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Matcha is having a moment. What are the health benefits of this green tea drink?

<p><em><a href="https://theconversation.com/profiles/evangeline-mantzioris-153250">Evangeline Mantzioris</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a></em></p> <p>Matcha has experienced a surge in popularity in recent months, leading to reports of <a href="https://www.smh.com.au/goodfood/sydney-eating-out/global-matcha-shortage-hits-australia-as-skyrocketing-popularity-rivals-coffee-20241101-p5kn6v.html">global shortages</a> and price increases.</p> <p>If you haven’t been caught up in the craze, matcha is a powdered version of green tea. On a cafe menu you might see a hot or iced matcha latte, or even a matcha-flavoured cake or pastry. A quick google brings up <a href="https://www.foodandwine.com/tea/matcha-tea/matcha-recipes">countless recipes</a> incorporating matcha, both sweet and savoury.</p> <p>Retailers and cafe owners <a href="https://www.smh.com.au/goodfood/sydney-eating-out/global-matcha-shortage-hits-australia-as-skyrocketing-popularity-rivals-coffee-20241101-p5kn6v.html">have suggested</a> the main reasons for matcha’s popularity include its “instagrammable” looks and its purported health benefits.</p> <p>But what are the health benefits of matcha? Here’s what the evidence says.</p> <h2>First, what is matcha?</h2> <p><a href="https://www.mdpi.com/1420-3049/26/1/85">Matcha</a> is a finely ground powder of green tea leaves, which come from the plant <em>Camellia sinensis</em>. This is the same plant used to make green and black tea. However, the <a href="https://naokimatcha.com/blogs/articles/how-matcha-is-made-in-japan">production process</a> differentiates matcha from green and black tea.</p> <p>For matcha, the tea plant is grown in shade. Once the leaves are harvested, they’re steamed and dried and the stems are removed. Then the leaves are carefully ground at controlled temperatures to form the powder.</p> <p>The <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC6571865/">production process</a> for green tea is simpler. The leaves are picked from the unshaded plants, heated and then dried. We then steep the dried leaves in hot water to get tea (whereas with matcha the whole leaf is consumed).</p> <p>With black tea, after the leaves are picked they’re exposed to air, which leads to oxidation. This makes the leaves black and gives the tea a different flavour.</p> <h2>A source of phytonutrients</h2> <p>Phytonutrients are <a href="https://theconversation.com/phytonutrients-can-boost-your-health-here-are-4-and-where-to-find-them-including-in-your-next-cup-of-coffee-132100">chemical compounds found in plants</a> which have a range of benefits for human health. Matcha contains several.</p> <p>Chlorophyll gives plants such as <em>Camellia sinensis</em> their green colour. There’s some evidence chlorophyll may have <a href="https://www.mdpi.com/2223-7747/12/7/1533">health benefits</a> – including anti-inflammatory, anti-cancer and anti-obesity effects – due to its antioxidant properties. Antioxidants neutralise free radicals, which are unstable molecules that harm our cells.</p> <p>Theanine has been shown to <a href="https://www.mdpi.com/2504-3900/91/1/32">improve sleep</a> and <a href="https://link.springer.com/article/10.1007/s11130-019-00771-5?crsi=662497574&amp;cicada_org_src=healthwebmagazine.com&amp;cicada_org_mdm=direct">reduce stress and anxiety</a>. The only <a href="https://www.sciencedirect.com/topics/medicine-and-dentistry/theanine">other known</a> dietary source of theanine is mushrooms.</p> <p>Caffeine is a phytonutrient we know well. Aside from increasing alertness, caffeine has also demonstrated <a href="https://www.tandfonline.com/doi/full/10.1080/10408398.2022.2074362?casa_token=ADALIs6M3iAAAAAA%3AXpY35se0zLddAEIbZAaeCcDaNWm94s2WJaDHfXDRvVZgYq_xTxsCFuvtrtNXMXAL9uNIvLlYzO30aA#abstract">antioxidant effects</a> and some protection against a range of chronic and neurodegenerative diseases. However, too much caffeine can have negative side effects.</p> <p>Interestingly, shading the plants while growing appears to <a href="https://scijournals.onlinelibrary.wiley.com/doi/pdfdirect/10.1002/jsfa.9112?casa_token=KxVD9i9p4BsAAAAA:OwGTauXFHAndyJkam8WuXrmGQ2k1kaSRu5pOqJOrhSyRSeWkDwdrI23qaD5WVH1HGqZLFdsjP9ZTvolw">change the nutritional composition</a> of the leaf and may lead to higher levels of these phytonutrients in matcha compared to green tea.</p> <p>Another compound worth mentioning is called catechins, of which there are several different types. Matcha powder similarly has <a href="https://theconversation.com/matcha-tea-what-the-current-evidence-says-about-its-health-benefits-202782">more catechins</a> than green tea. They are strong antioxidants, which <a href="https://link.springer.com/article/10.1186/s41702-020-0057-8">have been shown</a> to have protective effects against bacteria, viruses, allergies, inflammation and cancer. Catechins <a href="https://www.sciencedirect.com/topics/medicine-and-dentistry/catechin#:%7E:text=Catechin%20is%20naturally%20present%20in,containing%20many%20catechins%20%5B130%2C131%5D.">are also found</a> in apples, blueberries and strawberries.</p> <h2>What are the actual health benefits?</h2> <p>So we know matcha contains a variety of phytonutrients, but does this translate to noticeable health benefits?</p> <p>A review published in 2023 identified only <a href="https://www.sciencedirect.com/science/article/pii/S2665927122002180">five experimental studies</a> that have given matcha to people. These studies gave participants about 2–4g of matcha per day (equivalent to 1–2 teaspoons of matcha powder), compared to a placebo, as either a capsule, in tea or in foods. Matcha decreased stress and anxiety, and improved memory and cognitive function. There was no effect on mood.</p> <p>A <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0309287">more recent study</a> showed 2g of matcha in older people aged 60 to 85 improved sleep quality. However, in <a href="https://www.mdpi.com/2072-6643/16/17/2907">younger people</a> aged 27 to 64 in another study, matcha had little effect on sleep.</p> <p>A <a href="https://link.springer.com/article/10.1007/s11130-022-00998-9">study in people with obesity</a> found no difference in the weight loss observed between the matcha group and the control group. This study did not randomise participants, and people knew which group they had been placed in.</p> <p>It could be hypothesised that given you consume all of the leaf, and given levels of some phytonutrients may be higher due to the growing conditions, matcha may have more nutritional benefits than green tea. But to my knowledge there has been no direct comparison of health outcomes from green tea compared to matcha.</p> <h2>There’s lots of evidence for green tea</h2> <p>While to date a limited number of studies have looked at matcha, and none compared matcha and green tea, there’s quite a bit of research on the health benefits of drinking green tea.</p> <p>A <a href="https://www.sciencedirect.com/science/article/pii/S0944711317300867?casa_token=dpbAEQQ7Is4AAAAA:U6aggqZM_G0KJ8hkhx0TGSvQywr4utlgKzwUnUj9x5t9eWd-FKENjbTvUv6s4TBTaPYrob-qQkk">systematic review of 21 studies</a> on green tea has shown similar benefits to matcha for improvements in memory, plus evidence for mood improvement.</p> <p>There’s also evidence green tea provides other health benefits. Systematic reviews have shown green tea leads to <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/ptr.6697?casa_token=1eAbmeGillYAAAAA%3ABNGBB6EuRFXIDWHgsa7E798wfC0MQK2r3yOmAlFzR2sxyD9Xt837VoCel0l6Tsh3RRO19t-YUm1GqO7Y">weight loss in people with obesity</a>, lower levels of <a href="https://link.springer.com/article/10.1186/s12937-020-00557-5">certain types of cholesterol</a>, and <a href="https://journals.lww.com/md-journal/fulltext/2020/02070/Effect_of_green_tea_supplementation_on_blood.36.aspx/1000">reduced blood pressure</a>. Green tea may also <a href="https://www.nature.com/articles/s41430-020-00710-7">lower the risk of certain types of cancer</a>.</p> <p>So, if you can’t get your hands on matcha at the moment, drinking green tea may be a good way to get your caffeine hit.</p> <p>Although the evidence on green tea provides us with some hints about the health benefits of matcha, we can’t be certain they would be the same. Nonetheless, if your local coffee shop has a good supply of matcha, there’s nothing to suggest you shouldn’t keep enjoying matcha drinks.</p> <p>However, it may be best to leave the matcha croissant or cronut for special occasions. When matcha is added to foods with high levels of added sugar, salt and saturated fat, any health benefits that could be attributed to the matcha may be negated.<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/242775/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /></p> <p><em><a href="https://theconversation.com/profiles/evangeline-mantzioris-153250">Evangeline Mantzioris</a>, Program Director of Nutrition and Food Sciences, Accredited Practising Dietitian, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>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/matcha-is-having-a-moment-what-are-the-health-benefits-of-this-green-tea-drink-242775">original article</a>.</em></p>

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Morbid reason why cruise ships throw "free ice cream parties" on board

<p>Dara Starr Tucker, a former cruise ship employee has shared the morbid reason why they throw “free ice cream parties” on board.</p> <p>Tucker, a singer who spent six months living on a cruise ship in the Mediterranean and the Caribbean 10 years ago, shared what life was like at sea. </p> <p>In one of her latest videos, she answered one of her follower's question asking whether it was true that if cruise staff started giving away ice cream, it meant that they needed more freezer space for a body.</p> <p>“This is unfortunately often true,” she said.</p> <p>“If the crew suddenly makes a bunch of ice cream available to passengers, ‘Free ice cream party’, it is often because more people have died on the ship than they have room for in the morgue.”</p> <p>She said that most large ships are legally required to maintain a morgue and carry body bags in the event a passenger dies mid-journey and added that she “thankfully” didn't have to deal with the "morbid stuff". </p> <p>“But we were friends with some crew members who did deal with it and they said maybe four to 10 people die every cruise,” she claimed.</p> <p>“There are a lot of older people on ships, and often (out of) a ship that carried maybe 2500 to 3000 passengers on a typical cruise, four to 10 people would die.</p> <p>“So the morgue, I believe they said held about seven people, and if more than seven people died on that particular ship, they would have to start moving bodies to the freezer.”</p> <p>She claimed that if employees would have to "make room for the extra bodies" in the freezer, they would have to take out everything including ice cream. </p> <p>Her video has been viewed over 2.3 million times, with many other cruise ship employees confirming her claims. </p> <p>“Cruise ship medic here. Can confirm the morgue and ice cream correlation,” one said.</p> <p>“Former sailor here — yes, it is accurate. Sometimes space needs to be made in the freezer," another added. </p> <p><em>Image: TikTok</em></p>

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Should you be worried about the amount of coffee or tea you drink?

<p>Before you reach for that cup of coffee or tea, have you ever thought about whether that caffeinated beverage is <a href="https://cosmosmagazine.com/health/body-and-mind/debunks-vices-coffee-caffeine/">good or bad for you</a>?</p> <p><iframe title="Vices: Is coffee good or bad for you?" src="https://omny.fm/shows/debunks/vices-is-coffee-good-or-bad-for-you/embed?style=Cover" width="100%" height="180" frameborder="0"></iframe></p> <p>Most of us will drink coffee or tea each day.</p> <p>It helps keep us alert, especially in a world of the nine-to-five grind. Some workers rely on caffeine to get them through shift work and night shifts.</p> <p>Many, like me, would just collapse in a heap if it weren’t for that liquid black gold to keep us peppy in the morning.</p> <h2 class="wp-block-heading">What is caffeine?</h2> <p>To get a better picture of how coffee or tea affects us, let’s examine the active ingredient: <a href="https://cosmosmagazine.com/podcast/huh-science-explained-stirring-the-science-of-caffeine/">caffeine</a>.</p> <p>Caffeine is a <a href="https://www.betterhealth.vic.gov.au/health/healthyliving/caffeine" target="_blank" rel="noopener">drug</a>. It’s a white, odourless substance known to chemists as 1,3,7-trimethylxanthine and is made up of 8 carbon, 10 hydrogen, 4 nitrogen and 2 oxygen atoms.</p> <p>Caffeine occurs naturally in coffee beans, cocoa beans, kola nuts, and tea leaves.</p> <p>It is an adenosine antagonist, blocking the A1, A2A, and A2B receptors in the brain and body to promote wakefulness. Normally, adenosine (a chemical compound with a similar 3D structure to caffeine) binds to its receptors, slowing neural activity and making you sleepy.</p> <p>When caffeine, instead, binds to the receptors, adenosine is blocked and brain activity speeds up, making you feel more alert.</p> <h2 class="wp-block-heading">History lesson</h2> <p>Tea and coffee are the most common way for humans to get their caffeine fix.</p> <p>Drinks made using coffee beans date back more than a thousand years to the coffee forests of the horn of Africa.</p> <p>Legend says that, around 800 CE, an Ethiopian goat herder named Kaldi noticed his goats were energetic and didn’t sleep when they ate the coffee beans. Coffee then spread eastward to the Arabian Peninsula, reaching Yemen in the 15th century, and Egypt, Syria, Persia and Turkey in the 1500s. From their it made it to Europe and eventually the whole world.</p> <p>But caffeine is also present in other beverages like tea, cola and even some foods like chocolate.</p> <h2 class="wp-block-heading">Is it bad for you?</h2> <p>Given how prevalent the drug is, are there negative side effects we should be worried about?</p> <p>For one thing, it is an addictive substance. And the more you drink, the more you need.</p> <p>“Our body tends to adjust to a new level of consumption,” Kitty Pham, a PhD candidate at the University of South Australia and expert in nutritional and genetic epidemiology, tells <em>Cosmos</em>. “Your body does develop a tolerance to the caffeine. So, you start to need to drink more and more to feel the same effect as before.”</p> <p>Caffeine can also act as an anxiogenic – a substance that can trigger heightened levels of anxiety.</p> <p>Pham notes some risks associated with too much caffeine consumption over a long period of time.</p> <p>“Greater than 6 cups per day, we did see an increase in dementia risk,” she notes. “There’s also some research on how it might increase your cholesterol. There’s a substance in coffee called cafestol that can regulate your blood cholesterol. If you’re drinking too much coffee, it might be increasing your cholesterol. So, there are risks, but often they are at really high consumption.”</p> <h2 class="wp-block-heading">What’s the limit?</h2> <p>So, how much caffeine is too much according to science?</p> <p>“That’s, the million-dollar question, isn’t it?” Pham laughs. “There’s a lot of varying research on it. It’s hard to tell a definite limit. But generally, most studies really agree that one to two cups of coffee, or an equivalent of 100 to 200 milligrams of caffeine is safe and okay.”</p> <p>The average cup of coffee has about 100 mg of caffeine. On average, instant coffee with one teaspoon of powder contains about 70 mg of caffeine, while a coffee pod has 60–90 mg.</p> <p>Other drinks containing might have even more caffeine, making it important to monitor your consumption more carefully.</p> <p>A 355 mL can of Red Bull energy drink has more than 110 mg of caffeine. Meanwhile, an average bar of dark chocolate has about 70 mg of caffeine.</p> <p>Many people are moving away from coffee to drinks like tea and matcha which may have <a href="https://cosmosmagazine.com/health/flavonoids-black-tea/">additional</a> <a href="https://cosmosmagazine.com/health/tea-drinkers-may-well-live-longer/">health</a> <a href="https://cosmosmagazine.com/health/black-tea-mortality-risk/">benefits</a>. A 100-gram cup of black tea has only about 20 mg of caffeine, while matcha can have 140–170 mg of caffeine!</p> <p>“Looking at the US, they usually recommend less than 400 milligrams. So overall, moderation and keeping your consumption to one to two cups – that’s what I’d recommend.”</p> <p>Now that I’ve written about caffeine, I think I need another cuppa. It’s only my second of the day, I swear. </p> <p><em>Image credits: Getty Images </em></p> <div> <h3><em><a href="https://link.cosmosmagazine.com/JQ4R"><noscript data-spai="1"><img decoding="async" class="alignleft size-full wp-image-198773" src="https://cdn.shortpixel.ai/spai/ret_img/cosmosmagazine.com/wp-content/uploads/2023/04/Apple-Podcasts.svg" data-spai-egr="1" alt="Subscribe to our podcasts" width="300" height="54" title="should you be worried about the amount of coffee or tea you drink? 2"></noscript></a><a href="https://link.cosmosmagazine.com/JQ4U"><noscript data-spai="1"><img decoding="async" class="alignleft size-full wp-image-198773" src="https://cdn.shortpixel.ai/spai/ret_img/cosmosmagazine.com/wp-content/uploads/2023/04/Spotify.svg" data-spai-egr="1" alt="Subscribe to our podcasts" width="300" height="54" title="should you be worried about the amount of coffee or tea you drink? 3"></noscript></a></em></h3> </div> <p><em><!-- Start of tracking content syndication. Please do not remove this section as it allows us to keep track of republished articles --></em></p> <p><em><a href="https://cosmosmagazine.com/health/body-and-mind/coffee-tea-caffeine-debunks/">This article</a> was originally published on <a href="https://cosmosmagazine.com">Cosmos Magazine</a> and was written by <a href="https://cosmosmagazine.com/contributor/evrim-yazgin/">Evrim Yazgin</a>.</em></p>

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The hilarious reason Dolly Parton turned down tea with Princess Kate

<p>It's been a remarkable year for country legend Dolly Parton, that she even received an invitation to tea with Princess Kate Middleton. </p> <p>Unfortunately, the icon had to decline and shared the hilarious reason why on her latest interview with <em>BBC Radio 2</em>. </p> <p>“This time, Lordy, I even got invited to have tea with Kate but I couldn’t even go," the country queen revealed about her time in London. </p> <p>“I thought it was very sweet and nice of her to invite me and one of these days I’m going to get to do that – that would be great," she added. </p> <p>When asked why she couldn't attend the prestigious afternoon tea, Parton joked: “She wasn’t going to promote my rock album so I had to say no.”</p> <p>On a more serious note, she said that despite her love for the people and London, she "unfortunately" doesn't have enough time to explore the city while she's there on business. </p> <p>The icon has been booked and busy with an upcoming rock album that is set to be released on November. </p> <p>Earlier this month she released <em>Let It Be</em>, a cover of the iconic Beatles song which she sang with two members of the band Paul McCartney and Ringo Starr.</p> <p>She's also been very active in her charity work, particularly her Imagination Library, which she founded and is currently expanding to help more children get free books up until they turn five. </p> <p><em>Images: Getty</em></p>

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Arctic Ocean could be ice-free in summer by 2030s, say scientists – this would have global, damaging and dangerous consequences

<p><a href="https://theconversation.com/profiles/jonathan-bamber-102567">Jonathan Bamber</a>, <em><a href="https://theconversation.com/institutions/university-of-bristol-1211">University of Bristol</a></em></p> <p>The Arctic Ocean could be ice-free in summer by the 2030s, even if we do a good job of reducing emissions between now and then. That’s the worrying conclusion of a new study in <a href="https://www.nature.com/articles/s41467-023-38511-8">Nature Communications</a>.</p> <p>Predictions of an ice-free Arctic Ocean have a long and complicated history, and the 2030s is sooner than most scientists had thought possible (though it is later than some had wrongly forecast). What we know for sure is the disappearance of sea ice at the top of the world would not only be an emblematic sign of climate breakdown, but it would have global, damaging and dangerous consequences.</p> <p>The Arctic has been experiencing climate heating <a href="https://theconversation.com/arctic-is-warming-nearly-four-times-faster-than-the-rest-of-the-world-new-research-188474">faster than any other part of the planet</a>. As it is at the frontline of climate change, the eyes of many scientists and local indigenous people have been on the sea ice that covers much of the Arctic Ocean in winter. This thin film of frozen seawater expands and contracts with the seasons, reaching a minimum area in September each year.</p> <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=184&amp;fit=crop&amp;dpr=1 600w, https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=184&amp;fit=crop&amp;dpr=2 1200w, https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=184&amp;fit=crop&amp;dpr=3 1800w, https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=232&amp;fit=crop&amp;dpr=1 754w, https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=232&amp;fit=crop&amp;dpr=2 1508w, https://images.theconversation.com/files/530136/original/file-20230605-19-mdh85y.gif?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=232&amp;fit=crop&amp;dpr=3 2262w" alt="Animation of Arctic sea ice from space" /></a><figcaption><span class="caption">Arctic sea ice grows until March and then shrinks until September.</span> <span class="attribution"><a class="source" href="https://www.nasa.gov/feature/esnt/2022/nasa-finds-2022-arctic-winter-sea-ice-10th-lowest-on-record">NASA</a></span></figcaption></figure> <p>The ice which remains at the end of summer is called multiyear sea ice and is considerably thicker than its seasonal counterpart. It acts as barrier to the transfer of both moisture and heat between the ocean and atmosphere. Over the past 40 years this multiyear sea ice has shrunk from around <a href="http://polarportal.dk/en/sea-ice-and-icebergs/sea-ice-extent0/">7 million sq km to 4 million</a>. That is a loss equivalent to roughly the size of India or 12 UKs. In other words, it’s a big signal, one of the most stark and dramatic signs of fundamental change to the climate system anywhere in the world.</p> <p>As a consequence, there has been considerable effort invested in determining when the Arctic Ocean might first become ice-free in summer, sometimes called a “blue ocean event” and defined as when the sea ice area drops below 1 million sq kms. This threshold is used mainly because older, thicker ice along parts of Canada and northern Greenland is expected to remain long after the rest of the Arctic Ocean is ice-free. We can’t put an exact date on the last blue ocean event, but one in the near future would likely mean open water at the North Pole for the first time in <a href="https://www.nature.com/articles/nature10581">thousands of years</a>.</p> <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=712&amp;fit=crop&amp;dpr=1 600w, https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=712&amp;fit=crop&amp;dpr=2 1200w, https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=712&amp;fit=crop&amp;dpr=3 1800w, https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=895&amp;fit=crop&amp;dpr=1 754w, https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=895&amp;fit=crop&amp;dpr=2 1508w, https://images.theconversation.com/files/530138/original/file-20230605-29-9uuhxu.png?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=895&amp;fit=crop&amp;dpr=3 2262w" alt="Annotated map of Arctic" /></a><figcaption><span class="caption">The thickest ice (highlighted in pink) is likely to remain even if the North Pole is ice-free.</span> <span class="attribution"><a class="source" href="https://nsidc.org/arcticseaicenews/2015/05/new-tools-for-sea-ice-thickness/">NERC Center for Polar Observation and Modelling</a>, <a class="license" href="http://creativecommons.org/licenses/by-sa/4.0/">CC BY-SA</a></span></figcaption></figure> <p>One problem with predicting when this might occur is that sea ice is notoriously difficult to model because it is influenced by both atmospheric and oceanic circulation as well as the flow of heat between these two parts of the climate system. That means that the climate models – powerful computer programs used to simulate the environment – need to get all of these components right to be able to accurately predict changes in sea ice extent.</p> <h2>Melting faster than models predicted</h2> <p>Back in the 2000s, an assessment of early generations of climate models found they generally <a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2007GL029703">underpredicted the loss of sea ice</a> when compared to satellite data showing what actually happened. The models predicted a loss of about 2.5% per decade, while the observations were closer to 8%.</p> <p>The next generation of models did better but were <a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2012GL052676">still not matching observations</a> which, at that time were suggesting a blue ocean event would happen by mid-century. Indeed, the latest <a href="https://www.ipcc.ch/report/sixth-assessment-report-working-group-i/">IPCC climate science report</a>, published in 2021, reaches a similar conclusion about the timing of an ice-free Arctic Ocean.</p> <p>As a consequence of the problems with the climate models, some scientists have attempted to extrapolate the observational record resulting in the controversial and, ultimately, incorrect assertion that this would happen <a href="https://www.theguardian.com/environment/2016/aug/21/arctic-will-be-ice-free-in-summer-next-year">during the mid 2010s</a>. This did not help the credibility of the scientific community and its ability to make reliable projections.</p> <h2>Ice-free by 2030?</h2> <p>The scientists behind the latest study have taken a different approach by, in effect, calibrating the models with the observations and then using this calibrated solution to project sea ice decline. This makes a lot of sense, because it reduces the effect of small biases in the climate models that can in turn bias the sea ice projections. They call these “observationally constrained” projections and find that the Arctic could become ice-free in summer as early as 2030, even if we do a good job of reducing emissions between now and then.</p> <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=394&amp;fit=crop&amp;dpr=1 600w, https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=394&amp;fit=crop&amp;dpr=2 1200w, https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=394&amp;fit=crop&amp;dpr=3 1800w, https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=495&amp;fit=crop&amp;dpr=1 754w, https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=495&amp;fit=crop&amp;dpr=2 1508w, https://images.theconversation.com/files/530365/original/file-20230606-21-usmovg.jpg?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=495&amp;fit=crop&amp;dpr=3 2262w" alt="Walruses on ice floe" /></a><figcaption><span class="caption">Walruses depend on sea ice. As it melts, they’re being forced onto land.</span> <span class="attribution">outdoorsman / shutterstock</span></figcaption></figure> <p>There is still plenty of uncertainty around the exact date – about <a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2016GL070067">20 years or so</a> – because of natural chaotic fluctuations in the climate system. But compared to previous research, the new study still brings forward the most likely timing of a blue ocean event by about a decade.</p> <h2>Why this matters</h2> <p>You might be asking the question: so what? Other than some polar bears not being able to hunt in the same way, why does it matter? Perhaps there are even benefits as the previous US secretary of state, Mike Pompeo, <a href="https://edition.cnn.com/2019/05/06/politics/pompeo-sea-ice-arctic-council/index.html">once declared</a> – it means ships from Asia can potentially save around 3,000 miles of journey to European ports in summer at least.</p> <p>But Arctic sea ice is an important component of the climate system. As it dramatically reduces the amount of sunlight absorbed by the ocean, removing this ice is predicted to further accelerate warming, through a process known as a positive feedback. This, in turn, will make the Greenland ice sheet <a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2014GL059770">melt faster</a>, which is already a major contributor to <a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2021RG000757">sea level rise</a>.</p> <p>The loss of sea ice in summer would also mean changes in <a href="https://www.ipcc.ch/report/ar6/wg2/chapter/ccp6/">atmospheric circulation and storm tracks</a>, and fundamental shifts in ocean biological activity. These are just some of the <a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021RG000757">highly undesirable consequences</a> and it is fair to say that the disadvantages will far outweigh the slender benefits.</p> <p><a href="https://theconversation.com/profiles/jonathan-bamber-102567">Jonathan Bamber</a>, Professor of Physical Geography, <em><a href="https://theconversation.com/institutions/university-of-bristol-1211">University of Bristol</a></em></p> <p><em>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/arctic-ocean-could-be-ice-free-in-summer-by-2030s-say-scientists-this-would-have-global-damaging-and-dangerous-consequences-206974">original article</a>.</em></p> <p><em>Images: Getty</em></p>

Travel Trouble

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More than 100,000 tourists will head to Antarctica this summer. Should we worry about damage to the ice and its ecosystems?

<p>As the summer sun finally arrives for people in the Southern Hemisphere, more than 100,000 tourists will head for the ice. Travelling on one of more than 50 cruise ships, they will brave the two-day trip across the notoriously rough Drake Passage below Patagonia, destined for the polar continent of Antarctica. </p> <p>During the COVID summer of 2020-21, just 15 tourists on two yachts visited Antarctica. But now, tourism is back – and bigger than ever. This season’s <a href="https://iaato.org/wp-content/uploads/2022/06/ATCM44-IAATO-Overview.pdf">visitor numbers</a> are up more than 40% over the largest <a href="https://iaato.org/wp-content/uploads/2020/07/IAATO-on-Antarctic-visitor-figures-2019-20-FINAL.pdf">pre-pandemic year</a>. </p> <p>So are all those tourists going to damage what is often considered the last untouched wilderness on the planet? Yes and no. The industry is well run. Tourists often return with a new appreciation for wild places. They spend a surprisingly short amount of time actually on the continent or its islands. </p> <p>But as tourism grows, so will environmental impacts such as black carbon from cruise ship funnels. Tourists can carry in microbes, seed and other invasive species on their boots and clothes – a problem that will only worsen as ice melt creates new patches of bare earth. And cruise ships are hardly emissions misers.</p> <h2>How did Antarctic tourism go mainstream?</h2> <p>In the 1950s, the first tourists hitched rides on Chilean and Argentinian naval vessels heading south to resupply research bases on the South Shetland Islands. From the late 1960s, dedicated icebreaker expedition ships were venturing even further south. In the early 1990s, as ex-Soviet icebreakers became available, the industry began to expand – about a dozen companies offered trips at that time. By the turn of this century, the ice continent was receiving more than 10,000 annual visitors: Antarctic tourism had gone mainstream. </p> <p>What does it look like today? </p> <p>Most Antarctic tourists travel on small “expedition-style” vessels, usually heading for the relatively accessible Antarctic Peninsula. Once there, they can take a zodiac boat ride for a closer look at wildlife and icebergs or shore excursions to visit penguin or seal colonies. Visitors can kayak, paddle-board and take the polar plunge – a necessarily brief dip into subzero waters. </p> <p>For most tourists, accommodation, food and other services are provided aboard ship. Over a third of all visitors never stand on the continent. </p> <p>Those who do set foot on Antarctica normally make brief visits, rather than taking overnight stays. </p> <p>For more intrepid tourists, a few operators offer overland journeys into the continent’s interior, making use of temporary seasonal camp sites. There are no permanent hotels, and Antarctic Treaty nations recently <a href="https://documents.ats.aq/ATCM44/fr/ATCM44_fr001_e.pdf">adopted a resolution</a>against permanent tourist facilities. </p> <p>As tourists come in increasing numbers, some operators have moved to offer ever more adventurous options such as mountaineering, heli-skiing, underwater trips in submersibles and scuba diving.</p> <h2>Is Antarctic tourism sustainable?</h2> <p>As Antarctic tourism booms, some advocacy organisations have warned the impact may be unsustainable. For instance, the Antarctic and Southern Ocean Coalition <a href="https://www.asoc.org/campaign/responsible-tourism-and-shipping/">argues</a> cruise tourism could put increased pressure on an environment already under significant strain from climate change. </p> <p>In areas visited most by tourists, the snow has a <a href="https://theconversation.com/each-antarctic-tourist-effectively-melts-83-tonnes-of-snow-new-research-177597">higher concentration</a> of black carbon from ship exhaust, which soaks up more heat and leads to snow melt. Ship traffic also risks carrying <a href="https://www.pnas.org/doi/10.1073/pnas.2110303118">hitchhiking invasive species</a> into the Southern Ocean’s vulnerable marine ecosystems.</p> <p>That’s to say nothing of greenhouse gas emissions. Because of the continent’s remoteness, tourists visiting Antarctica have a <a href="https://www.tandfonline.com/doi/full/10.1080/09669581003653534">higher per capita carbon footprint</a>than other cruise-ship travellers. </p> <p>Of course, these impacts aren’t limited to tourism. Scientific expeditions come with similar environmental costs – and while there are far fewer of them, scientists and support personnel spend far more time on the continent. </p> <h2>Antarctic tourism isn’t going away – so we have to plan for the future</h2> <p>Are sustainable cruises an oxymoron? Many <a href="https://www.popsci.com/environment/why-cruise-ships-are-bad-for-the-environment/#:%7E:text=Studies%20have%20shown%20one%20cruise,in%20unhealthy%20levels%20of%20pollution.">believe so</a>. </p> <p>Through its sheer size, the cruise industry has created <a href="https://theconversation.com/time-to-rock-the-boat-cruise-ships-can-destroy-the-very-destinations-they-sell-to-us-55245">mass tourism</a> in new places and <a href="https://theconversation.com/overtourism-a-growing-global-problem-100029">overtourism</a> in others, generating unacceptable levels of crowding, disrupting the lives of residents, repurposing local cultures for “exotic” performances, damaging the environment and adding to emissions from fossil fuels. </p> <p>In Antarctica, crowding, environmental impact and emissions are the most pressing issues. While 100,000 tourists a year is tiny by global tourism standards – Paris had almost 20 million in 2019 – visits are concentrated in highly sensitive ecological areas for only a few months per year. There are no residents to disturb (other than local wildlife), but by the same token, there’s no host community to protest if visitor numbers get too high. </p> <p>Even so, strong protections are in place. In accordance with the Antarctic Treaty System – the set of international agreements signed by countries with an Antarctic presence or an interest – tourism operators based in those nations have to apply for permits and follow <a href="https://www.ats.aq/e/protocol.html">stringent environmental regulations</a>. </p> <p>To avoid introducing new species, tourists have to follow rules such as disinfecting their boots and vacuuming their pockets before setting foot on the ice, and keeping a set distance from wildlife. </p> <p>Almost all Antarctic cruise owners belong to the International Association of Antarctica Tour Operators, the peak body that manages Antarctic tourism. </p> <p>For the first time this year, operators have to report their <a href="https://iaato.org/antarctic-tour-operators-fuel-consumption-to-be-analysed-as-they-embark-on-climate-strategy/">overall fuel consumption</a> as part of IAATO’s efforts to make the industry more climate-friendly. Some operators are now using hybrid vessels that can run partly on electric propulsion for short periods, reducing carbon dioxide emissions.</p> <h2>Returning from the ice: the ambassador effect</h2> <p>Famed travel writer Pico Iyer <a href="https://www.nytimes.com/2022/11/17/t-magazine/travel-destinations-experiences.html?te=1&amp;nl=from-the-times&amp;emc=edit_ufn_20221127">recently wrote</a> of his experience in the deep south of the world. The visit, he said, “awakens you to the environmental concerns of the world … you go home with important questions for your conscience as well as radiant memories”. </p> <p>Iyer isn’t alone. This response is widespread, known in the industry as <a href="https://www.cambridge.org/core/journals/polar-record/article/what-and-who-is-an-antarctic-ambassador/4943D999A9D58BC00D1705C110075163">Antarctic ambassadorship</a>. As you’d expect, this is <a href="https://iaato.org/antarctic-ambassadors/antarctic-ambassadors/">strongly promoted</a> by tourism operators as a positive. </p> <p>Is it real? That’s contentious. Studies on links between polar travel and pro-environmental behaviour have yielded <a href="https://doi.org/10.1017/S0032247408007456">mixed results</a>. We are working with two operators to examine the Antarctic tourist experience and consider what factors might feed into a long-lasting ambassador effect. </p> <p>If you’re one of the tourists going to Antarctica this summer, enjoy the experience – but go with care. Be aware that no trip south comes without environmental cost and use this knowledge to make clear-eyed decisions about your activities both in Antarctica and once you’re safely back home.</p> <p><em>Image credits: Getty Images</em></p> <p><em>This article originally appeared on <a href="https://theconversation.com/more-than-100-000-tourists-will-head-to-antarctica-this-summer-should-we-worry-about-damage-to-the-ice-and-its-ecosystems-192843" target="_blank" rel="noopener">The Conversation</a>. </em></p>

International Travel

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Does black tea improve heart health?

<p>Tea is full of flavonoids: a class of substances thought to have a range of health benefits.</p> <p>They also appear in fruits and vegetables like berries, oranges and apples – as well as red wine and dark chocolate.</p> <p>An international team of researchers, based in Western Australia, has found a link between flavonoids and better arterial health.</p> <p>The study, which looked at the diets of 881 women aged between 78 and 82, found that those who consumed a lot of flavonoids – which in this group, mainly came from black tea – were less likely to have an extensive build-up of abdominal aortic calcification (AAC).</p> <p>AAC is a process in the body’s biggest artery (the aorta), and it’s a predictor of a range of health conditions including heart attacks, strokes and late-life dementia.</p> <p>“This research is really exciting because it’s the first time we have seen in humans, that higher long-term dietary flavonoid intake appears to protect against vascular calcification,” says lead researcher Ben Parmenter, a researcher at Edith Cowan University’s Nutrition and Health Innovation Research Institute.</p> <p>“While several studies have shown a potential link in rodents, ours is the first human study, linking total dietary flavonoid consumption with a lower propensity of the abdominal aorta to calcify.”</p> <p>The researchers examined data from the Perth Longitudinal Study of Ageing Women, a long-term study done on older, white Western Australian women to investigate bone health and calcium intake.</p> <p>“Recruitment for this study took place in 1998—back when I was in primary school!” says Parmenter.</p> <p>“It was at this time that the medical examinations and participant questionnaires were collected.”</p> <p>The researchers compared the diets each woman reported to their AAC.</p> <p>Black tea was the biggest source of flavonoids in the study, accounting for 76% of total flavonoid intake.</p> <p>Those who drank between two and six cups daily had a 16-42% lower chance of having extensive AAC.</p> <p>“Out of the women who don’t drink black tea, higher total non-tea flavonoid intake also appears to protect against extensive calcification of the arteries,” says Parmenter.</p> <p>Participants who had higher flavonoid intake in total had a 36-39% lower chance of extensive AAC.</p> <p>But some specific flavonoid sources – red wine, fruit juice and chocolate – weren’t associated with better AAC.</p> <p>Parmenter says that, since this study was done on a fairly select demographic, it’s hard to tell if the results would be similar younger people, males, or other ethnicities.</p> <p>“Although we hypothesis that the benefits are likely to extend to these demographics – ultimately, further research is needed to investigate this.”</p> <p>Next, the researchers are interested in looking at the relationship between flavonoids and stroke.</p> <p>“We previously released findings showing that higher habitual dietary flavonoid consumption associates with lower long-term risk of stroke, but we have now gone further, to investigate specific mechanisms,” says Parmenter.</p> <p><strong>This article originally appeared on <a href="https://cosmosmagazine.com/health/flavonoids-black-tea/" target="_blank" rel="noopener">cosmosmagazine.com</a> and was written by Ellen Phiddian.</strong></p> <p><em>Image: Shutterstock</em></p>

Body

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Are herbal teas good for you?

<p>If you’re a regular sipper of something herbal, chances are good that you’ve chosen your blend based on the way it tastes and the apparent health benefits of the blend in question. You might brew up a chamomile of an evening or put on a pot of peppermint when your tummy feels upset. But do these teas actually do what they say on the label? The short answer is yes! Herbal teas are a fantastic way to enjoy the medicinal properties of herbs in a safe and easily accessed way. If you’re keen to expand your “herbal tea wardrobe” try picking up a packet of one of the following next time you’re out shopping.</p> <p><strong>1.     Green tea</strong></p> <p>One of the herbal staples, green tea is often touted as a ‘super food’ (or drink) due to its high level of antioxidants. Recent research has also found that it contains high levels of L-thenanine, an amino acid that helps calm and soothe your system. If you’re not a fan of the taste of traditional blends, try Japanese green tea, which tends to be milder on the palette.</p> <p><strong>2.     Chamomile tea</strong></p> <p>Regularly drunk as a night time tea, chamomile flowers have a calming effect on the nervous system as well as on your digestive system, making them a great choice for when your tummy is unsettled or if you suffer from conditions like IBS.</p> <p><strong>3.     Peppermint tea</strong></p> <p>One of the most popular and easy to find teas, peppermint is widely regarded as a great digestive soother. These potent plants also have energy boosting properties and can help you remain alert.</p> <p><strong>4.     Ginger tea</strong></p> <p>Whether you use teabags or freshly grated root ginger, a ginger infusion is fantastic for increasing circulation and easing inflammation. This makes it especially good for the cooler months or for those who suffer joint problems.</p> <p><em>Image: Getty</em></p>

Body

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Mortali-tea! Black tea drinking linked to lower risk of dying

<p>The health benefits of green tea are well-established, but black tea might be a good idea too, according to a new analysis.</p> <p>The study, published in Annals of Internal Medicine, draws on data from nearly half a million people to find a link between black tea drinking and lower mortality risk.</p> <p>The researchers, who are based at the US National Institute of Health, examined data from the long-term UK Biobank study, which tracked a cohort of 502,488 UK residents aged between 40 and 69.</p> <p>Between 2006 and 2010, participants in this study regularly logged a range of lifestyle, and health-related information via touchscreens at assessment centres. This information included tea drinking, by number of cups per day.</p> <p>Among the 498,043 participants who logged tea-drinking information, 85% reported regularly drinking tea. Nearly a fifth of participants (19%) reported drinking more than six cups of tea per day.</p> <p>A separate survey of a smaller cohort of participants suggested that 89% of the tea drinkers drank black tea, while 7% drank green tea.</p> <p>According to the UN, the UK consumes around 100,000 tonnes of tea each year – or about 1.5 kilograms per person.</p> <p>The American researchers combined the tea-drinking information in the UK with mortality data.</p> <p>Once they’d adjusted for age and demographics, they found that participants who drank at least two cups of tea per day had a 9-13% lower risk of dying.</p> <p>Drinking 2-3 cups per day was associated with the lowest mortality risk, but even drinking 10 or more cups was linked to a lower mortality risk than drinking no tea at all.</p> <p>In their paper, the researchers say that their findings reflect similar studies based in China and Japan, where green tea is much more common than black.</p> <p>“Fewer studies have assessed tea intake and mortality in populations where black tea is predominantly consumed, such as in the United States and Europe, and results have varied across studies,” write the researchers.</p> <p>They point out, however, that they didn’t track some “potentially important aspects” like tea strength or cup size, making it harder to draw precise conclusions.</p> <p>While the study is observational and thus can’t establish a cause, the researchers point out that the polyphenols and flavonoids in black tea have been linked to a variety of health benefits in small randomized-control trials – including lower cholesterol, and a lower risk of carcinogenesis and type 2 diabetes.</p> <p>“These findings provide reassurance to tea drinkers and suggest that black tea can be part of a healthy diet,” write the researchers.</p> <p><strong>This article originally appeared in <a href="https://cosmosmagazine.com/health/black-tea-mortality-risk/" target="_blank" rel="noopener">cosmosmagazine.com</a> and was written by Ellen Phiddian.</strong></p> <p><em>Image: Shutterstock</em></p>

Body

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Homemade snack eaten by the Queen every day for over nine decades

<p dir="ltr">A former royal chef has revealed that Queen Elizabeth II has been eating one particular snack ever since she was first served it as a child in the royal nursery.</p> <p dir="ltr">Darren McGrady worked for the royal family for almost two decades according to <em>The Sun</em>, and has since revealed some of the Queen’s favourite dishes and frequent requests, including one known as Jam Pennies.</p> <p dir="ltr">McGrady described Jam Pennies as a simple sandwich of “bread and jam with a little butter - usually strawberry jam”, and said the Queen has been eating them every day for 91 years.</p> <p dir="ltr">“We’d make the jam at Balmoral Castle with the gorgeous Scottish strawberries from the gardens,” he said.</p> <p dir="ltr">Meanwhile, another former royal chef has said the Queen is partial to a tuna and mayonnaise sandwich, a popular combination among Brits, but with her own twist.</p> <p dir="ltr">Owen Hodgson told the <em>Telegraph </em>that the monarch prefers hers well-buttered with cucumbers and pepper.</p> <p dir="ltr">Aside from sandwiches, McGrady has shared more insights into Her Majesty’s dining habits, including her insistence on having afternoon tea no matter where in the world she happens to be.</p> <p dir="ltr">The chef recalled one particular instance when he flew to Australia and settled aboard a royal yacht at 5am local time, which was five in the afternoon for the Queen - meaning his first task was to make scones.</p> <p dir="ltr">“In terms of scones - one day plain and one day with raisins folded through,” he said of the Queen’s usual afternoon tea spread.</p> <p dir="ltr">“Also, tiny pastries like raspberry tartlets and a cut cake, honey and cream sponge, fruit cake, banana bread, or her favourite chocolate biscuit cake.</p> <p><span id="docs-internal-guid-173e3f25-7fff-7124-bfda-aae4a4b6d2c9"></span></p> <p dir="ltr">“It would all be washed down with a delightful steaming hot cup of Earl Grey tea.”</p> <p dir="ltr"><em>Image: Getty Images</em></p>

Food & Wine

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Celebrity chef turns down tea with Queen for surprising reason

<p dir="ltr">Italian chef Gino D’Acampo turned down an invitation to have tea with Queen Elizabeth II due to the presence of a particular food on the menu: cucumber sandwiches.</p> <p dir="ltr">The celebrity chef, who has hosted several UK food shows and runs multiple restaurants, was invited to Buckingham Palace prior to the COVID-19 pandemic, but turned down the offer because he wasn’t “keen” on the menu of food and drinks being served.</p> <p dir="ltr">"I'm not very keen on tea or cucumber sandwiches,” he told the <em>Daily Mail</em>.</p> <p dir="ltr">"I was invited to the palace for tea just before Covid, but a cucumber sandwich is my worst nightmare.</p> <p><span id="docs-internal-guid-da515c43-7fff-1eac-523a-d51d95b5b820"></span></p> <p dir="ltr">"I don't like tea either, so I phoned my agent and said: 'I'd love to meet her, but I don't like tea and cucumber sandwiches, and I can't do either of those things.”</p> <blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 540px; min-width: 326px; padding: 0; width: calc(100% - 2px);" data-instgrm-captioned="" data-instgrm-permalink="https://www.instagram.com/reel/CebtSyul78g/?utm_source=ig_embed&amp;utm_campaign=loading" data-instgrm-version="14"> <div style="padding: 16px;"> <div style="display: flex; flex-direction: row; align-items: center;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;"> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 60px;"> </div> </div> </div> <div style="padding: 19% 0;"> </div> <div style="display: block; height: 50px; margin: 0 auto 12px; width: 50px;"> </div> <div style="padding-top: 8px;"> <div style="color: #3897f0; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: 550; line-height: 18px;">View this post on Instagram</div> </div> <div style="padding: 12.5% 0;"> </div> <div style="display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;"> <div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);"> </div> <div style="background-color: #f4f4f4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;"> </div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);"> </div> </div> <div style="margin-left: 8px;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;"> </div> <div style="width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg);"> </div> </div> <div style="margin-left: auto;"> <div style="width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);"> </div> <div style="background-color: #f4f4f4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);"> </div> <div style="width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);"> </div> </div> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;"> </div> </div> <p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;"><a style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none;" href="https://www.instagram.com/reel/CebtSyul78g/?utm_source=ig_embed&amp;utm_campaign=loading" target="_blank" rel="noopener">A post shared by Gino D’Acampo (@iamginodacampo)</a></p> </div> </blockquote> <p dir="ltr">Having to wear a tie and dressing fancily was another deterrent for D’Acampo, who claimed the last time he wore one was at his wedding, when he married his teenage sweetheart, Jessica Stellina Morrison, in 2002.</p> <p dir="ltr">"I'm also going to have to wear a tie, and the last time I did that was when I got married. I can't do that. But if I can have a plate of pasta and a cup of coffee, I'm in," he added.</p> <p dir="ltr">Though cucumber sandwiches might be his “worst nightmare”, his eponymous restaurant in Newcastle recently featured an Italian twist on the classic sandwich, replacing cucumbers with truffle cream cheese.</p> <p dir="ltr"><span id="docs-internal-guid-204da463-7fff-46fc-2866-ad07ff413570"></span></p> <p dir="ltr"><em>Image: @iamginodacampo (Instagram)</em></p>

Food & Wine

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We studied how the Antarctic ice sheet advanced and retreated over 10,000 years. It holds warnings for the future

<p>Alarming stories from Antarctica are now more frequent than ever; the ice surface is <a href="https://theconversation.com/warmer-summers-threaten-antarcticas-giant-ice-shelves-because-of-the-lakes-they-create-180989" target="_blank" rel="noopener">melting</a>, floating ice shelves are <a href="https://theconversation.com/conger-ice-shelf-has-collapsed-what-you-need-to-know-according-to-experts-180077" target="_blank" rel="noopener">collapsing</a> and glaciers are <a href="https://theconversation.com/ice-world-antarcticas-riskiest-glacier-is-under-assault-from-below-and-losing-its-grip-178828" target="_blank" rel="noopener">flowing faster</a> into the ocean.</p> <p>Antarctica will be the largest source of future sea-level rise. Yet scientists <a href="https://theconversation.com/scientists-still-dont-know-how-far-melting-in-antarctica-will-go-or-the-sea-level-rise-it-will-unleash-166677" target="_blank" rel="noopener">don’t know</a> exactly how this melting will unfold as the climate warms.</p> <p>Our <a href="https://dx.doi.org/10.1038/s43017-022-00309-5" target="_blank" rel="noopener">latest research</a> looks at how the Antarctic ice sheet advanced and retreated over the past 10,000 years. It holds stark warnings, and possibly some hope, for the future.</p> <h2>The current imbalance</h2> <p>Future sea-level rise presents one of the most significant challenges of climate change, with economic, environmental and societal impacts expected for coastal communities around the globe.</p> <p>While it seems like a distant issue, the changes in Antarctica may soon be felt on our doorsteps, in the form of rising sea levels.</p> <p>Antarctica is home to the world’s largest single mass of ice: the Antarctic ice sheet. This body of glacier ice is several kilometres thick, nestled on top of solid land. It covers entire mountain ranges beneath it.</p> <p>The ice sheet “<a href="https://vimeo.com/133626869" target="_blank" rel="noopener">flows</a>” over the land from the Antarctic interior and towards the surrounding ocean. As a whole it remains a solid mass, but its shape slowly deforms as the ice crystals move around.</p> <p>While the ice sheet flows outward, snowfall from above replenishes it. This cycle is supposed to keep the system in balance, wherein balance is achieved when the ice sheet is gaining the same amount of ice as it’s losing to the ocean each year.</p> <p>However, <a href="https://climate.nasa.gov/vital-signs/ice-sheets/" target="_blank" rel="noopener">satellites</a> keeping watch from above show the ice sheet is currently not in balance. Over the past 40 years, it has lost more ice than it has gained. The result has been global rising sea levels.</p> <p>But these historical observations span only four decades, limiting our understanding of how the ice sheet responds to climate change over much longer periods.</p> <p>We wanted to look further back in time – before satellites – and even before the first polar explorers. For this, we needed natural archives.</p> <h2>Digging up Antarctica’s past</h2> <p>We brought together various natural archives to unearth how the Antarctic ice sheet changed over the past 10,000 years or so. These included:</p> <ul> <li>ice cores collected from Antarctica’s remote interior, which can show us how snow accumulated in the past</li> <li>rocks collected from exposed mountain peaks, which reveal how the ice sheet has thickened or thinned with time</li> <li>sediment cores collected from the seafloor, which reveal how the ice sheet margin – where the edge of the land ice meets the ocean – advanced or retreated</li> <li>lake mud and old beaches, which reveal how the coastline changed in response to the ice sheet growing or shrinking.</li> </ul> <p>When we started our research, I wasn’t sure what to expect. After all, this period of time was long considered fairly dull, with only small changes to the ice margin.</p> <p>Nevertheless, we studied the many different natural archives one by one. The work felt like a 1,000-piece jigsaw puzzle, full of irregular-shaped pieces and seemingly no straight edge. But once we put them together, the pieces lined up and the picture was clear.</p> <p>Most striking was a period of ice loss that took place in all regions of Antarctica about 10,000 to 5,000 years ago. It resulted in many metres of sea-level rise globally.</p> <p>In some regions of Antarctica, however, this ice loss was then followed by ice gain during the past 5,000 years – and a corresponding global sea-level fall – as the ice sheet margin advanced to where it is today.</p> <h2>A warning</h2> <p>Understanding how and why the Antarctic ice sheet changed in this fashion offers lessons for the future.</p> <p>The first lesson is more of a warning. The period of ice loss from 10,000 to 5,000 years ago was rapid, occurring at a similar rate to the most dramatically changing parts of the Antarctic ice sheet today.</p> <p>We think it was likely the result of warm ocean water melting the underside of floating ice shelves – something that has also happened in recent decades. These ice shelves hold back the ice on land, so once they’re removed the ice on the land flows faster into the ocean.</p> <p>In the future, it’s predicted ice loss will <a href="https://youtu.be/XRUxTFWWWdY?t=149" target="_blank" rel="noopener">accelerate</a> as the ice sheet retreats into basins below sea level. This may already be under way in some regions of Antarctica. And based on what happened in the past, the resulting ice loss could persist for centuries.</p> <h2>Bouncing back</h2> <p>The second lesson from our work may bring some hope. Some 5,000 years ago the ice sheet margin stopped retreating in most locations, and in some regions actually started to advance. One explanation for this relates to the previous period of ice loss.</p> <p>Before the ice began melting away, the Antarctic ice sheet was much heavier, and its weight pushed down into the Earth’s crust (which sits atop a molten interior). As the ice sheet melted and became lighter, the land beneath it would have lifted up – effectively hauling the ice out of the ocean.</p> <p>Another possible explanation is climate change. At Antarctica’s coastal fringe, the ocean may have temporarily switched from warmer to cooler waters around the time the ice sheet began advancing again. At the same time, more snowfall took place at the top of the ice sheet.</p> <p>Our research supports the idea that the Antarctic ice sheet is poised to lose more ice and raise sea levels – particularly if the ocean continues to warm.</p> <p>It also suggests uplift of the land and increased snowfall have the potential to slow or offset ice loss. However, this effect is not certain.</p> <p>The past can never be a perfect test for the future. And considering the planet is <a href="https://www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_SPM.pdf" target="_blank" rel="noopener">warming faster</a> now than it was back then, we must err on the side of caution.</p> <p><em><strong>This article originally appeared on <a href="https://theconversation.com/we-studied-how-the-antarctic-ice-sheet-advanced-and-retreated-over-10-000-years-it-holds-warnings-for-the-future-185505" target="_blank" rel="noopener">The Conversation</a>.</strong></em></p> <p><em>Image: Shutterstock</em></p>

Travel Trouble

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See inside the new experience exclusively for women

<p dir="ltr">Step into a lavish world of hobnobbing, wine and lavish food with your very own butler at the latest, most exclusive event from Tasmania’s Museum of Old and New Art (MONA).</p> <p dir="ltr">The <a href="https://mona.net.au/stuff-to-do/experiences/ladies-lounge" target="_blank" rel="noopener">High Tea for Two</a>, held in the museum’s opulent Ladies Lounge, was created by artist and curator Kirsha Kaechele and is an experience only available for women.</p> <p dir="ltr">Kaechele was inspired by the ladies-only parties thrown by her great-grandmother “Tootsie”, a scandalous socialite, which involved a fleet of dancing butlers, 400-year-old wines, and occasional visits from Spanish painter Pablo Picasso.</p> <p><span id="docs-internal-guid-ca9dc0e3-7fff-0da4-fed8-74061b30baa3"></span></p> <p dir="ltr">With a dress code of green, gold, black and white finery, you can expect to be greeted by your butler with elbow-length velvet gloves and extravagant jewellery for you to wear, followed by a 12-course high tea in the chandelier-lit lounge where works from Picasso are among those donning the walls.</p> <p dir="ltr"><img src="https://oversixtydev.blob.core.windows.net/media/2022/06/mona-tea1.jpg" alt="" width="1280" height="720" /></p> <p dir="ltr"><em>The High Tea for Two is inspired by the women-only parties held by its creator’s great-grandmother. Images: MONA</em></p> <p dir="ltr">Though the lounge is open to any women visiting the museum, high tea sessions are restricted to just two ladies, your butler Hepburn, his sidekick “Robinson”, and a blindfolded saxophonist - making you part of the artwork that others can observe.</p> <p dir="ltr">The two-hour experience runs twice daily (11am and 2.30pm) on Saturdays and Sundays, with the total $500 package including nibbles, matched drinks, butler service and museum entry.</p> <p dir="ltr">To book your experience, head <a href="https://culturalattractionsofaustralia.com/experiences/high-tea-for-two/" target="_blank" rel="noopener">here</a>.</p> <p dir="ltr"><span id="docs-internal-guid-26d1fd6d-7fff-2a06-fd6c-6dd19be4bd31"></span></p> <p dir="ltr"><em>Image: MONA</em></p>

Domestic Travel

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I scream, you scream we all scream for ice-cream

<p dir="ltr">Peters Ice Cream has been slapped with a massive $12 million fine after it was caught preventing competitors from selling their products at petrol stations and convenience stores.</p> <p dir="ltr">The Federal Court found that Peters, from November 2014 to December 2019, made a sketchy deal with their transport partner PFD Food Services to not sell competitor’s ice cream without prior consent.  </p> <p dir="ltr">The Australian Competition and Consumer Commission (ACCC), who prosecuted Peters in court, said the deal very clearly reduced competition and reduced options for consumers.</p> <p dir="ltr">“This is an important competition law case involving products enjoyed by many Australians,” ACCC Chair Gina Cass-Gottlieb said.</p> <p dir="ltr">“We took this action because we were concerned that Peters Ice Cream’s conduct could reduce competition in this market and impact on the choice of single-serve ice-creams available to consumers.”</p> <p dir="ltr">Other ice cream manufacturers who make Bulla, Gelativo and Pure Pops had approached PFD asking them to distribute their product.</p> <p dir="ltr">However, PFD said they were unable to distribute the ice creams due to its exclusive deal with Peters. </p> <p dir="ltr">"Peters Ice Cream admitted that if PFD had not been restricted from distributing other manufacturers' ice cream products, it was likely that one or more potential competitors would have entered or expanded in this market,” Ms Cass-Gottlieb continued.</p> <p dir="ltr">“This case is a reminder to all businesses of the serious and costly consequences of engaging in anti-competitive conduct.</p> <p dir="ltr">“The ACCC is targeting exclusive arrangements by firms with market power that impact competition as one of our compliance and enforcement priorities for 2022/23.”</p> <p dir="ltr">Peters Ice Cream was ordered to establish a compliance program for three years and pay a contribution to the ACCC’s legal costs.</p> <p dir="ltr"><em>Image: Instagram</em></p>

Money & Banking

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Coriander and ice-cream: the cross over nobody asked for

<p dir="ltr">McDonald’s in China has launched a very unusual dessert. It is safe to say fast-food fans are not convinced. </p> <p dir="ltr">The “Cilantro Sundae” is a limited-edition twist on McDonald’s popular ice cream dessert that is topped with a bright green coriander sauce and fresh “crumbs” of the distinctive herb.</p> <p dir="ltr">While it may seem like an early April fools prank, the menu item is actually very real, reportedly launching on February the 21st for a limited time until February the 25th.</p> <p dir="ltr">Coriander widely acknowledged as being super divisive with some loving it and most hating it, so it comes as no surprise social media has erupted like this.</p> <p dir="ltr">Twitter user @ZhugeEX appears to have started the debate around the unique combination after sharing a promotional photo of the McDonald’s item.</p> <p dir="ltr">“McDonald’s China launched a Cilantro Sundae special menu item today, which is interesting...” the video games expert told his 161,000 followers.</p> <p dir="ltr">Reaction came in thick and fast, with some declaring they were “desperate to try this terrible thing”. Customers have also been sharing snaps of the 6.6 Chinese Yuan dessert which is roughly $1.45 and has been grossed out in the process. </p> <p dir="ltr">“Cilantro is one of my favourite things so I would try it lol,” one stated.</p> <p dir="ltr">“Dear @Mcdonalds, when is coriander sundae ice cream coming to Singapore? Pretty pls...” one coriander fan pleaded.</p> <p dir="ltr">Others mocked the unusual colour, one even comparing it to the green of Ireland’s St Patrick’s Day.</p> <p> </p> <p dir="ltr">“I’m reporting this for violent and graphic content,” one user joked. </p> <p dir="ltr">Image: Instagram</p>

Food & Wine

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The internet reacts to Steve Waugh's ice cream blunder

<p>At Thursday night's Australian Open match, Ash Barty bulldozed her way into the finals in a historic win against American Madison Keys.</p> <p>However, Barty had the limelight stolen by an unsuspecting sporting legend in the crowd: former Australian cricket captain Steve Waugh.</p> <p>TV cameras panned to Waugh and showed him tucking into an ice cream cone, licking his lips and giving a nod of approval.</p> <p>The rough and tough sporting champ, who became known as the Ice Man in his playing days after coining the term "mental disintegration" to sledge opponents, let his guard down for a brief moment and the internet was flooded with hilarious reactions.</p> <p>Sports reporter Steve Smith tweeted, “Steve Waugh spent several minutes mentally disintegrating that ice-cream before devouring it.”</p> <p>AFL personality Titus O'Reilly chimed in saying, <span>“Even eating an ice-cream, Steve Waugh looks intense.”</span></p> <p>Many also made the connection to the famous <em>Seinfeld</em> episode that shows George Costanza devouring a messy ice cream sundae at the 1993 US Open, and TV cameras catching the whole feast.</p> <blockquote class="twitter-tweet"> <p dir="ltr">Steve Waugh given the George Constanza treatment… spotted eating an ice cream at the <a href="https://twitter.com/hashtag/AusOpen?src=hash&amp;ref_src=twsrc%5Etfw">#AusOpen</a> <a href="https://twitter.com/wwos?ref_src=twsrc%5Etfw">@wwos</a> <a href="https://twitter.com/hashtag/AusOpen2022?src=hash&amp;ref_src=twsrc%5Etfw">#AusOpen2022</a> <a href="https://t.co/8hD86klzZh">pic.twitter.com/8hD86klzZh</a></p> — Anthony Clark (@AnthonyClarkAU) <a href="https://twitter.com/AnthonyClarkAU/status/1486633812872204291?ref_src=twsrc%5Etfw">January 27, 2022</a></blockquote> <blockquote class="twitter-tweet"> <p dir="ltr">How good Steve Waugh pulling a Costanza at the tennis <a href="https://t.co/6vAcb3ue3z">pic.twitter.com/6vAcb3ue3z</a></p> — James Lamb (@James_M_Lamb) <a href="https://twitter.com/James_M_Lamb/status/1486630468732686339?ref_src=twsrc%5Etfw">January 27, 2022</a></blockquote> <p><em>Today</em> host Karl Stefanovic was left in stitches after seeing Waugh's sweet treat, breaking out in laughter on the morning show.</p> <p>Karl said in empathy, <span>"Having been at an NRL match and had 400 shots of me on the coverage eating pies, I kind of get it."</span></p> <p><em>Image credits: Channel Nine - Australian Open </em></p>

Food & Wine

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5 ways climate change boosts tsunami threat, from collapsing ice shelves to sea level rise

<p>The enormous eruption of the underwater volcano in Tonga, Hunga Tonga-Hunga Ha'apai, triggered a <a href="https://www.reuters.com/business/environment/tonga-volcano-generates-tsunami-us-tsunami-monitor-said-2022-01-15/">tsunami</a> that reached countries all around the Pacific rim, even causing a <a href="https://apnews.com/article/oil-spills-business-tonga-peru-trending-news-3a92a17e2101945afcb22f5eb5bfb2ad?utm_campaign=SocialFlow&amp;utm_source=Twitter&amp;utm_medium=AP">disastrous oil spill</a> along 21 beaches in Peru.</p> <p>In Tonga, waves about 2 metres high were recorded before the sea level gauge failed, <a href="https://twitter.com/ConsulateKoT/status/1483384039826464768/photo/1">and waves of up to 15m</a> hit the west coasts of Tongatapu Islands, ‘Eua, and Ha’apai Islands. Volcanic activity could continue for weeks or months, but it’s hard to predict if or when there’ll be another such powerful eruption.</p> <p>Most tsunamis are caused by earthquakes, but a <a href="http://tsunami.org/what-causes-a-tsunami/">significant percentage</a> (about 15%) are caused by landslides or volcanoes. Some of these may be interlinked – for example, landslide tsunamis are often triggered by earthquakes or volcanic eruptions.</p> <p>But does <a href="https://www.un.org/en/climatechange/what-is-climate-change">climate change</a> also play a role? As the planet warms, we’re seeing more <a href="https://www.usgs.gov/faqs/how-can-climate-change-affect-natural-disasters">frequent and intense</a> storms and cyclones, the melting of glaciers and ice caps, and sea levels rising. Climate change, however, doesn’t just affect the atmosphere and oceans, it affects the Earth’s crust as well.</p> <p><a href="https://www.reuters.com/article/us-climate-geology-idUSTRE58F62I20090916">Climate-linked</a> geological changes can increase the incidence of earthquakes and volcanic eruptions which, in turn, can exacerbate the threat of tsunamis. Here are five ways this can happen.</p> <h2>1. Sea level rise</h2> <p>If greenhouse gas emissions remain at high rates, the average global sea level is <a href="https://www.ipcc.ch/srocc/chapter/chapter-4-sea-level-rise-and-implications-for-low-lying-islands-coasts-and-communities">projected to rise</a> between 60 centimetres and 1.1m. <a href="https://www.un.org/sustainabledevelopment/wp-content/uploads/2017/05/Ocean-fact-sheet-package.pdf">Almost two thirds</a> of the world’s cities with populations over five million are at risk.</p> <p>Rising sea levels not only make coastal communities more vulnerable to flooding from storms, but also tsunamis. Even modest rises in sea level will dramatically increase the frequency and intensity of flooding when a tsunami occurs, as the tsunami can travel further inland.</p> <p>For example, <a href="https://www.science.org/doi/10.1126/sciadv.aat1180">a 2018 study</a> showed only a 50 centimetre rise would double the frequency of tsunami-induced flooding in Macau, China. This means in future, smaller tsunamis could have the same impact as larger tsunamis would today.</p> <h2>2. Landslides</h2> <p>A warming climate can increase the risk of both submarine (underwater) and aerial (above ground) landslides, thereby increasing the risk of local tsunamis.</p> <p>The <a href="https://www.nrdc.org/stories/permafrost-everything-you-need-know">melting of permafrost</a> (frozen soil) at high latitudes decreases soil stability, making it more susceptible to erosion and landslides. More <a href="https://climate.nasa.gov/news/2951/climate-change-could-trigger-more-landslides-in-high-mountain-asia/">intense rainfall</a> can trigger landslides, too, as storms become more frequent under climate change.</p> <p><a href="https://www.usgs.gov/faqs/how-do-landslides-cause-tsunamis#:%7E:text=Tsunamis%20are%20large%2C%20potentially%20deadly,a%20result%20of%20submarine%20earthquakes.&amp;text=Tsunamis%20can%20be%20generated%20on,a%20rapidly%20moving%20underwater%20landslide.">Tsunamis can be generated</a> on impact as a landslide enters the water, or as water is moved by a rapid underwater landslide.</p> <p>In general, tsunami waves generated from landslides or rock falls dissipate quickly and don’t travel as far as tsunamis generated from earthquakes, but they can still lead to huge waves locally.</p> <p>In Alaska, US, glacial retreat and melting permafrost has exposed unstable slopes. In 2015, this melting caused a landslide that sent 180 million tonnes of rock into a narrow fjord, <a href="https://www.nature.com/articles/s41598-018-30475-w">generating a tsunami reaching 193m high</a> – one of the highest ever recorded worldwide.</p> <p><a href="https://images.theconversation.com/files/441884/original/file-20220121-8856-1regaso.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/441884/original/file-20220121-8856-1regaso.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" alt="" /></a> <span class="caption">Scientists survey damage from a megatsunami in Taan Fiord that had occurred in October, 2015 after a massive landslide.</span> <span class="attribution"><span class="source">Peter Haeussler, United States Geological Survey Alaska Science Center/Wikimedia</span></span></p> <p>Other areas at risk include <a href="https://www.sciencedirect.com/science/article/pii/S0921818121000849">northwest British Columbia</a> in Canada, and the Barry Arm in Alaska, where an <a href="https://dggs.alaska.gov/hazards/barry-arm-landslide.html">unstable mountain slope</a> at the toe of the Barry Glacier has the potential to fail and <a href="https://www.woodwellclimate.org/wp-content/uploads/2020/05/Letter-to-Stakeholders_-Barry-Arm-Landslide-Final.pdf">generate a severe tsunami</a> in the next 20 years.</p> <h2>3. Iceberg calving and collapsing ice shelves</h2> <p>Global warming is accelerating the <a href="https://www.businessinsider.com.au/chasing-ice-glacier-calving-climate-change-2014-10?r=US&amp;IR=T">rate of iceberg calving</a> – when chunks of ice fall into the ocean.</p> <p>Studies predict large ice shelves, such as the Thwaites Glacier in Antarctica, will <a href="https://news.climate.columbia.edu/2021/12/17/crucial-antarctic-glacier-likely-to-collapse-much-earlier-than-expected/">likely collapse</a> in the next five to ten years. Likewise, the Greenland ice sheet is <a href="https://climate.nasa.gov/news/3062/warming-seas-are-accelerating-greenlands-glacier-retreat/">thinning and retreating</a> at an alarming rate.</p> <p><a href="https://images.theconversation.com/files/441878/original/file-20220121-8497-jjkh3d.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/441878/original/file-20220121-8497-jjkh3d.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" alt="Iceberg near ship" /></a> <span class="caption">Icebergs colliding with the seafloor can trigger underwater landslides.</span> <span class="attribution"><span class="source">Shutterstock</span></span></p> <p>While much of the current research focus is on the sea level risk associated with melting and collapse of glaciers and ice sheets, there’s also a <a href="https://nhess.copernicus.org/articles/12/415/2012/">tsunami risk</a> from the calving and breakup process.</p> <p>Wandering icebergs can trigger <a href="https://www.nature.com/articles/s41561-021-00767-4">submarine landslides and tsunamis</a> thousands of kilometres from the iceberg’s original source, as they hit unstable sediments on the seafloor.</p> <h2>4. Volcanic activity from ice melting</h2> <p>About 12,000 years ago, the last glacial period (“ice age”) ended and the melting ice triggered a dramatic <a href="https://eprints.lancs.ac.uk/id/eprint/32995/2/Tuffen_PTRSL.pdf">increase in volcanic activity</a>.</p> <p>The correlation between climate warming and more volcanic eruptions isn’t yet well constrained or understood. But it may be related to <a href="https://pubs.er.usgs.gov/publication/70182772">changes in</a> stress to the Earth’s crust as the weight of ice is removed, and a phenomenon called “<a href="http://people.rses.anu.edu.au/lambeck_k/pdf/152.pdf">isostatic rebound</a>” – the long-term uplift of land in response to the removal of ice sheets.</p> <p>If this correlation holds for the current period of climate warming and melting of ice in high latitudes, there’ll be an increased risk of volcanic eruptions and associated hazards, including tsunamis.</p> <h2>5. Increased earthquakes</h2> <p>There are a number ways climate change can increase the frequency of earthquakes, and so increase tsunami risk.</p> <p>First, the weight of ice sheets may be <a href="https://royalsocietypublishing.org/doi/10.1098/rsta.2010.0031">suppressing fault movement and earthquakes</a>. When the ice melts, the isostatic rebound (land uplift) is accompanied by an increase in earthquakes and fault movement as the crust adjusts to the loss of weight.</p> <p>We may have seen this already in <a href="http://www.geotimes.org/oct04/NN_glacier.html">Alaska</a>, where melting glaciers reduced the stability of faults, inducing many small earthquakes and <a href="https://www.sciencedirect.com/science/article/pii/S0921818104000487?casa_token=BGo_KzIOuJkAAAAA:UHyQvV-tvVulwAfvOFPJILcG2206iyZhOM9TCVS_VAh0UdLimWrfu_NJRTHJVtwlKBL0cfA">possibly the magnitude 7.2 St Elias earthquake</a> in 1979.</p> <p>Another factor is low air pressure associated with storms and typhoons, which studies have also shown can trigger earthquakes in areas where the Earth’s crust is already under stress. Even relatively small changes in air pressure can trigger fault movements, as <a href="https://www.nature.com/articles/nature08042">an analysis</a> of earthquakes between 2002 and 2007 in eastern Taiwan identified.</p> <h2>So how can we prepare?</h2> <p>Many mitigation strategies for climate change should also include elements to improve tsunami preparedness.</p> <p>This could include incorporating projected sea level rise into tsunami prediction models, and in building codes for infrastructure along vulnerable coastlines.</p> <p>Researchers can also ensure scientific models of climate impacts include the projected increase in earthquakes, landslides and volcanic activity, and the increased tsunami risk this will bring.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><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/175247/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><span><a href="https://theconversation.com/profiles/jane-cunneen-290217">Jane Cunneen</a>, Adjunct Research Fellow, <em><a href="https://theconversation.com/institutions/curtin-university-873">Curtin University</a></em></span></p> <p>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/5-ways-climate-change-increases-the-threat-of-tsunamis-from-collapsing-ice-shelves-to-sea-level-rise-175247">original article</a>.</p> <p><em>Image: Shutterstock</em></p>

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"Poise under pressure": Woman snaps selfie as car sinks in ice

<p><em>Image: Twitter<br /></em></p> <p>A woman In Canada has been criticised for appearing to take a selfie from the roof of her submerged car as it sunk in a frozen lake.</p> <p>The woman’s car became submerged after breaking through ice on the Rideau River in Ottawa on Sunday afternoon, requiring her to be rescued. Ottawa Police tweeted that local residents had come to her aid using “a kayak and quick thinking”.</p> <p>Video obtained by 580 CFRA shows people rushing towards the woman with a kayak as she stands on top of her yellow car.</p> <blockquote class="twitter-tweet"> <p dir="ltr">NEW: Neighbours use kayaks to rescue driver after car crashes through ice in Manotick <a href="https://twitter.com/hashtag/ottnews?src=hash&amp;ref_src=twsrc%5Etfw">#ottnews</a> <a href="https://t.co/dhANorovWK">https://t.co/dhANorovWK</a></p> — CTV Ottawa (@ctvottawa) <a href="https://twitter.com/ctvottawa/status/1482873513782525952?ref_src=twsrc%5Etfw">January 17, 2022</a></blockquote> <p>Resident Zachary King told CTV News Ottawa he and his neighbour Rob Crober were the ones who rescued the woman. "It’s like everything worked out perfectly,” he told the station.</p> <p>“Got her on the kayak, pulled her in. And as soon as we pulled her in, the car went under. Fully."</p> <p>Video shot by resident Sacha Gera appears to show the woman driving on the ice at speed ahead of the rescue. It was reported that nobody was injured.</p> <p>Police said it served as an example that people should not drive across ice even when it looks safe.</p> <p>It seems the woman spent her time waiting to be rescued snapping a selfie while on the roof of her car. “She captured the moment with a selfie while people hurried and worried to help her,” Lynda Douglas tweeted, along with a photo.</p> <p>“Any time you are in a dangerous situation, you should not be taking selfies or doing anything distracting. You should be 100 per cent focused on being safe,” another man tweeted.</p> <p>However, others were far less critical. “She's waiting to be rescued. What the hell else is she supposed to do?” one man tweeted.</p> <p>“I appreciate her poise under pressure.”</p> <p>Regardless, the drive on the ice has proven costly for the woman, with her car being written off. Police have also charged her with an offence.</p>

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Sweet gesture as funeral for "King of the Ice Cream" melts hearts around the world

<p><em>Image: Twitter </em></p> <p>A very sweet ice cream man's unique funeral procession has melted hearts all over the internet.</p> <p>The clip, filmed in the London area of Camberwell, shows a procession of ice cream vans following a hearse, all while playing the classic ice cream van jingle to farewell their fellow comrade.</p> <p>As the hearse drove down the road, around seven colourful ice cream vans slowly followed behind while the sweet music blared through the streets.</p> <p>Twitter user Louisa Davies posted the footage online after the sounds of the procession woke her up, admitting the heart-warming gesture left her "sobbing".</p> <p>"Just witnessed an ice cream man's funeral and all the ice cream vans came and followed in solidarity I AM SOBBING," Louisa wrote.</p> <p>The video quickly went viral, with Louisa's clip alone attracting a staggering 11 million views.</p> <blockquote class="twitter-tweet"> <p dir="ltr">just witnessed an ice cream man’s funeral and all the ice cream vans came and followed in solidarity I AM SOBBING <a href="https://t.co/bJhyJj4JoK">pic.twitter.com/bJhyJj4JoK</a></p> — Louisa Davies (@LouisaD__) <a href="https://twitter.com/LouisaD__/status/1471779181667225603?ref_src=twsrc%5Etfw">December 17, 2021</a></blockquote> <p>As per the Daily Mail, the funeral was held for 62-year-old Hasan Dervish, a man who was described as the "King of the ice cream" by his brother, Savash.</p> <p>Savash wrote: "Rest in eternal peace my brother. King of the ice cream."</p> <p>Louisa told the publication she didn't know the driver but was moved by the sweet send-off.</p> <p>"I'd never seen anything like this before so was quite shocked at first but then thought it was just the nicest most heart-warming send0-off," she said.</p> <p>"I'd like to send my respects to the family and let them know this procession brought joy to a lot of people today."</p>

Caring