Search

Yes, blue light from your phone can harm your skin. A dermatologist explains

<a href="https://theconversation.com/profiles/michael-freeman-223922">Michael Freeman</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> Social media is full of claims that everyday habits can harm your skin. It’s also full of recommendations or advertisements for products that can protect you. Now social media has blue light from our devices in its sights. So can scrolling on our phones really damage your skin? And will applying creams or lotions help? Here’s what the evidence says and what we should really be focusing on. <h2>Remind me, what actually is blue light?</h2> Blue light is part of the visible light spectrum. Sunlight is the strongest source. But our electronic devices – such as our phones, laptops and TVs – also emit it, albeit at levels <a href="https://melasmaclinic.com.au/wp-content/uploads/2024/01/Melasma-LEDS.pdf">100-1,000 times</a> lower. Seeing as we spend so much time using these devices, there has been some concern about the impact of blue light on our health, including <a href="https://theconversation.com/do-blue-light-glasses-really-work-can-they-reduce-eye-strain-or-help-me-sleep-213145">on our eyes and sleep</a>. Now, we’re learning more about the impact of blue light on our skin. <h2>How does blue light affect the skin?</h2> The evidence for blue light’s impact on skin is still emerging. But there are some interesting findings. 1. Blue light can increase pigmentation <a href="https://academic.oup.com/ced/article-abstract/46/5/934/6598472?redirectedFrom=fulltext&login=false">Studies</a> <a href="https://onlinelibrary.wiley.com/doi/full/10.1111/srt.13401">suggest</a> exposure to blue light can stimulate production of melanin, the natural skin pigment that gives skin its colour. So too much blue light can potentially worsen hyperpigmentation – overproduction of melanin leading to dark spots on the skin – especially in people with darker skin. 2. Blue light can give you wrinkles Some research <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6280109/">suggests</a> blue light might damage collagen, a protein essential for skin structure, potentially accelerating the formation of wrinkles. A laboratory <a href="https://pubmed.ncbi.nlm.nih.gov/29399830/">study suggests</a> this can happen if you hold your device one centimetre from your skin for as little as an hour. However, for most people, if you hold your device more than 10cm away from your skin, that would reduce your exposure <a href="https://en.wikipedia.org/wiki/Inverse-square_law">100-fold</a>. So this is much less likely to be significant. 3. Blue light can disrupt your sleep, affecting your skin If the skin around your eyes looks dull or puffy, it’s easy to blame this directly on blue light. But as we know blue light affects sleep, what you’re probably seeing are some of the visible signs of sleep deprivation. We know blue light is particularly good at <a href="https://journals.physiology.org/doi/full/10.1152/japplphysiol.01413.2009?rss=1">suppressing</a> production of melatonin. This natural hormone normally signals to our bodies when it’s time for sleep and helps regulate our sleep-wake cycle. By suppressing melatonin, blue light exposure before bed disrupts this natural process, making it harder to fall asleep and potentially reducing the <a href="https://www.tandfonline.com/doi/abs/10.1080/07420528.2023.2173606">quality of your sleep</a>. The stimulating nature of screen content further disrupts sleep. Social media feeds, news articles, video games, or even work emails can keep our brains active and alert, hindering the transition into a sleep state. Long-term sleep problems can also <a href="https://academic.oup.com/ced/article-abstract/40/1/17/6621145?login=false">worsen</a> existing skin conditions, such as acne, eczema and rosacea. Sleep deprivation can elevate cortisol levels, a stress hormone that breaks down collagen, the protein responsible for skin’s firmness. Lack of sleep can also weaken the skin’s natural barrier, making it more susceptible to environmental damage and dryness. <h2>Can skincare protect me?</h2> The beauty industry has capitalised on concerns about blue light and offers a range of protective products such as mists, serums and lip glosses. From a practical perspective, probably only those with the more troublesome hyperpigmentation known as <a href="https://dermnetnz.org/topics/melasma">melasma</a> need to be concerned about blue light from devices. This condition requires the skin to be well protected from all visible light at all times. The only products that are totally effective are those that block all light, namely mineral-based suncreens or some cosmetics. If you can’t see the skin through them they are going to be effective. But there is a lack of rigorous testing for non-opaque products outside laboratories. This makes it difficult to assess if they work and if it’s worth adding them to your skincare routine. <h2>What can I do to minimise blue light then?</h2> Here are some simple steps you can take to minimise your exposure to blue light, especially at night when it can disrupt your sleep: <ul> <li> use the “night mode” setting on your device or use a blue-light filter app to reduce your exposure to blue light in the evening </li> <li> minimise screen time before bed and create a relaxing bedtime routine to avoid the types of sleep disturbances that can affect the health of your skin </li> <li> hold your phone or device away from your skin to minimise exposure to blue light </li> <li> use sunscreen. Mineral and physical sunscreens containing titanium dioxide and iron oxides offer broad protection, including from blue light. </li> </ul> <h2>In a nutshell</h2> Blue light exposure has been linked with some skin concerns, particularly pigmentation for people with darker skin. However, research is ongoing. While skincare to protect against blue light shows promise, more testing is needed to determine if it works. For now, prioritise good sun protection with a broad-spectrum sunscreen, which not only protects against UV, but also light.<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/233335/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/michael-freeman-223922">Michael Freeman</a>, Associate Professor of Dermatology, <a href="https://theconversation.com/institutions/bond-university-863">Bond 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/yes-blue-light-from-your-phone-can-harm-your-skin-a-dermatologist-explains-233335">original article</a>.

Body

Incredible moment huge whale body slams boat

The incredible moment a humpback whale launched out of the water and slammed itself onto an unsuspecting boat has been caught on camera. The incident, which was filmed off the coast of New Hampshire in the US, showed the whale leap from the water and onto the back of a small boat. Two fishermen were seen scrambling off the boat before it flipped onto its side and capsizes. There were reportedly no injuries, but the US Coast sent out an alert to nearby mariners to assist the two men if possible, according to TMZ. A nearby boat helped the two men and brought the capsized boat back to safety. The video has gone viral, with former NHL player Ryan Whitney reacting to the video on X: “There is a pissed off whale patrolling the waters of Portsmouth NH today. Head on swivel if you’re out there.” Experts have also spoken out on the incident, saying that it was just a coincidence, that had nothing to do with the humpback's temperament. “It was an accident,” Blue Ocean Society for Marine Conservation co-founder and director of research Dianna Schulte told The New York Post. <blockquote class="twitter-tweet"> There is a pissed off whale patrolling the waters of Portsmouth NH today. Head on swivel if you’re out there <a href="https://t.co/xQPIHs8ZjN">pic.twitter.com/xQPIHs8ZjN</a> — Ryan Whitney (@ryanwhitney6) <a href="https://twitter.com/ryanwhitney6/status/1815803088306933987?ref_src=twsrc%5Etfw">July 23, 2024</a></blockquote> According to the researcher, the humpback whale was feeding when it came up and hit the boat. “The whales will come up through schools of fish with their mouth wide open and close their mouth, either right before they break the surface or even after they break the surface,” she said. “The boat was in the wrong place.” A population boom in Atlantic menhaden, where whales, dolphins and sharks can usually be found, could be the reason why the mammal is coming closer to the coast, according to Schulte. She said that it could be using the shallow waters to its advantage as it builds its hunting skills. “The boaters that are in the video, they should have known better to not be fishing with a large whale in the area, because (an accident) can happen,” she said. “The whales, when they’re feeding on the fish schools, when they’re that dense, they just can’t see through the fish school, so they don’t know what’s above them, especially on a cloudy day like today. So the whale had no idea that the boat was even there,” she added. “I’ve been watching whales and researching whales for 30 years, and I’ve never seen a humpback whale purposely hit a boat.” She warned that boaters and fishermen should give the mammal as much as 100 yards of space, especially during mealtime. Images: Instagram <div class="more-coverage-v2" style="box-sizing: inherit; margin-bottom: 0px; border-top: 1px solid #e0e1e2; float: right; margin-left: 16px; max-width: 40%; padding: 16px 0px; font-family: 'Helvetica Neue', HelveticaNeue, Helvetica, Arial, sans-serif; font-size: 18px;"> </div>

Travel Trouble

People in the world’s ‘blue zones’ live longer – their diet could hold the key to why

<a href="https://theconversation.com/profiles/justin-roberts-1176632">Justin Roberts</a>, <a href="https://theconversation.com/institutions/anglia-ruskin-university-1887">Anglia Ruskin University</a>; <a href="https://theconversation.com/profiles/joseph-lillis-1505087">Joseph Lillis</a>, <a href="https://theconversation.com/institutions/anglia-ruskin-university-1887">Anglia Ruskin University</a>, and <a href="https://theconversation.com/profiles/mark-cortnage-438941">Mark Cortnage</a>, <a href="https://theconversation.com/institutions/anglia-ruskin-university-1887">Anglia Ruskin University</a> Ageing is an inevitable part of life, which may explain our <a href="https://time.com/4672969/why-do-people-want-to-live-so-long/">strong fascination</a> with the <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2726954">quest for longevity</a>. The allure of <a href="https://pubmed.ncbi.nlm.nih.gov/26566891/">eternal youth</a> drives a <a href="https://www.alliedmarketresearch.com/longevity-and-anti-senescence-therapy-market-A14010">multi-billion pound industry</a> ranging from anti-ageing products, supplements and <a href="https://www.everydayhealth.com/diet-nutrition/longevity-diet">diets</a> for those hoping to extend their lifespan. f you look back to the turn of the 20th century, average life expectancy in the UK was around 46 years. Today, it’s closer to <a href="https://population.un.org/wpp/">82 years</a>. We are in fact <a href="https://pubmed.ncbi.nlm.nih.gov/27706136/">living longer than ever before</a>, possibly due to medical advancements and improved <a href="https://www.health.org.uk/publications/reports/mortality-and-life-expectancy-trends-in-the-uk">living and working conditions</a>. But living longer has also come at a price. We’re now seeing higher rates of <a href="https://www.who.int/data/gho/data/themes/mortality-and-global-health-estimates/ghe-leading-causes-of-death">chronic and degenerative diseases</a> – with heart disease consistently topping the list. So while we’re fascinated by what may help us live longer, maybe we should be more interested in being healthier for longer. Improving our “<a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4632858/">healthy life expectancy</a>” remains a global challenge. Interestingly, certain locations around the world have been discovered where there are a high proportion of centenarians who display remarkable physical and mental health. The <a href="https://pubmed.ncbi.nlm.nih.gov/15489066/">AKEA study of Sardinia, Italy</a>, as example, identified a “blue zone” (named because it was marked with blue pen), where there was a higher number of locals living in the central-eastern mountainous areas who had reached their 100th birthday compared with the wider Sardinian community. This longevity hotspot has since been expanded, and now includes several other areas around the world which also have greater numbers of longer-living, healthy people. Alongside Sardinia, these blue zones are now <a href="https://www.netflix.com/gb/title/81214929">popularly recognised</a> as: Ikaria, Greece; Okinawa, Japan; Nicoya, Costa Rica; and Loma Linda, California. Other than their long lifespans, people living in these zones also appear to share certain other commonalities, which centre around being <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3874460">part of a community</a>, having a <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4224996/">life purpose</a>, eating <a href="https://pubmed.ncbi.nlm.nih.gov/33514872/">nutritious, healthy foods</a>, keeping <a href="https://www.nature.com/articles/s41398-021-01735-7">stress levels</a> low and undertaking purposeful daily <a href="https://pubmed.ncbi.nlm.nih.gov/30202288/">exercise or physical tasks</a>. Their longevity could also relate to their <a href="https://pubmed.ncbi.nlm.nih.gov/9010380/">environment</a>, being mostly rural (or less polluted), or because of <a href="https://pubmed.ncbi.nlm.nih.gov/22253498/">specific longevity genes</a>. However, studies indicate genetics may only account for <a href="https://pubmed.ncbi.nlm.nih.gov/8786073">around 20-25% of longevity</a> – meaning a person’s lifespan is a complex interaction between lifestyle and genetic factors, which contribute to a long and healthy life. <h2>Is the secret in our diet?</h2> When it comes to diet, each blue zone has its own approach – so one specific food or nutrient does not explain the remarkable longevity observed. But interestingly, a diet rich in <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3662288">plant foods</a> (such as locally-grown vegetables, fruits and legumes) does appear to be reasonably consistent across these zones. For instance, the Seventh-day Adventists of Loma Linda are <a href="https://pubmed.ncbi.nlm.nih.gov/10641813/">predominately vegetarian</a>. For centenarians in Okinawa, <a href="https://pubmed.ncbi.nlm.nih.gov/20234038/">high intakes of flavonoids</a> (a chemical compound typically found in plants) from purple sweet potatoes, soy and vegetables, have been linked with <a href="https://pubmed.ncbi.nlm.nih.gov/11710359/">better cardiovascular health</a> – including lower cholesterol levels and lower incidences of stroke and heart disease. In Nicoya, consumption of locally produced rice and beans has been associated with <a href="https://pubmed.ncbi.nlm.nih.gov/34444746/">longer telomere length</a>. Telomeres are the structural part at the end of our chromosomes which protect our genetic material. Our telomeres get shorter each time a cell divides – so get progressively shorter as we age. Certain <a href="https://pubmed.ncbi.nlm.nih.gov/21102320/">lifestyle factors</a> (such as smoking and poor diet) can also shorten telomere length. It’s thought that telomere length acts as a <a href="https://pubmed.ncbi.nlm.nih.gov/31728493/">biomarker of ageing</a> – so having longer telomeres could, in part, be linked with longevity. But a plant-based diet isn’t the only secret. In Sardinia, for example, meat and fish is consumed in moderation in addition to locally grown vegetables and <a href="https://journalofethnicfoods.biomedcentral.com/articles/10.1186/s42779-022-00152-5">traditional foods</a> such as acorn breads, pane carasau (a sourdough flatbread), honey and soft cheeses. Also observed in several blue zone areas is the inclusion of <a href="https://www.jacc.org/doi/10.1016/j.jacc.2021.10.041">olive oil</a>, <a href="https://pubmed.ncbi.nlm.nih.gov/33669360/">wine</a> (in moderation – around 1-2 glasses a day), as well as <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3830687/">tea</a>. All of these contain powerful antioxidants which may help <a href="https://ncbi.nlm.nih.gov/pmc/articles/PMC10049696/">protect our cells</a> from damage <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6273542/">as we age</a>. Perhaps then, it’s a combination of the protective effects of various nutrients in the diets of these centenarians, which explains their exceptional longevity. Another striking observation from these longevity hot spots is that meals are typically <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7232892">freshly prepared at home</a>. Traditional blue zone diets also don’t appear to contain <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6538973/">ultra-processed foods</a>, fast foods or sugary drinks which may <a href="https://pubmed.ncbi.nlm.nih.gov/32330232/">accelerate ageing</a>. So maybe it’s just as important to consider what these longer-living populations are not doing, as much as what they are doing. There also appears to be a pattern of eating until 80% full (in other words partial <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9036399/">caloric reduction</a>. This could be important in also supporting how our cells deal with damage as we age, which could mean a longer life. Many of the factors making up these blue zone diets – primarily plant-based and natural whole foods – are associated with <a href="https://pubmed.ncbi.nlm.nih.gov/35706591/">lower risk of chronic diseases</a> such as <a href="https://pubmed.ncbi.nlm.nih.gov/28728684/">heart disease</a> and <a href="https://pubmed.ncbi.nlm.nih.gov/37589638/">cancer</a>. Not only could such diets contribute to a <a href="https://pubmed.ncbi.nlm.nih.gov/37836577/">longer, healthier life</a>, but could support a more <a href="https://pubmed.ncbi.nlm.nih.gov/33397404/">diverse gut microbiome</a>, which is also associated with healthy ageing. Perhaps then we can learn something from these remarkable centenarians. While diet is only one part of the bigger picture when it comes to longevity, it’s an area we can do something about. In fact, it might just be at the heart of improving not only the quality of our health, but the quality of how we age.<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/221463/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/justin-roberts-1176632">Justin Roberts</a>, Professor of Nutritional Physiology, <a href="https://theconversation.com/institutions/anglia-ruskin-university-1887">Anglia Ruskin University</a>; <a href="https://theconversation.com/profiles/joseph-lillis-1505087">Joseph Lillis</a>, PhD Candidate in Nutritional Physiology, <a href="https://theconversation.com/institutions/anglia-ruskin-university-1887">Anglia Ruskin University</a>, and <a href="https://theconversation.com/profiles/mark-cortnage-438941">Mark Cortnage</a>, Senior Lecturer in Public Health and Nutrition, <a href="https://theconversation.com/institutions/anglia-ruskin-university-1887">Anglia Ruskin University</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/people-in-the-worlds-blue-zones-live-longer-their-diet-could-hold-the-key-to-why-221463">original article</a>.

Food & Wine

Do blue-light glasses really work? Can they reduce eye strain or help me sleep?

<a href="https://theconversation.com/profiles/laura-downie-1469379">Laura Downie</a>, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a> Blue-light glasses are said to <a href="https://www.baxterblue.com.au/collections/blue-light-glasses">reduce eye strain</a> when using <a href="https://www.blockbluelight.com.au/collections/computer-glasses">computers</a>, improve your <a href="https://www.ocushield.com/products/anti-blue-light-glasses">sleep</a> and protect your eye health. You can buy them yourself or your optometrist can prescribe them. But <a href="https://mivision.com.au/2019/03/debate-continues-over-blue-blocking-lenses/">do they work</a>? Or could they do you harm? We <a href="https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD013244.pub2/full">reviewed</a> the evidence. Here’s what we found. <h2>What are they?</h2> Blue-light glasses, blue light-filtering lenses or blue-blocking lenses are different terms used to describe lenses that reduce the amount of short-wavelength visible (blue) light reaching the eyes. Most of these lenses prescribed by an optometrist decrease blue light transmission by <a href="https://onlinelibrary.wiley.com/doi/10.1111/opo.12615">10-25%</a>. Standard (clear) lenses do not filter blue light. A wide variety of lens products are available. A filter can be added to prescription or non-prescription lenses. They are widely marketed and are becoming <a href="https://onlinelibrary.wiley.com/doi/10.1111/opo.12615">increasingly popular</a>. There’s often an added cost, which depends on the specific product. So, is the extra expense worth it? <h2>Blue light is all around us</h2> Outdoors, sunlight is the main source of blue light. Indoors, light sources – such as light-emitting diodes (LEDs) and the screens of digital devices – emit varying degrees of blue light. The amount of blue light emitted from artificial light sources is much lower than from the Sun. Nevertheless, artificial light sources are all around us, at home and at work, and we can spend a lot of our time inside. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/549210/original/file-20230920-16-tsb23b.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/549210/original/file-20230920-16-tsb23b.jpg?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/549210/original/file-20230920-16-tsb23b.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=600&h=450&fit=crop&dpr=1 600w, https://images.theconversation.com/files/549210/original/file-20230920-16-tsb23b.jpg?ixlib=rb-1.1.0&q=30&auto=format&w=600&h=450&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/549210/original/file-20230920-16-tsb23b.jpg?ixlib=rb-1.1.0&q=15&auto=format&w=600&h=450&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/549210/original/file-20230920-16-tsb23b.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&h=566&fit=crop&dpr=1 754w, https://images.theconversation.com/files/549210/original/file-20230920-16-tsb23b.jpg?ixlib=rb-1.1.0&q=30&auto=format&w=754&h=566&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/549210/original/file-20230920-16-tsb23b.jpg?ixlib=rb-1.1.0&q=15&auto=format&w=754&h=566&fit=crop&dpr=3 2262w" alt="Blue light-filtering lenses block some blue light from screens from reaching the eye" /></a><figcaption>Screens emit blue light. The lenses are designed to reduce the amount of blue light that reaches the eye. <a class="source" href="https://www.shutterstock.com/image-vector/blue-light-blocking-ray-filter-lens-2286229107">Shutterstock</a></figcaption></figure> Our research team at the University of Melbourne, along with collaborators from Monash University and City, University London, sought to see if the best available evidence supports using blue light-filtering glasses, or if they could do you any harm. So we conducted a <a href="https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD013244.pub2/full">systematic review</a> to bring together and evaluate all the relevant studies. We included all randomised controlled trials (clinical studies designed to test the effects of interventions) that evaluated blue light-filtering lenses in adults. We identified 17 eligible trials from six countries, involving a total of 619 adults. <h2>Do they reduce eye strain?</h2> We found no benefit of using blue light-filtering lenses, over standard (clear) lenses, to reduce eye strain with computer use. This conclusion was based on consistent findings from three studies that evaluated effects on eye strain over time periods ranging from two hours to five days. <h2>Do they help you sleep?</h2> Possible effects on sleep were uncertain. Six studies evaluated whether wearing blue-light filtering lenses before bedtime could improve sleep quality, and the findings were mixed. These studies involved people with a diverse range of medical conditions, including insomnia and bipolar disorder. Healthy adults were not included in the studies. So we do not yet know whether these lenses affect sleep quality in the general population. <h2>Do they boost your eye health?</h2> We did not find any clinical evidence to support using blue-light filtering lenses to protect the macula (the region of the retina that controls high-detailed, central vision). None of the studies evaluated this. <h2>Could they do harm? How about causing headaches?</h2> We could not draw clear conclusions on whether there might be harms from wearing blue light-filtering lenses, compared with standard (non blue-light filtering) lenses. Some studies described how study participants had headaches, lowered mood and discomfort from wearing the glasses. However, people using glasses with standard lenses reported similar effects. <h2>What about other benefits or harms?</h2> There are some important general considerations when interpreting our findings. First, most of the studies were for a relatively short period of time, which limited our ability to consider longer-term effects on vision, sleep quality and eye health. Second, the review evaluated effects in adults. We don’t yet know if the effects are different for children. Finally, we could not draw conclusions about the possible effects of blue light-filtering lenses on many vision and eye health measures, including colour vision, as the studies did not evaluate these. <h2>In a nutshell</h2> Overall, based on relatively limited published clinical data, our review does not support using blue-light filtering lenses to reduce eye strain with digital device use. It is unclear whether these lenses affect vision quality or sleep, and no conclusions can be drawn about any potential effects on the health of the retina. High-quality research is needed to answer these questions, as well as whether the effectiveness and safety of these lenses varies in people of different ages and health status. If you have eye strain, or other eye or vision concerns, discuss this with your optometrist. They can perform a thorough examination of your eye health and vision, and discuss any relevant treatment options.<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/213145/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/laura-downie-1469379">Laura Downie</a>, Associate Professor in Optometry and Vision Sciences, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</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/do-blue-light-glasses-really-work-can-they-reduce-eye-strain-or-help-me-sleep-213145">original article</a>.

Body

Why can’t we just tow stranded whales and dolphins back out to sea?

<a href="https://theconversation.com/profiles/vanessa-pirotta-873986">Vanessa Pirotta</a>, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</a> On Tuesday night, a pod of almost 100 long-finned pilot whales stranded itself on a beach on Western Australia’s south coast. Over the course of Wednesday, more than 100 parks and wildlife staff and 250 registered volunteers worked tirelessly to try to keep alive the 45 animals surviving the night. They used small boats and surf skis to try to get the pilot whales into deeper water. Volunteers helped keep the animals’ blowholes above water to prevent them drowning, and poured water on them to cool them down. Our rescue efforts were, sadly, unsuccessful. The animals (actually large ocean-going dolphins) able to be towed or helped out to deeper water turned around and stranded themselves again, <a href="https://www.facebook.com/watch/?v=228337910167574&ref=sharing">further down the beach</a>. Sadly, they had to be euthanised. Unfortunately, towing whales and dolphins is not simple. It can work and work well, as we saw in Tasmania last year, when dozens of pilot whales were rescued. But rescuers have to have good conditions and a fair dash of luck for it to succeed. <h2>Rescuing beached whales is hard</h2> When we try to rescue stranded whales and dolphins, the goal is to get them off the sandbars or beach, and back into deep water. Why is it so difficult? Consider the problem. First, you have to know that a pod has beached itself. Then, you have to be able to get there in time, with people skilled in wildlife rescue. These animals are generally too big and heavy to rely on muscle power alone. To get them out far enough, you need boats and sometimes tractors. That means the sea conditions and the slope of the beach have to be suitable. Often, one of the first things rescuers might do is look for those individuals who might be good candidates to be refloated. Generally, these are individuals still alive, and not completely exhausted. If rescuers have boats and good conditions, they may use slings. The boats need to be able to tow the animals well out to sea. Trained people must always be there to oversee the operation. That’s because these large, stressed animals could seriously injure humans just by moving their bodies on the beach. There are extra challenges. Dolphins and whales are slippery and extremely heavy. Long-finned pilot whales can weigh up to 2.3 tonnes. They may have never seen humans before and won’t necessarily know humans are there to help. They’re out of their element, under the sun and extremely stressed. Out of the water, their sheer weight begins to crush their organs. They can also become sunburnt. Because they are so efficient at keeping a comfortable temperature in the sea, they can overheat and die on land. Often, as we saw yesterday, they can’t always keep themselves upright in the shallow water. And to add to the problem, pilot whales are highly social. They want to be with each other. If you tow a single animal back out to sea, it may try to get back to its family and friends or remain disorientated and strand once again. Because of these reasons – and probably others – it wasn’t possible to save the pilot whales yesterday. Those that didn’t die naturally were euthanised to minimise their suffering. <h2>Successful rescues do happen</h2> Despite the remarkable effort from authorities and local communities, we couldn’t save this pod. Every single person working around the clock to help these animals did an amazing job, from experts to volunteers in the cold water to those making cups of tea. But sometimes, we get luckier. Last year, 230 pilot whales beached themselves at Macquarie Harbour, on Tasmania’s west coast. By the time rescuers could get there, <a href="https://www.theguardian.com/australia-news/2022/sep/27/44-pilot-whales-rescued-and-returned-to-sea-after-mass-stranding-at-tasmanian-beach">most were dead</a>. But dozens were still alive. This time, conditions were different and towing worked. Rescuers were able to bring boats close to shore. Surviving pilot whales were helped into a sling, and then the boat took them far out to sea. Taking them to the same location prevented them from beaching again. <h2>Every stranding lets us learn more</h2> Unfortunately, we don’t really know why whales and dolphins strand at all. Has something gone wrong with how toothed whales and dolphins navigate? Are they following a sick leader? Are human-made undersea sounds making it too loud? Are they avoiding predators such as killer whales? We don’t know. We do know there are stranding hotspots. Macquarie Harbour is one. In 2020, it was the site of one of the worst-ever strandings, with up to 470 pilot whales stranded. Authorities were able to save 94, drawing on trained <a href="https://www.theguardian.com/environment/2020/sep/25/death-at-hells-gates-rescuers-witness-tragic-end-for-hundreds-of-pilot-whales-on-australian-coast">rescue experts</a>. We will need more research to find out why they do this. What we do know suggests navigational problems play a role. That’s because we can divide whales and dolphins into two types: toothed and toothless. Whales and dolphins with teeth – such as pilot whales – appear to beach a lot more. These animals use echolocation (biological sonar) to find prey with high-pitched clicks bouncing off objects. But toothless baleen whales like humpbacks (there are no dolphins with baleen) don’t use this technique. They use low-frequency sounds, but to communicate, not hunt. So – it is possible to save beached whales and dolphins. But it’s not as easy as towing them straight back to sea, alas. The Conversation thanks 10-year-old reader Grace Thornton from Canberra for suggesting the question that gave rise to this article.<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/210544/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/vanessa-pirotta-873986">Vanessa Pirotta</a>, Postdoctoral Researcher and Wildlife Scientist, <a href="https://theconversation.com/institutions/macquarie-university-1174">Macquarie University</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-cant-we-just-tow-stranded-whales-and-dolphins-back-out-to-sea-210544">original article</a>.

Travel Trouble

"We strongly object": Cruise line passengers witness mass whale hunt

A cruise line has apologised to over 1,000 passengers who witnessed a gruesome whale killing while their ship was docking at a port. Ambassador Cruise Lines confirmed on Thursday that the arrival of their ship Ambition in Torshavn in the Faroe Islands - located between Scotland, Iceland and Norway in the North Atlantic - had coincided “with the culmination of a hunt of 40+ pilot whales in the port area.” “We were incredibly disappointed that this hunt occurred at the time that our ship was in port. We strongly object to this outdated practice, and have been working with our partner, ORCA, a charity dedicated to studying and protecting whales, dolphins and porpoises in UK and European waters, to encourage change since 2021,” Ambassador said following the arrival of their ship in the Torshavn port area on the southern part of the main island. Communities in the Faroe Islands have been hunting pilot whales in the area for centuries, as many partake in the cultural tradition, known as grindadráp, to harvest the whale's meat which is an integral part of the local diet. As such, the government of the Faroe Islands issued a statement in rebuttal, reiterating their clear stance on the historical practice of whale hunting. “As has been the case for centuries, whaling still occurs in the Faroe Islands today,” a statement from the government said, on behalf of the estimated 53,000 people on the island, explaining the values of the whaling hunt. “The Faroese have eaten pilot whale meat and blubber since they first settled the islands over a millenia ago. Today, as in times past, the whale drive is a community activity open to all, while also well organised on a community level and regulated by national laws.” The Faroe Island’s government said that the hunt is part of the island’s sustainability efforts and that “the meat and blubber from the hunt is distributed equally among those who have participated … Hunting and killing methods have been improved to ensure as little harm to the whales as possible. All hunters must now obtain a hunting license in order to kill a whale.” In their apology, Ambassador said that sustainability is one of the cruise line’s “core values”, and that the company fully appreciates that “witnessing this local event would have been distressing for the majority of guests onboard. Accordingly, we would like to sincerely apologise to them for any undue upset.” Image credits: Getty Images

Travel Trouble

How to beat the retirement blues

When people plan their retirement they don’t usually expect Post retiring depression (PRD). This kind of depression usually stems from dashed expectations, financial trouble or feeling lost and lonely. That’s why we’ve got four top tips to avoid PRD and enjoy your free time. 1. Plan it out Know what you want to do, not what you think you should be doing. Don’t hold back in indulging yourself, travelling the world, volunteering abroad – the temporary discomfort of not knowing is better than realising when it’s too late that you never completed your bucket list. 2. Routine A sudden lack of structure can become exhausting or at least unsettling. Schedule activities such as exercise, housework, errands, and social time. Then let the day flow from there. 3. Keep active There is a lot of research to show that the people who cope best with retirement are those who stay active and involved. This might include: <ul> <li>Developing an old hobby or starting a new one. </li> <li>Staying physically active, through walking, swimming, gym or sport. Make sure your exercise routine is appropriate for your physical capacities and limitations. </li> <li>Volunteering with a charity or church group. </li> <li>Working part-time. </li> <li>Studying a course.</li> </ul> 4. Stay in touch Loneliness and isolation can be easily avoided, so don’t fall into the trap of feeling alone. Make the effort to stay in contact with family and friends. Offer to babysit your grandchildren. Check out local community centres for upcoming activities you might enjoy. Even if you're not sure try something new, you might surprise yourself! Images: Getty

Retirement Life

"I fell for it!": Boys in blue crash gender reveal party

One Sydney couple have taken their friends and family by surprise with their high-stakes gender reveal, where the father-to-be was apparently put under arrest by two police officers. Mina Ibrahim revealed their elaborate prank with a video posted to his TikTok account. Mina’s video begins with footage of the moment of his ‘arrest’, before it cuts to the TikToker at a later date, explaining that “that’s me being arrested at my baby’s gender reveal.” He goes on to share the full video, and a promise that the ending will answer any questions his viewers may have. In the clip, the parents-to-be can be seen talking to two uniformed NSW ‘police officers’, guests all around them, with Mina asking for onlookers to get their phones out. He then pushes one of the officers, telling them to leave, and both grab him before attempting to handcuff him, while his pregnant partner attempts to intervene. As family members rush to assist, one of the officers calls for everyone to calm down, then delivers news that takes them all by surprise - and delight - by telling them, “it’s a baby girl.” “So it was the cops who announced to everyone that I was having a baby girl,” present-day Mina informed his audience, before noting that there was a fake balloon inside to throw their guests off the surprise scent. <div class="mol-embed" style="margin: 0px 0px 8px; padding: 0px; min-height: 1px; letter-spacing: -0.16px; text-align: center; font-family: graphik, Arial, sans-serif; font-size: 16px; background-color: #ffffff;"> <blockquote id="v34606683345148116" class="tiktok-embed" style="margin: 18px auto; padding: 0px; min-height: 1px; letter-spacing: -0.01em; position: relative; width: 605px; box-sizing: border-box; line-height: 1.15; overflow: hidden; text-size-adjust: 100%; font-family: proxima-regular, PingFangSC, sans-serif; max-width: 605px; min-width: 325px;" cite="https://www.tiktok.com/@mina.ibs/video/7232964823296773383" data-video-id="7232964823296773383" data-embed-from="oembed"><iframe style="letter-spacing: -0.01em; border-width: initial; border-style: none; width: 605px; height: 735px; display: block; visibility: unset; max-height: 735px;" src="https://www.tiktok.com/embed/v2/7232964823296773383?lang=en-GB&referrer=https%3A%2F%2Fwww.dailymail.co.uk%2Fnews%2Farticle-12082153%2FGender-reveal-party-prank-sees-cops-arrest-father-be.html&embedFrom=oembed" name="__tt_embed__v34606683345148116" sandbox="allow-popups allow-popups-to-escape-sandbox allow-scripts allow-top-navigation allow-same-origin"></iframe></blockquote> </div> The prank attracted thousands of views online, with many flocking to his comments section to share their congratulations with the parents-to-be. Others, while thrilled for them and their happy news, were open about their concern, having fallen for the trick right along with the couple’s loved ones. “I fell for it and I was worried for your wife!!!,” one confessed. “I was freaking out hahahah you got me”. “I was worried too haha … you scared me,” another said. “Omygosh! I was ready to sue them coppas with you!” came one response, “but congratsss! What a way to reveal!” One other simply wanted to know if the entire situation was even allowed, believing that impersonating the police may not be. And another had simply been suspicious from the very start, noting “Broooo the whole time I was like … something ain’t right! He’s not carrying his gun”. Images: TikTok

Family & Pets

Aussie author of "Puberty Blues" dies at 64

Gabrielle Carey, co-author of the iconic novel Puberty Blues, has passed away at 64. The news was reportedly broken by Carey’s old friend and co-writer Kathy Lette, who was the other half of the creative powerhouse that brought Puberty Blues to life. In a post to social media, Lette shared a throwback picture of the pair in their younger years, and wrote, “I’m deeply saddened by the tragic news about my old friend Gabrielle Carey. “I have such happy memories of our teenage years. They were halcyon, heady days full of love, laughter and adventure. “We made some mischief and broke some barriers by writing Puberty Blues – our raw, earthy take on the brutal treatment of young women in the Australian surfing scene which is sadly, still so relevant. “My heartfelt condolences to her family and friends.” <blockquote class="twitter-tweet"> I’m deeply saddened by the tragic news about my old friend Gabrielle Carey. I have such happy memories of our teenage years. They were halcyon, heady days full of love, laughter and adventure. 1/2 🧵 <a href="https://t.co/2wZZiRf1hd">pic.twitter.com/2wZZiRf1hd</a> — Kathy Lette (@KathyLette) <a href="https://twitter.com/KathyLette/status/1654136967636959234?ref_src=twsrc%5Etfw">May 4, 2023</a></blockquote> The groundbreaking book they penned together, which went on to be adapted as both a movie and a hit TV series, was a candid - then-controversial - story of two teenage girls growing up in Sydney’s Sutherland Shire. It pushed boundaries, captivated young audiences while tackling themes many did not expect for said target audience, and is regarded by many as being the first Australian teenage novel to be written by teens. From Puberty Blues, Carey went on to publish memoirs and nonfiction works, with another of her books - her 1984 Just Us, which covered her relationship with rapist and prisoner Terry Haley, who she married while he was imprisoned - also made into a telemovie in 1986. No suspicious circumstances surrounded her death, according to The Australian, though the tragic news comes just months after she wrote about her father’s suicide in The Sydney Morning Herald. At the time, Carey had revealed she was afraid of reaching 64, as that was when he too had passed on. “It was only decades later, when my father died from suicide on the very day he turned 64, that I became terrified of that number,” she wrote. “If I have inherited my father’s disposition for depression, did that mean I would also end up in an early grave? Carey’s early passing is one that has hit her friends and her fans hard, with many joining Lette in sharing their grief and their condolences on social media. “Farewell dear Gabrielle. You were a sister in the cause of mental illness, its impact & our children. I’m enriched for having known you,” one supporter wrote. “Thank you.” “Writer - Reader - Intellectual - Joycean (fanatical) - Elizabeth von Arnim devotee - Avid Gardener - Rose Petal Jam Maker - Football Follower - Kayaker - Yogi - Joker - Irrepressible Spirit - Hobbit - Underground Writer - My Friend,” friend and fellow writer Yumna Kassab wrote. “I will always miss you.” “So sorry for your loss,” one fan said in response to Lette’s tweet. “You have no idea how much as a girl growing up in a coastal town with a surfing scene I understood Puberty Blues. I saw it every day. You & Gabrielle laid it all bare & made girls stand up for themselves. Thank you”. “My deepest condolences Kathy,” another offered. “The two of you wrote something so treasured by Gen X girls. It was our ‘how to say no guide’. Our Teen handbook. But it still let us live our lives & learn as we went. RIP Gabrielle Carey.” Images: Facebook

News

Hill Street Blues star passes away

Hill Street Blues star Barbara Bosson has passed away aged 83. Bosson, who played Fay Furillo in the American police drama, was a popular TV star in the ‘80s, earning five consecutive Emmy nominations for her role. She was also the ex-wife of TV giant Steven Bohcho, who created Hill Street Blues and several other hit shows at the time. The news of Bosson’s death was shared by her son, Jesse Bohcho, who shared an image of he and his mother when he was a child. "More spirit and zest than you could shake a stick at. When she loved you, you felt it without a doubt. If she didn't, you may well have also known that too. Forever in our hearts. I love you Mama. Barbara "Babs" Bosson Bochco 1939-2023," he captioned the image. Dirty Dancing star Jennifer Grey shared her support, commenting a red heart under Bochco’s Instagram. Bosson was also known for her roles in shows including Murder One, Hooperman and films including Cop Rock and Calendar Girl Murders. Hill Street Blues proved Bosson's main claim to fame, with her leaving the show in 1985 during its sixth season after being fired from the project over creative disagreements. Bosson and Steven Bohcho went on to work together on other projects, including the Rockford Files spin-off Richie Brockelman, Private Eye, Hooperman and the musical Cop Rock. The pair divorced in 1997 but continued to co-parent their son Jesse, who was born in 1975. Steven died in 2018 at the age of 73. Further details of Bosson’s death are yet to be revealed. Image credit: Instagram

News

How to make the most of your hard-earned savings

When you have a lump sum of money, it can often be very confusing to know what to do with it, when putting it into a bank offers little in the way of interest or reward. Chances are you might have been neglecting your savings, leaving them languishing in accounts that pay very little, if anything at all. But there is a better option that could see you drastically increasing your savings. A term deposit taker, such as boutique investment company Blue Sky money, can offer you far greater returns on your deposit – an impressive 7 per cent, around twice that which banks offer. Better yet, with all profits staying within and benefiting the community, you can also enjoy the knowledge that you’re helping to make a difference to New Zealanders while growing your nest egg. <a href="https://blueskymoney.co.nz/" target="_blank" rel="noopener"><img src="https://oversixtydev.blob.core.windows.net/media/2022/12/Blue-Sky-7.jpg" alt="" width="1280" height="1062" /></a> Set and forget Most of us are far too busy and time-poor to spend too much time tending to our finances. But that doesn’t mean we don’t want to see them grow! At Blue Sky money, with a minimum deposit of $30,000 and a minimum 12-month fixed term, you don’t need to think about anything. You’ll have your own personal customer service agent, and can just sit back and watch as your interest is calculated and paid into your account monthly – no fees, no charges. Believing that looking after your finances should be a pleasure, not a chore, Blue Sky money prides itself on offering a superior service and being far more user friendly than banks, so not only will your money work harder, but you’ll enjoy the satisfaction of feeling part of a financial family that truly cares about your wellbeing. Blue Sky money can also assist with small to medium loans for land, houses or other assets, are on hand to help with reverse mortgages and are even investing in retirement villages. And in an exciting new addition, from 2023 Blue Sky is launching its own travel club for all those who place their deposits. You’ll receive special deals and tour packages, ensuring your money goes even further, while enjoying everything the world has to offer. <img src="https://oversixtydev.blob.core.windows.net/media/2022/12/money-laptop-happy-GettyImages-1307391886.jpg" alt="" width="1280" height="720" /> Improving New Zealanders’ lives And while getting some much-needed extra cash seems like a pretty good deal all on its own, you’ll also have the piece of mind of knowing that with Blue Sky money – a family run business owned by Blue Sky charity, which is registered in New Zealand – all profits stay within New Zealand. With a philosophy of trying to make the world a better place, Blue Sky invests in research and development to better New Zealanders lives – everything from groundbreaking cancer treatment using ultrasound, to sustainable energy, sea trailers and indestructible home builds. Blue Sky money can also assist with small to medium loans for land, houses or other assets, and are available to help with reverse mortgages. And in an exciting new addition, from 2023 Blue Sky is launching its own travel club, where you can receive special deals and tour packages. So if you’re looking to make your savings work harder for you, while aligning yourself with a humanitarian company that’s working to improve the lives of New Zealanders, be sure to get in touch with the Blue Sky team at <a href="https://blueskymoney.co.nz/" target="_blank" rel="noopener">blueskymoney.co.nz</a> <img src="https://oversixtydev.blob.core.windows.net/media/2022/12/tropical-island-GettyImages-1360554439.jpg" alt="" width="1280" height="720" /> Images: Supplied. This is a sponsored article produced in partnership with <a href="https://blueskymoney.co.nz/" target="_blank" rel="noopener">Blue Sky money</a>.

Money & Banking

About 200 dead whales have been towed out to sea off Tasmania – and what happens next is a true marvel of nature

Australians watched in horror as 230 pilot whales became stranded at a beach near Macquarie Harbour on Tasmania’s west coast. Some whales were saved, but the vast majority died. This left a big problem: what to do with all the rotting whale carcasses? Authorities decided to tow the dead animals out to sea, hoping they’ll eventually sink to the seafloor. Such mass whale strandings are sad to witness. But in this case, the aftermath presents a fascinating opportunity for scientific discovery. As the dead whales decompose, an astonishing and rare chain of events is likely to flow through the marine ecosystem – ultimately leading to an explosion of activity and new life. <h2>A 600-tonne problem</h2> Mass whale strandings happen fairly regularly – especially in Tasmania – yet no one really knows why. Days before this latest incident, <a href="https://www.abc.net.au/news/2022-09-20/sperm-whales-stranded-off-king-island-tasmania/101457406" target="_blank" rel="noopener">14 sperm whales</a> became stranded off King Island, northwest of Tasmania. And in 2020, about 470 pilot whales <a href="https://theconversation.com/like-trying-to-find-the-door-in-a-dark-room-while-hearing-your-relatives-scream-for-help-tasmanias-whale-stranding-tragedy-explained-146674" target="_blank" rel="noopener">became stranded</a> at Macquarie Harbour. While many were pulled out to sea, some of those carcasses washed up and were left to rot on the beach – an entirely natural process. However, pilot whales are big animals. Males weigh up to 2,300kg, which means they take a long time to decompose. The smell of two tonnes of rotting whale blubber soon becomes unbearable, so carcasses are frequently buried. This time around, authorities <a href="https://www.abc.net.au/news/2022-09-25/whale-carcasses-towed-out-to-sea-after-mass-stranding/101471166" target="_blank" rel="noopener">decided to tow</a> the dead animals out to sea. The ABC reported local salmon farm workers took almost 11 hours to dispose of 204 dead whales with a combined weight of between 500 and 600 tonnes. They were tied to a 400 metre-long rope and towed by boats for 40 kilometres, before being dropped into deep water in the Indian Ocean. Some carcasses may wash back to shore, but most are likely to disperse with the tides and currents. <h2>Shark bait? Probably not</h2> The big question is: what happens to all that whale mass dumped at sea? Initially, a dead whale tends to float to the surface as it begins to decompose and its innards expand with gas. As this happens, ocean scavengers such as sharks and seabirds are likely to feast on the remains. Some people <a href="https://www.abc.net.au/news/2019-04-14/do-buried-whale-carcasses-really-attract-sharks/10996512" target="_blank" rel="noopener">can be concerned</a> that whale carcasses attract sharks that might pose a risk to humans. Granted, encounters between sharks and humans, are <a href="https://theconversation.com/fatal-shark-attacks-are-at-a-record-high-deterrent-devices-can-help-but-some-may-be-nothing-but-snake-oil-150845" target="_blank" rel="noopener">on the rise</a> in Australia and elsewhere. But they’re still very rare. A <a href="https://parks.des.qld.gov.au/__data/assets/pdf_file/0024/167613/swim-humpback-whales-risks-sharks.pdf" target="_blank" rel="noopener">report</a> to the Western Australian government in 2012 found whale carcasses were a risk factors associated with shark attacks, and said caution should be exercised near a dead whale in the water. But the same report noted that of 26 shark attacks investigated, the highest number occurred more than a kilometre offshore. While there is no doubt <a href="https://doi.org/10.1016/j.gecco.2019.e00655" target="_blank" rel="noopener">sharks are attracted to dead whales</a>, the data is <a href="https://hakaimagazine.com/news/beached-whales-are-a-lure-for-hungry-sharks/" target="_blank" rel="noopener">not clear</a> on whether a whale carcass leads directly to an increase in shark attacks on people. Research <a href="https://www.sciencedirect.com/science/article/pii/S2351989419301854?via%3Dihub" target="_blank" rel="noopener">has shown</a> the likelihood of whale carcasses washing towards shore, where shark scavenging can be observed, is low. So as long as the carcass is taken far from shore and people keep their distance from it, the threat to humans from shark encounters appears to be exceedingly low. <h2>From death comes new life</h2> Inevitably, the whale carcass will start to sink. Most life in the ocean is found fairly close to the sea surface, so if the water is relatively shallow much of what’s left of the carcass will be quickly eaten by scavengers once it reaches the sea floor. But these carcasses have been disposed of in deep water. The deep ocean can be a barren place, where rich food sources are rare. So the appearance of a single whale carcass can supercharge an entire ecosystem. New life and activity can erupt around the dead animal in very little time. This process is known as “whale fall” and has been studied by scientists, sometimes using remotely operated vehicles. On the seafloor of the North Pacific, whale fall has been found to <a href="https://www.frontiersin.org/articles/10.3389/fevo.2022.885572/full" target="_blank" rel="noopener">support the survival</a> of at least 12,490 organisms of 43 species. Deep sea sharks will make the most of the carcass. <a href="https://www.youtube.com/watch?v=CZzQhiNQXxU" target="_blank" rel="noopener">A host of other animals</a> including hagfish, octopus, crabs, lobsters, worms and sea cucumbers will join in too. All the while bacteria work away quietly in the background. <a href="https://www.nhm.ac.uk/discover/what-happens-when-whales-die.html" target="_blank" rel="noopener">According to</a> Britain’s Natural History Museum, a single whale can provide animals with food for up to two years during the scavenging stage. Other animals and bacteria survive off the chemicals produced from the rotting carcass. These organisms, known as “chemotrophs” were thought to be unique to underwater volcanic vents, where they use hydrogen sulphide as the principal energy source. <a href="https://doi.org/10.1098/rspb.2016.2337" target="_blank" rel="noopener">Research</a> has shown a similar suite of animals recruit around dead and decaying whales – generating a completely independent ecosystem based on a gas that <a href="https://www.nhm.ac.uk/discover/what-happens-when-whales-die.html" target="_blank" rel="noopener">smells like rotten eggs</a>. Only a few organisms can break down the bones that remain, in a process that might take up to ten years. So take a moment to consider the effect of 204 whale falls in a small part of the ocean off Tasmania. Right now, they are probably generating interconnected marine metropolises, the likes of which are rarely seen. This article originally appeared on <a href="https://theconversation.com/about-200-dead-whales-have-been-towed-out-to-sea-off-tasmania-and-what-happens-next-is-a-true-marvel-of-nature-191340" target="_blank" rel="noopener">The Conversation</a>. Image: Twitter

Travel Trouble

Boat tragedy claims five lives after whale flips vessel

New details have emerged pertaining to the accident that involved a whale, which was understood to have flipped over a boat at Goose Bay, claiming the lives of five photographers near Kaikōura in New Zealand’s South Island. The fatal accident occurred at 10 am on a Saturday, when the whale breached directly underneath the boat causing the vessel to capsize. Six people were thrown overboard including the skipper; five others were left trapped and did not survive. According to their website, the 10 photographers from the Nature Photography Society had been planning the three-day field trip for months. Everyone made their way to the popular seaside village on Friday September 9, before setting out to photograph landscapes, seascapes and birdlife. The group embarked at 9 am in an 8.5m aluminium boat, leaving South Bay at Kaikōura and heading down the coastline to Goose Bay near the well-known twin road tunnels on State Highway 1. The three-hour charter had taken the group out on the water to capture photos of the snow-capped Kaikōura landscape in the background and the birdlife along the coast, with whale watching not even on the agenda. An hour later, the charter headed north towards Barneys Rock, a popular spot for photographers and tourists. As it motored slowly north it appears it was on the edge of the famous deep trench that is home to whales, where the canyon quickly drops away to a depth of 500 metres and as far down as 3km. The boat was about 500 m from shore when the emerged from directly beneath the boat, flipping the vessel, throwing the skipper and passengers into the water. The Transport Accident Investigation Commission is investigating, in conjunction with Maritime New Zealand and the police. Image: Getty

Travel Trouble

"So proud": Blue Wiggle's daughter joins the cast

The daughter of Blue Wiggle Anthony Field has shared she has joined the children's entertainment group as a dancer. Lucia Field, 17, made the announcement on her TikTok account, as she shared a throwback picture of her and her famous dad with Dorothy the Dinosaur. She wrote, "I never would've believed you if 16 years ago you told me I'd be here." She then shared a photo of her in a blue skivvy dancing in front of the giant Wiggles logo. The video, which was posted on the offical Wiggles account, was flooded with comments of people cheering on the new dance member. <div class="embed" style="font-size: 16px; box-sizing: inherit; margin: 0px; padding: 0px; border: 0px; vertical-align: baseline; outline: none !important;"><iframe class="embedly-embed" style="box-sizing: inherit; margin: 0px; padding: 0px; border-width: 0px; vertical-align: baseline; width: 610px; max-width: 100%; outline: none !important;" title="tiktok embed" src="https://cdn.embedly.com/widgets/media.html?src=https%3A%2F%2Fwww.tiktok.com%2Fembed%2Fv2%2F7132666717473344769&display_name=tiktok&url=https%3A%2F%2Fwww.tiktok.com%2F%40thewiggles%2Fvideo%2F7132666717473344769%3Fis_copy_url%3D1%26is_from_webapp%3Dv1%26lang%3Den&key=59e3ae3acaa649a5a98672932445e203&type=text%2Fhtml&schema=tiktok" width="340" height="700" frameborder="0" scrolling="no" allowfullscreen="allowfullscreen"></iframe></div> Anthony also commented, saying he was "so proud" of his daughter. Lucia graduated from high school in December last year, with her excited father sharing a photo to Instagram of them together at her formal. In addition to Lucia, Anthony is father to daughter Marie, 16, and son Antonio, 14, whom he shares with his wife of 18 years, Michaela Patisteas. Anthony joined The Wiggles in 1979 alongside retired members Murray Cook, Greg Page and Jeff Fatt. The trio were replaced by 'Yellow Wiggle' Emma Watkins, who left the group in October last year, 'Purple Wiggle' Lachlan Gillespie and 'Red Wiggle' Simon Pryce. Image credits: TikTok

Family & Pets

Warming oceans may force New Zealand’s sperm and blue whales to shift to cooler southern waters

The world’s oceans are absorbing more than <a href="https://www.un.org/en/climatechange/science/climate-issues/ocean-impacts" target="_blank" rel="noopener">90% of the excess heat and energy</a> generated by rising greenhouse gas emissions. But, as the oceans keep warming, rising sea temperatures generate unprecedented cascading effects that include the melting of polar ice, rising seas, marine heatwaves and ocean acidification. This in turn has profound impacts on marine biodiversity and the lives and livelihoods of coastal communities, especially in island nations such as New Zealand. In our latest <a href="https://www.sciencedirect.com/science/article/pii/S1470160X22007075?via%3Dihub" target="_blank" rel="noopener">research</a>, we focused on great whales – sperm and blue whales in particular. They are crucial for maintaining healthy marine ecosystems, but have limited options to respond to climate change: either adapt, die, or move to stay within optimal habitats. We used mathematical models to predict how they are likely to respond to warming seas by the end of the century. Our results show a clear southward shift for both species, mostly driven by rising temperatures at the sea surface. <h2>Computing the fate of whales</h2> Data on the local abundance of both whales species are <a href="https://www.int-res.com/abstracts/meps/v690/p201-217/" target="_blank" rel="noopener">deficient</a>, but modelling provides a powerful tool to predict how their range is likely to shift. We used a <a href="http://macroecointern.dk/pdf-reprints/AraujoNew2007.pdf" target="_blank" rel="noopener">combination of mathematical models</a> (known as correlative species distribution models) to predict the future range shifts of these whale species as a response to three future climate change scenarios of differing severity, as outlined by the Intergovernmental Panel on Climate Change (<a href="https://www.ipcc.ch/" target="_blank" rel="noopener">IPCC</a>). We applied these models, using the whales’ present distributions, to build a set of environmental “rules” that dictate where each species can live. Using climate-dependent data such as sea-surface temperature and chlorophyll A (a measure of phytoplankton growth), as well as static data such as water depth and distance to shore, we applied these rules to forecast future habitat suitability. We chose a scenario of “<a href="https://www.nature.com/articles/d41586-020-00177-3" target="_blank" rel="noopener">modest</a>” response to cutting greenhouse gas emissions (the IPCC’s mitigation strategy RCP4.5), which is the most likely given the current policies, and a worst-case scenario (no policy to cut emissions, RCP8.5), assuming the reality will likely be somewhere between the two. Our projections suggest current habitats in the ocean around the North Island may become unsuitable if sea-surface temperatures continue to rise. These range shifts become even stronger with increasing severity of climate change. For sperm whales, which are currently abundant off Kaikōura where they support eco-tourism businesses, the predicted distribution changes are even more evident than for blue whales, depending on the climate change scenario. While our results do not predict an overall reduction in suitable habitat that would lead to local extinctions, the latitudinal range shifts are nevertheless bound to have important ecological consequences for New Zealand’s marine ecosystems and the people who depend on them. <h2>How whales maintain ecosystems</h2> Great whales are marine ecosystem engineers. They modify their habitats (or create new ones), to suit their needs. In fact, these activities create conditions that other species rely on to survive. They engineer their environment on several fronts. By feeding in one place and releasing their faeces in another, whales convey minerals and other nutrients such as nitrogen and iron from the deep water to the surface, as well as across regions. This process, known as a “<a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0013255" target="_blank" rel="noopener">whale pump</a>”, makes these nutrients available for phytoplankton and other organisms to grow. This is very important because phytoplankton contributes about <a href="https://education.nationalgeographic.org/resource/plankton-revealed" target="_blank" rel="noopener">half of all oxygen to the atmosphere</a> and also captures <a href="https://www.imf.org/Publications/fandd/issues/2019/12/natures-solution-to-climate-change-chami" target="_blank" rel="noopener">about 40% of all released carbon dioxide</a>. By helping the growth of phytoplankton, whales indirectly contribute to the <a href="https://theconversation.com/tiny-plankton-drive-processes-in-the-ocean-that-capture-twice-as-much-carbon-as-scientists-thought-136599" target="_blank" rel="noopener">natural ocean carbon sink</a>. On top of this, each great whale accumulates about <a href="https://www.arcticwwf.org/the-circle/stories/protecting-the-earth-by-protecting-whales/" target="_blank" rel="noopener">33 tonnes of carbon dioxide in their body</a>, which they take to the ocean floor when they die and their carcass sinks. <figure></figure> Ultimately, the impact of warming oceans on whale distribution is an additional stress factor on ecosystems already under pressure from wider threats, including acidification, pollution and over-exploitation. <h2>A way forward to help whales</h2> Sperm whales are the largest toothed whales (odontocetes) and deep-diving apex predators. They primarily feed on squid and fish that live near the bottom of the sea. Blue whales are baleen whales (mysticetes) and filter small organisms from the water. They feed at the surface on zooplankton, particularly dense krill schools along coastlines where cold water from the deep ocean rises toward the surface (so-called <a href="https://oceanservice.noaa.gov/facts/upwelling.html" target="_blank" rel="noopener">upwelling areas</a>). These differences in feeding habits lead to divergent responses to ocean warming. Blue whales show a more distinct southerly shift than sperm whales, particularly in the worst-case scenario, likely because they feed at the surface where ocean warming will be more exacerbated than in the deep sea. Both species have important foraging grounds off New Zealand which may be compromised in the future. Sperm whales are currently occurring regularly off Kaikōura, while blue whales forage in the South Taranaki Bight. Despite these ecological differences, our results show that some future suitable areas around the South Island and offshore islands are common to both species. These regions could be considered sanctuaries for both species to retreat to or expand their habitat in a warming world. This should warrant <a href="https://environment.govt.nz/assets/Publications/Files/Environmental-Report-Card-Marine-Areas-with-Legal-protection_0.pdf" target="_blank" rel="noopener">increased protection of these areas</a>. This article originally appeared on <a href="https://theconversation.com/warming-oceans-may-force-new-zealands-sperm-and-blue-whales-to-shift-to-cooler-southern-waters-188522" target="_blank" rel="noopener">The Conversation</a>. Image: Shutterstock

Travel Trouble

Landslide victim identified

The victim of the Blue Mountains landslip has been identified as Mehraab Nazir, a British Lawyer who was holidaying in Australia, and his 9-year-old son. Both bodies were recovered on Tuesday the 5th of April. Mr Nazir, 49, had been on a hike with his family in the Wentworth Pass area of the Blue Mountains, a national park west of Sydney in NSW on Monday, when the incident occurred. Mr Nazir's wife remains in a critical condition in an intensive care unit, while another son, 14, has undergone surgery and is in a stable condition. His 15-year-old daughter walked from the scene and is under observation in hospital. Mr Nazir was a partner at law firm Watson Farley & Williams and was based in its Singapore office. "It is with the greatest sadness that we must confirm that our dear friend and colleague Mehraab Nazir, a partner in our Singapore office, tragically lost his life in a landslide in Australia earlier this week alongside his young son," the company said in a statement. "We will be remembering and honouring Mehraab, however, with the surviving members of the family in serious conditions or in shock, we ask that you respect their privacy and grief at this incredibly difficult time." NSW Premier Dominic Perrottet is seeking advice as to whether the walking track should have been open given recent heavy rain in area. "Obviously, the Blue Mountains is a place where people love to go trekking. It's one of the wonders of the world but when those tragedies occur it would be remiss of any government not to act." Following the removal of the bodies, the NSW Department of Environment and Heritage announced that the area was closed to the public until further notice and a "comprehensive review" would be undertaken. The department said it had a program to assess geotechnical risks and maintain the safety of walking tracks and that the walking track was inspected in the days leading up to the landslip. Image: Nine News

News

Young girl's desperate walk to safety after deadly landslide

The victims of a horror landslide in the NSW Blue Mountains have been identified as a British family of five holidaying in Australia. The father, 49, and his nine-year-old son died at the scene after the family was caught in a landslide on a Wentworth Falls walking track at around 1.30pm on Monday afternoon. The 50-year-old mother and 14-year-old son, both found in critical condition, were winched out that evening and taken to hospital. They remain in critical condition. The couple’s 15-year-old daughter escaped injury, with NSW Police saying she was walked from the location by emergency services and treated for shock. It is understood the young girl also assisted rescuers on the ground, as reported by <a href="https://www.9news.com.au/national/blue-mountains-wentworth-falls-landslide-hikers-trapped/18dff055-80de-4549-a5c5-371704d0e7a0" target="_blank" rel="noopener">9News</a>. Police have confirmed the family were visiting from the United Kingdom, and that the British consulate is assisting with the incident. With the dense bush making the rescue even more difficult, two police helicopters and special operations paramedics were among those enlisted to help. Seven road crews and two road crews were also dispatched to the scene by NSW Ambulance. “Unfortunately there’s been a landslip while they were bushwalking and a man and a boy have passed away,” NSW Police Detective Acting Superintendent John Nelson told reporters. “In terms of the site, it’s extremely dangerous and unstable. “Two other patients are critical, with head and abdominal injuries, requiring sedation before extraction.” NSW Ambulance superintendent Stewart Clarke addressed the incident on Monday night, telling the media it was “absolutely heartbreaking”. “This is absolutely heartbreaking for all involved and a truly tragic ending to what I’m sure was meant to be a pleasant day out,” he said. “It is terribly sad to have lost two lives here today and my heart goes out to the families and the survivors of this horrific ordeal who have witnessed what is certainly a traumatic event.” Trish Doyle, the Labor MP for the Blue Mountains, and the Wentworth Falls City - Blue Mountains Council Deputy Mayor, Romola Hollywood, both shared their condolences to the family online. “My heart goes out to this family, their friends and community, on behalf of ours,” Ms Doyle commented on a <a href="https://www.facebook.com/nswpoliceforce/posts/352525600253199" target="_blank" rel="noopener">post</a> from NSW Police about the incident. “I extend the deepest respect to our Blue Mountains Police Rescue, Special Ops Paramedics & all first responders - for your traumatic but crucial work. Thank you.” “Our hearts go out to the family in these tragic circumstances. So incredibly sad,” Ms Hollywood also commented. “And we hope the woman and boy in hospital make a strong and speedy recovery. “Deepest thanks to our first responders for your amazing work in difficult circumstances and thanks to all who support them too. Take care everyone too.” The devastating incident comes after weeks of heavy rain across the state forced the National Parks and Wildlife Service to close several popular tracks due to “flood damage and ongoing rockfall risk”. All tracks in the area have been closed since the incident. A coroner’s report will be prepared for the man and young boy, as Blue Mountains police return to the area to retrieve their bodies. Image: 9News

News

How to roll away all your sore back blues

We all know that working a 9-5 and sitting all day leads to various health problems. For me personally, it manifests itself through chronic back pain and tight hip flexors. Fortunately, there's a way for me to soothe these aches and pains from home. I've been using <a href="https://www.therabody.com/anz/en-nz/wave-roller-anz.html" target="_blank" rel="noopener">Therabody's Wave Roller</a> for the past week, and my back pain has significantly reduced. The Wave Roller is a Bluetooth-enabled vibrating foam roller that proposes benefits like increasing blood flow, enhancing mobility, and releasing tension. You can connect the roller to a free Therabody App, where you can find personalised recovery routines targeting all parts of your body, along with instructions and how-tos. Here are some of my initial thoughts. <img src="https://oversixtydev.blob.core.windows.net/media/2022/03/03_RizWaveroller01.jpg" alt="Therabody Wave Roller in use" width="1280" height="720" /> My personal favourites are the mid back and upper back routines, which take up to 5 minutes to complete. Since most of the tension is in my upper body, which causes my lower back to overcompensate, I've decided to focus on these areas. The foam roller comes with a bag and charger and is reasonably lightweight, so you could easily carry it around. The foam itself is a high-density foam, and I like that you can customise the intensity and frequency of the vibrations. There are five customised vibration settings, with 5 being the highest and most intense. I could only handle up to the third setting or the medium-intensity. But, the higher the intensity, the more noise it produces, although I didn't mind it so much for the other benefits it provided. The routines are easy to follow, with pictures demonstrating each move and seamless transitions from one exercise to the next. I also liked that the intensity of the vibrations automatically changes according to what's best for that particular movement. I would have loved seeing a video demonstration before each routine, as I wasn't sure if I was doing some of the exercises quite correctly. I also found that the Wave Roller can be slippery to use in some movements, like when I tried it on my rotator cuffs. Despite this, the Wave Roller is a pleasure to use after a long day, when my muscles are the most tense. I find it a helpful tool in managing pain, soreness, and releasing tension. Although it is on the higher end of the price range compared to other foam rollers, I think it's worth the investment. The technology is advanced, and you can personalise the areas you want to work on using the step-by-step programs in their app. It also feels like you're getting a massage, but it's more personalised and customisable. If using the app seems intimidating or too complicated, you can use the Wave Roller by itself and adjust the intensity using the + and - buttons. <img src="https://oversixtydev.blob.core.windows.net/media/2022/03/02_RizWaveroller.jpg" alt="Therabody Wave Roller" width="1280" height="720" /> In summary, here are the pros and cons to consider if you're thinking of purchasing one for yourself. Pros: <ul> <li>Relieves soreness and muscle tension</li> <li>Variety of settings for the vibrations</li> <li>App integration </li> <li>Personalised programs that are quick and easy to follow</li> <li>3-hour battery life and it doesn’t take too long to charge</li> </ul> Cons: <ul> <li>The cost (RRP AU$249), but worth every penny! </li> <li>Medium to High setting intense and pretty noisy </li> <li>Depending on the exercise you do it can be quite slippery</li> <li>Video demonstrations before each exercise would be even better </li> </ul> The Wave Roller series is available via the <a href="https://www.therabody.com/anz/en-nz/home" target="_blank" rel="noopener">Therabody website</a>. Images: Rizna Mutmainah & Therabody

Body

Man charged with murder of missing 9-year-old

Image: NSW Police A man has been charged with murder after nine-year-old Charlise Mutten disappeared from the Blue Mountains last Thursday. Police have arrested a 32-year-old at a unit in Surry Hills, in central Sydney, at about 8:30 pm on Tuesday evening, and he is due to appear in Central Local Court late on Wednesday. NSW Police established Strike Force Buena to investigate Charlise's disappearance. Last Friday morning she was reported missing, officers last night carried out a search at Colo River, about an hour from the Blue Mountains. It is unclear if anything was found. The young girl was a student from Tweed Heads Public School, who lived with her grandmother in Coolangatta, Queensland. She was holidaying in the Blue Mountains with her mother, Kallista Mutten. The pair were staying at a wedding and function venue when she disappeared last Thursday afternoon. Ms Mutten reported her daughter missing the next morning but police haven't revealed whether she was formally interviewed since she was hospitalised for a medical condition. NSW homicide detectives joined the investigation on Monday. Volunteers helping with the search were instructed to call out Charlise's name loudly and told to flag any evidence with police before touching it. They were also told to search for anything out of the ordinary including footprints or bike tracks. A large-scale search had been underway in the area since late last week, with a hundred emergency services staff on the ground and in the air. Police divers spent hours searching the Hawkesbury River in Windsor, with Rural Fire Service (RFS) volunteers also joined the search. On Monday morning police searched a cubby house on a neighbouring property but found nothing.

News

Blue-sky thinking: net-zero aviation is more than a flight of fantasy

As international air travel rebounds after COVID-19 restrictions, greenhouse gas emissions from aviation are expected to rise dramatically – and with it, scrutiny of the industry’s environmental credentials. Aviation emissions have almost <a href="https://www.newscientist.com/article/2253626-aviations-contribution-to-global-warming-has-doubled-since-2000/">doubled since 2000</a> and in 2018 reached <a href="https://ourworldindata.org/co2-emissions-from-aviation">one billion tonnes</a>. Climate Action Tracker rates the industry’s climate performance as <a href="https://climateactiontracker.org/sectors/aviation/">critically insufficient</a>. As the climate change threat rapidly worsens, can aviation make the transition to a low-carbon future – and perhaps even reach net-zero emissions? The significant technological and energy disruption on the horizon for the industry suggests such a future is possible. But significant challenges remain. Achieving a net-zero aviation sector will require a huge collaborative effort from industry and government – and consumers can also play their part. <iframe width="440" height="260" src="https://www.youtube.com/embed/nW6J989UBhA?wmode=transparent&start=0" frameborder="0" allowfullscreen=""></iframe> <h2>Build back better</h2> The aviation sector’s progress in cutting emissions has been disappointing to date. For example, in February last year, <a href="https://theconversation.com/major-airlines-say-theyre-acting-on-climate-change-our-research-reveals-how-little-theyve-achieved-127800">research</a> on the world’s largest 58 airlines found even the best-performing ones were not doing anywhere near enough to cut emissions. Most recently, at the COP26 climate change summit in Glasgow, the industry merely reasserted a commitment to a plan known as the <a href="https://www.icao.int/environmental-protection/CORSIA/Pages/default.aspx">Carbon Offsetting and Reduction Scheme for International Aviation</a>. The scheme relies on carbon offsetting, which essentially pays another actor to reduce emissions on its behalf at lowest cost, and doesn’t lead to absolute emissions reduction in aviation. The scheme also encourages alternative cleaner fuels, but the level of emissions reduction between fuels varies considerably. Governments have generally failed to provide strong leadership to help the aviation sector to reduce emissions. This in part is because pollution from international aviation is not counted in the emissions ledger of any country, leaving little incentive for governments to act. Aviation is also a complex policy space to navigate, involving multiple actors around the world. However, COVID-19 has significantly jolted the aviation and travel sector, presenting an opportunity to build back better – and differently. Griffith University recently held a <a href="https://www.griffith.edu.au/institute-tourism/our-research/rethinking-aviation/aviation-reimagined-2021?fbclid=IwAR3Hd8xLJkEWMaHae8sho1MiSfV6TzbPbf30vo2fbJ0CHMg-xdvywNCmZbU">webinar series</a> on decarbonising aviation, involving industry, academic and government experts. The sessions explored the most promising policy and practical developments for net-zero aviation, as well as the most significant hurdles. <img src="https://images.theconversation.com/files/437570/original/file-20211214-25-1rc1cnc.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" alt="passengers queue at airport" /> COVID-19 has significantly jolted the aviation sector. Steven Senne/AP <h2>Nations soaring ahead</h2> Some governments are leading the way in driving change in the aviation industry. For example, as a result of <a href="https://www.government.se/495f60/contentassets/883ae8e123bc4e42aa8d59296ebe0478/the-swedish-climate-policy-framework.pdf">government policy</a> to make Sweden climate-neutral by 2045, the Swedish aviation industry developed a <a href="https://fossilfrittsverige.se/en/roadmap/the-aviation-industry/#:%7E:text=The%20strategic%20objective%20for%202030,line%20with%20the%20Government%27s%20goals">roadmap</a> for fossil-free domestic flights by 2030, and for all flights originating from Sweden to be fossil-free by 2045. Achieving fossil-free flights requires replacing jet fuel with alternatives such as sustainable fuels or electric and hydrogen propulsion. The European Union plans to <a href="https://ec.europa.eu/commission/presscorner/detail/en/qanda_21_3662">end current tax exemptions</a> for jet fuel and introduce measures to <a href="https://www.eurocontrol.int/article/eus-fit-55-package-what-does-it-mean-aviation">accelerate</a> the uptake of sustainable fuels. The United Kingdom is finalising its strategy for <a href="https://www.gov.uk/government/consultations/achieving-net-zero-aviation-by-2050">net-zero aviation</a> by 2050 and a public body known as UK Research and Innovation is <a href="https://www.ukri.org/our-work/our-main-funds/industrial-strategy-challenge-fund/future-of-mobility/future-flight-challenge/">supporting</a> the development of new aviation technologies, including hybrid-electric regional aircraft. Australia lacks a strategic framework or emissions reduction targets to help transition the aviation industry. The <a href="https://www.infrastructure.gov.au/infrastructure-transport-vehicles/aviation/emerging-aviation-technologies/drones/eatp">Emerging Aviation Technology Program</a> seeks to reduce carbon emissions, among other goals. However, it appears to have a strong focus on freight-carrying drones and <a href="https://www.greenbiz.com/article/7-urban-air-mobility-companies-watch">urban air vehicles</a>, rather than fixed wing aircraft. <img src="https://images.theconversation.com/files/437569/original/file-20211214-13-lsswi6.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" alt="plane taking off" /> Some governments are leading the way in driving change in the aviation industry. Zhao Xiaojun/AP <h2>Building tomorrow’s aircraft</h2> Low-emissions aircraft technology has developed substantially in the last five years. Advancements include electric and hybrid aircraft (powered by hydrogen or a battery) – such as that being developed by <a href="https://www.airbus.com/en/innovation/zero-emission/hydrogen/zeroe">Airbus</a>, <a href="https://www.rolls-royce.com/innovation/accel.aspx">Rolls Royce</a> and <a href="https://www.zeroavia.com/">Zero Avia</a> – as well as <a href="https://boeing.mediaroom.com/2021-07-14-Boeing-and-SkyNRG-Partner-to-Scale-Sustainable-Aviation-Fuels-Globally">sustainable aviation fuels</a>. Each of these technologies can reduce carbon emissions, but only battery and hydrogen electric options significantly reduce non-CO₂ climate impacts such as oxides of nitrogen (NOx), soot particles, oxidised sulphur species, and water vapour. For electric aircraft to be net-zero emissions, they must be powered by renewable energy sources. As well as being better for the planet, electric and hydrogen aircraft are likely to have <a href="https://www.zeroavia.com/">lower</a> energy and maintenance <a href="https://www.scientificamerican.com/article/electric-aviation-could-be-closer-than-you-think/">costs</a> than conventional aircraft. This decade, we expect a rapid emergence of electric and hybrid aircraft for short-haul, commuter, air taxi, helicopter and general flights. Increased use of sustainable aviation fuel is also likely. Although electric planes are flying, commercial operations are not expected until at least 2023 as the aircraft must undergo rigorous testing, safety and certification. <img src="https://images.theconversation.com/files/437571/original/file-20211214-23-1clsep1.jpg?ixlib=rb-1.1.0&q=45&auto=format&w=754&fit=clip" alt="A solar powered aircraft prototype flies in mountainous terrain" /> Electric planes exist, but the route to commercialisation is long. Pictured: a solar powered aircraft prototype flies near the France-Italy border. Laurent Gillieron/EPA <h2>Overcoming turbulence</h2> Despite real efforts by some industry leaders and governments towards making aviation a net-zero industry, significant strategic and practical challenges remain. Conversion to the commercial mainstream is not happening quickly enough. To help decarbonise aviation in Australia, industry and government should develop a clear strategy for emissions reduction with interim targets for 2030 and 2040. This would keep the industry competitive and on track for net-zero emissions by 2050. Strategic attention and action is also needed to: <ul> <li> advance aircraft and fuel innovation and development </li> <li> update regulatory and certification processes for new types of aircraft </li> <li> enhance production and deployment of new aviation fuels and technologies </li> <li> reduce fuel demand through efficiencies in route and air traffic management </li> <li> create “greener” airport operations and infrastructure </li> <li> build capability with pilots and aerospace engineers. </li> </ul> The emissions created by flights and itineraries can <a href="https://theicct.org/sites/default/files/publications/variation-aviation-emissions-itinerary-jul2021-1.pdf">vary substantially</a>. Consumers can do their part by opting for the lowest-impact option, and offsetting the emissions their flight creates via a <a href="https://theconversation.com/flying-home-for-christmas-carbon-offsets-are-important-but-they-wont-fix-plane-pollution-89148">credible program</a>. Consumers can also choose to fly only with airlines and operators that have committed to net-zero emissions. Net-zero aviation need not remain a flight of fantasy, but to make it a reality, emissions reduction must be at the heart of aviation’s pandemic bounce-back.<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/171940/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/emma-rachel-whittlesea-1280917">Emma Rachel Whittlesea</a>, Senior Research Fellow, <a href="https://theconversation.com/institutions/griffith-university-828">Griffith University</a> and <a href="https://theconversation.com/profiles/tim-ryley-1253269">Tim Ryley</a>, Professor and Head of Griffith Aviation, <a href="https://theconversation.com/institutions/griffith-university-828">Griffith University</a> 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/blue-sky-thinking-net-zero-aviation-is-more-than-a-flight-of-fantasy-171940">original article</a>. Image: Shutterstock

Domestic Travel

Over 60

News

Shop

Catalogues

Travel

Health

Lifestyle

Finance

Entertainment

Property

Information

Keep up to date

Search

Yes, blue light from your phone can harm your skin. A dermatologist explains

Incredible moment huge whale body slams boat

People in the world’s ‘blue zones’ live longer – their diet could hold the key to why

Do blue-light glasses really work? Can they reduce eye strain or help me sleep?

Why can’t we just tow stranded whales and dolphins back out to sea?

"We strongly object": Cruise line passengers witness mass whale hunt

How to beat the retirement blues

"I fell for it!": Boys in blue crash gender reveal party

Aussie author of "Puberty Blues" dies at 64

Hill Street Blues star passes away

How to make the most of your hard-earned savings

About 200 dead whales have been towed out to sea off Tasmania – and what happens next is a true marvel of nature

Boat tragedy claims five lives after whale flips vessel

"So proud": Blue Wiggle's daughter joins the cast

Warming oceans may force New Zealand’s sperm and blue whales to shift to cooler southern waters

Landslide victim identified

Young girl's desperate walk to safety after deadly landslide

How to roll away all your sore back blues

Man charged with murder of missing 9-year-old

Blue-sky thinking: net-zero aviation is more than a flight of fantasy