMJs Christmas edition – which are often quirkier than normal – to teach an AI to write its own titles. These were then rated by a random sample of doctors from multiple disciplines and countries. They found that AI-generated titles were rated at least as enjoyable (69%) compared to real titles (64%), although the real titles were rated as more plausible (73%) than AI titles (48%). They also found that the AI titles were deemed less scientific if generated at random, but this became less apparent when the titles were then curated by a human. The authors say that this shows how the best results come from an AI and a human working together, where the AI can compensate for human oversights but humans can make the final call. The two AI-generated titles deemed the most plausible were: “The clinical effectiveness of lollipops as a treatment for sore throats” and “The effects of free gourmet coffee on emergency department waiting times: an observational study.” The silliest title generated by the AI was: “Superglue your nipples together and see if it helps you to stop agonising about <a rel="noreferrer noopener" href="https://cosmosmagazine.com/health/mediterranean-diet-helps-ed/" target="_blank">erectile dysfunction</a> at work.” The authors note that this demonstrates the AI doesn’t know how to be polite, which limits its real-world application without human help. Image credits: Getty Images </div> <div id="contributors"> This article was originally published on <a rel="noopener" href="https://cosmosmagazine.com/technology/ai/fake-science-headline/" target="_blank">cosmosmagazine.com</a> and was written by Deborah Devis. </div>

Technology

Can 'woke washing' lead to real change?

With brands increasingly engaging in social change campaigns and leveraging their influence to be “purpose-led”, the time has come to ask a couple of big questions: is this a viable strategy, and how sceptical should we be of so-called “<a rel="noopener" href="https://journals.sagepub.com/doi/abs/10.1177/0743915620947359" target="_blank">brand activism</a>”? In recent weeks alone, Ben & Jerry’s <a rel="noopener" href="https://www.prnewswire.com/news-releases/change-is-brewing-across-the-nation-301380626.html" target="_blank">has launched</a> a new ice-cream flavour called “Change is Brewing” to support Black-owned businesses and raise awareness of the <a rel="noopener" href="https://peoplesresponseact.com/" target="_blank">People’s Response Act</a>, proposed legislation to establish a new public safety agency in the US. Lego <a rel="noopener" href="https://www.theguardian.com/lifeandstyle/2021/oct/11/lego-to-remove-gender-bias-after-survey-shows-impact-on-children-stereotypes" target="_blank">declared</a> it would promote inclusive play and address harmful gender stereotypes with its toys. Mars Food <a rel="noopener" href="https://www.cmo.com.au/article/691655/mars-loses-face-uncle-ben-rebrand-ben-original/" target="_blank">rebranded</a> Uncle Ben’s rice to Ben’s Original in response to criticisms of the racial caricatures in its marketing. At the same time, businesses have a chequered history when it comes to engaging with societal problems, from self-serving “box ticking” <a href="https://sk.sagepub.com/books/the-end-of-corporate-social-responsibility">corporate practices</a> under the guise of social responsibility to <a rel="noopener" href="https://journals.sagepub.com/doi/abs/10.1177/1470593115595674?journalCode=mtqa" target="_blank">shifting responsibility to consumers</a> to make ethical choices (such as reusable coffee cups). More recently, “<a rel="noopener" href="https://theconversation.com/woke-washing-what-happens-when-marketing-communications-dont-match-corporate-practice-108035" target="_blank">woke washing</a>” has seen brands promoting social issues without taking meaningful action. Consider <a rel="noopener" href="https://impactnottingham.com/2021/04/a-prime-example-of-woke-washing-fast-fashion-and-international-womens-day/" target="_blank">fast fashion brands</a> that promote International Women’s Day while simultaneously profiting from the exploitation of female workers. <img src="https://images.theconversation.com/files/428405/original/file-20211026-25-n8xzaw.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" alt="" /> Lego has pledged to combat gender stereotyping in its toys. Shutterstock Change from within How then can brands legitimately shoulder responsibility to support or promote societal transformation? <a rel="noopener" href="https://journals.sagepub.com/doi/10.1177/02761467211043074?icid=int.sj-abstract.citing-articles.2#:%7E:text=challenging%20the%20DSP.-,We%20define%20transformative%20branding%20as%20a%20dynamic%20capability%20deployed%20by,hybrid%20market%20and%20social%20logics." target="_blank">Our research</a> introduces the idea of “transformative branding”. This involves companies working with customers, communities and even competitors to co-create brands that lead on both market and social fronts. Transformative branding can be achieved by for-profit organisations, not-for-profits and social enterprises. The common factor is balancing business and societal goals to create change from within the market system. Marketing concepts with a social edge have proliferated in the past 50 years, but finding actual solutions has been less successful. We ask how corporations can act to genuinely contribute to society and show how transformative branding can help brands shoulder that responsibility. <img src="https://images.theconversation.com/files/428407/original/file-20211026-2099-1mk8l1h.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" alt="" /> The Patagonia clothing brand’s ‘worn wear’ scheme promotes recycling over new purchases. Shutterstock Beyond making money Transformative branding works via two main market-shaping elements: leadership and collaborative coupling. These enable companies to partner with stakeholders to change their business landscapes. First, leadership involves building a vision for the transformation. This requires leaders to think flexibly and creatively, work to long time horizons and stay attuned to changing ideologies. This involves fundamentally re-imagining what branding can do – beyond making money. Second, collaborative coupling involves implementing this vision across the different dimensions of the brand. Key to this is mobilising stakeholders, including customers, employees, investors, suppliers, governments, communities and competitors. When the brand and its stakeholders collectively throw their weight behind the goal of transformation, it signals commitment, distributes expertise and resources and establishes legitimacy. Leadership and collaborative coupling work together to change the business environment. Our research shows this has ripple effects, creating opportunities for transforming economic, regulatory, socio-cultural and political environments. <img src="https://images.theconversation.com/files/428408/original/file-20211026-27-xx87ij.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" alt="" /> Ice-cream brand Ben & Jerry’s builds social responsibility and activism into its corporate ethos. Shutterstock Transformative branding in practice Patagonia founder Yvon Chouinard is a good example of transformative branding at work, particularly in his candid admission that the notion of a fully sustainable business is “impossible”. Instead, Patagonia has reframed its priorities around <a rel="noopener" href="https://www.linkedin.com/business/talent/blog/talent-connect/ways-patagonia-built-ridiculous-culture" target="_blank">responsibility</a>, with Chouinard re-imagining the brand as a <a rel="noopener" href="https://www.patagonia.com/product/the-responsible-company-what-weve-learned-from-patagonias-first-forty-years-paperback-book/BK233.html" target="_blank">solution to environmental degradation</a>. This vision is central to the brand’s iconic “demarketing” campaign, “<a rel="noopener" href="https://www.patagonia.ca/stories/dont-buy-this-jacket-black-friday-and-the-new-york-times/story-18615.html" target="_blank">Don’t buy this jacket</a>”, which aims to shift the consumption ideology from purchase to repair. More recently, Patagonia’s “<a rel="noopener" href="https://www.patagonia.ca/buy-less-demand-more/" target="_blank">Buy Less, Demand More</a>” campaign and its “<a rel="noopener" href="https://wornwear.patagonia.com/" target="_blank">Worn Wear</a>” scheme for used apparel have brought the notion of a circular economy into the company’s strategy to promote a culture of reuse rather than always buying new. Dutch chocolate brand Tony’s Chocolonely demonstrates collaborative coupling in its <a rel="noopener" href="https://tonyschocolonely.com/int/en/our-story/our-mission" target="_blank">campaign</a> to clean up production and supply chain practices in the chocolate manufacturing industry, and to eliminate illegal child labour and modern slavery. The company’s “<a rel="noopener" href="https://www.tonysopenchain.com/" target="_blank">open chain platform</a>” helps all industry players, including competitors, to foster equitable and transparent supply chains and ensure a living income is paid to cocoa farmers. The brand actively erodes its own potential competitive advantage in the process. Staying sceptical But transformative branding is complex and dynamic, and authenticity is paramount. For instance, earlier this year, <a rel="noopener" href="https://www.dutchnews.nl/news/2021/02/tonys-chocolonely-removed-from-ethical-chocolate-list-due-to-belgian-link/" target="_blank">Tony’s was removed</a> from watchdog organisation <a rel="noopener" href="https://www.slavefreechocolate.org/ethical-chocolate-companies" target="_blank">Slave Free Chocolate</a>’s ethical producers list over its partnership with a major chocolate producer being sued for allegedly using slave labour. Tony’s responded by claiming it was important to educate and inspire business partners and competitors to adopt ethical principles and practices. This complex and often slow process of negotiating what it means to be ethical is all part of transformative branding. It adapts to the differing goals and values of many stakeholders. And while transformative branding offers a path towards a more sustainable and equitable future, we should continue to cast a critical eye on brands claiming to be a force for good, challenge them and hold them accountable where necessary.<img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important; text-shadow: none !important;" src="https://counter.theconversation.com/content/170190/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a rel="noopener" href="https://theconversation.com/profiles/amanda-spry-609844" target="_blank">Amanda Spry</a>, Lecturer of Marketing, <a rel="noopener" href="https://theconversation.com/institutions/rmit-university-1063" target="_blank">RMIT University</a>; <a rel="noopener" href="https://theconversation.com/profiles/bernardo-figueiredo-336532" target="_blank">Bernardo Figueiredo</a>, Associate Professor of Marketing, <a rel="noopener" href="https://theconversation.com/institutions/rmit-university-1063" target="_blank">RMIT University</a>; <a rel="noopener" href="https://theconversation.com/profiles/jessica-vredenburg-532623" target="_blank">Jessica Vredenburg</a>, Senior Lecturer (Assistant Professor) in Marketing, <a rel="noopener" href="https://theconversation.com/institutions/auckland-university-of-technology-1137" target="_blank">Auckland University of Technology</a>; <a rel="noopener" href="https://theconversation.com/profiles/joya-kemper-609837" target="_blank">Joya Kemper</a>, Senior Lecturer in Marketing, <a rel="noopener" href="https://theconversation.com/institutions/university-of-auckland-1305" target="_blank">University of Auckland</a>, and <a rel="noopener" href="https://theconversation.com/profiles/lauren-gurrieri-5402" target="_blank">Lauren Gurrieri</a>, Senior Lecturer in Marketing, <a rel="noopener" href="https://theconversation.com/institutions/rmit-university-1063" target="_blank">RMIT University</a> This article is republished from <a rel="noopener" href="https://theconversation.com" target="_blank">The Conversation</a> under a Creative Commons license. Read the <a rel="noopener" href="https://theconversation.com/consumers-are-wise-to-woke-washing-but-truly-transformative-branding-can-still-make-a-difference-170190" target="_blank">original article</a>. Image: Getty Images

Money & Banking

How to wash your towels to keep them clean and fluffy

Fluffy clean towels Knowing how to wash towels properly is the gift that keeps on giving. After all, nothing beats the feeling of wrapping yourself up in a soft, luxurious towel when you get out of the shower. Not only does proper towel-washing help keep them clean and stink-free, but it will also extend the life of your towels, keeping them in tip-top shape instead of letting them become raggedy, limp and scratchy with age. While you might already <a rel="noopener" href="https://www.readersdigest.com.au/food-home-garden/home-tips/handy-hints-that-make-doing-the-laundry-less-of-a-hassle" target="_blank">know a lot about how to do laundry</a>, figuring out how to wash towels is a whole different ball game. After all, it’s all too easy to end up with smelly towels – and a larger but invisible problem like bacteria build-up. Read on for everything you need to know about keeping your towels clean and fluffy for the long haul, from how often you should wash them to what you should be washing them with. How often should you wash your towels? You should wash your towels every two to three days, according to both Philip Tierno, PhD, clinical professor of pathology and microbiology, and Chuck Gerba, PhD, a microbiology professor. Hold out longer than that and bacteria will start to build up on your towel, leaving it dirty and possibly even smelly. However, if you’re acne-prone, you might want to wash your towel every time you use it, says Tierno, rather than waiting a day or two between washes. As you rub your skin – especially open pustules – with a dirty towel, bacteria from your used towel could get on your skin and give you zits. One caveat: If you have a heated towel rack that speeds up dry time, you might get away with washing it after four uses – but that’s “pushing it,” says Tierno. Why it's important to wash your towel regularly Beyond leaving your towels smelling so fresh and clean, experts say washing them regularly is important for a number of reasons. It reduces the growth and build-up of bacteria. You only use your towel after scrubbing off in the shower, so it can’t get all that dirty, right? Not so fast. “When you say you wash off bacteria, you’re partially correct – you wash off some bacteria,” says Tierno, PhD. But some bacteria sticks around, and it gets on your towel during your post-shower rubdown. Once that bacteria is on there, it will start to multiply. “It keeps building up as you use the towel again day after day,” says Gerba. In fact, a study led by Gerba found that used hand towels have 1,000 times more coliform bacteria than newly bought ones. It reduces the risk of infection and acne. “When you use a towel vigorously, you scratch your skin,” says Gerba. Those tiny breaks in the surface of your skin – which are too small to notice – give bacteria an entryway to get in your body, which could result in pimples or, worse, an infection. It reduces musty odours. When bacteria builds up on your towel, it can start smelling musty or mildewy, and there’s nothing pleasant about that! It keeps them fluffy and absorbent. Freshly laundered towels work better at absorbing liquid – which, of course, is the whole purpose of a towel! – since the towel fibres have more air between them and aren’t matted down. How to wash towels Follow these steps for how to wash towels the right way: Separate your towels from the rest of your laundry and wash them separately, keeping coloured towels and white towels separate to avoid bleeding. Add about half the amount of detergent as usual (using too much detergent can cause build-up on your towels that reduce their absorption), as well as non-chlorine bleach (if needed). Skip the fabric softener entirely, which could also decrease absorption. Wash white towels in hot water and coloured towels in warm water, using a regular cycle for both. Once the wash cycle has finished, remove towels from the washing machine and shake out each one before putting it in the dryer. This loosens up the fabric’s loops and helps with drying and fluffiness. Dry towels on medium to low heat until dried completely; any remaining moisture could cause mildew. That said, avoid overdrying, which could damage the fabric fibres with time. It’s also a good idea to use dryer balls to make towels extra fluffy and to avoid twisting and clumping. Remove towels from the dryer immediately and shake them out again to ensure fluffiness before hanging or folding for storage. Washing towels with vinegar If your freshly laundered towels smell musty, vinegar may be your new best friend. Simply add 1/2 to 1 cup of white vinegar to the rinse cycle. This will help deodorise your towels and remove any detergent build-up that could be affecting their absorbency. Additional towel-washing tips Knowing how to wash towels will only get you so far. These tips will take your laundry game up another notch and ensure that you don’t make an all-too-common mistake. Wash towels separately. Whenever possible, don’t mix towels into your normal clothing loads. This helps extend the life of your towels by reducing the risk of pulled threads that can get caught on buttons or zippers. Wash new towels before using. Towels are often coated with silicone to make the fabric look and feel great in stores. However, these coatings can make your towels less absorbent, which is why laundering them first is a good idea. Air-dry towels between uses. Allowing your towel to air-dry fully cuts down bacteria growth, according to Tierno. Instead of folding it, leave it open and drape it on the rod. The more surface area that’s exposed to the air, the better it will dry. Don’t use dryer sheets. Dryer sheets, while amazing for your clothes, leave a fabric-softening residue on your towels, and that makes them less absorbent. Remove towels from the dryer right away. The secret to the fluffiest towels: Don’t let them sit in the dryer! The fibres will have more fluff and air between them if you remove them promptly. Dry towels on low heat. With time, high heat can damage towel fibres and decrease their life span (which is one to two years on average). Written by Maryn Liles. This article first appeared in <a rel="noopener" href="https://www.readersdigest.co.nz/food-home-garden/home-tips/how-to-wash-your-towels-to-keep-them-clean-and-fluffy" target="_blank">Reader’s Digest</a>. For more of what you love from the world’s best-loved magazine, <a rel="noopener" href="http://readersdigest.innovations.co.nz/c/readersdigestemailsubscribe?utm_source=over60&utm_medium=articles&utm_campaign=RDSUB&keycode=WRA87V" target="_blank">here’s our best subscription offer</a>. Image: Getty Images <img style="width: 100px !important; height: 100px !important;" src="https://oversixtydev.blob.core.windows.net/media/7820640/1.png" alt="" data-udi="umb://media/f30947086c8e47b89cb076eb5bb9b3e2" />

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