A terrifying thing happens to astronauts' fingernails on a spacewalk
Going on a spacewalk might sound like a lot of fun – but in reality it’s no walk in the park. From their muscles getting less dense all the way to erectile dysfunction, astronauts have to put up with all sorts of things going wrong with their body. And none more gross than what happens to their fingernails. Turns out they just fall right off. The technical term for this is onycholysis, and it has to do with how much – or how little – atmospheric pressure there is in space. Because there is so little ambient pressure in space, astronaut’s space suits need to be pressurised to keep the human body intact. But that’s not good for the hands, it turns out. “Injuries to the hands are common among astronauts who train for extravehicular activity (EVA),” says a 2015 conference paper by space specialists Wyle Laboratories. “When the gloves are pressurized, they restrict movement and create pressure points during tasks, sometimes resulting in pain, muscle fatigue, abrasions, and occasionally more severe injuries such as onycholysis. “Glove injuries, both anecdotal and recorded, have been reported during EVA training and flight persistently through NASA's history regardless of mission or glove model." A 2010 study looked at 232 hand injuries sustained by astronauts, and found that the wider your knuckle joints, the more likely you are to suffer in a space suit. The study suggested that because space suit gloves limit the mobility of these knuckles, the fingers then get put under more pressure. This, in turn, means less blood gets to the fingers, and risks onycholysis. Ouch. Work has been done to try to improve the design of space suit gloves, of course. One team found that the more tailored they were to each astronaut’s finger length the less likely they were to lose their fingernails. That’s no mean feat, however. These gloves are made of at least four layers: one which touches the skin, one which helps create the pressurised environment, another one which makes the pressure layer less stiff, and an outer layer which protects the astronaut from everything on the outside. Mercifully for NASA astronauts at least, they usually have their gloves fitted to each wearer, and with new space suit design moving forward each day, the number of injuries is decreasing. Nonetheless, it sounds like a trip to space is no time for a manicure. How to join the indy100's free WhatsApp channel Sign up to our free indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.
2023-11-28 21:50
Making Solar Panels Is 'Horrible' Business. The US Still Wants It.
In the next three years, 1TW of solar power will be added to the global grid as competition
2023-07-20 21:51
Saudi Arabia is quietly changing its textbooks. Could that lead to acceptance of Israel?
Textbooks in Saudi Arabia have been changing. For years, researchers have been observing a gradual moderation on subjects ranging from gender roles to the promotion of peace and tolerance.
2023-06-19 23:18
Elon Musk to live stream himself gaming on X in ‘everything app’ bid
Elon Musk has said he will live stream himself playing video games on X on Monday night as part of his goal of transforming the social media platform into an “everything app”. The tech billionaire previously tried to launch a gaming stream last week but ran into technical issues. “Tested the X video game streamer last night,” he posted on X on Monday. “It works!” The SpaceX and Tesla boss added that he would “try to complete a Tier 100 Nightmare dungeon” on Tuesday night during a live stream on X. Since taking over Twitter in October 2022, and renaming it to X in April 2023, Mr Musk has repeatedly stated his ambition to transform the social media platform into an “everything app”, starting by taking on streaming giants Twitch and YouTube. Similar to China’s WeChat, the app could eventually incorporate other functions and services like making payments, booking taxis or ordering food. Mr Musk has already secured money-transmitting licences in at least three US states, and has a history of building online payments platforms after co-founding PayPal. X chief executive Linda Yaccarino, who Mr Musk hired in June, laid out what this new version of the app might look like in a series of posts after joining the company. “X is the future state of unlimited interactivity – centred in audio, video, messaging, payments/banking – creating a global marketplace for ideas, goods, services, and opportunities. Powered by AI, X will connect us all in ways we’re just beginning to imagine,” she wrote. “For years, fans and critics alike have pushed Twitter to dream bigger, to innovate faster, and to fulfil our great potential. X will do that and more. We’ve already started to see X take shape over the past 8 months through our rapid feature launches, but we’re just getting started.” Before Mr Musk took over, Twitter had a video streaming feature called Periscope that was shut down in March 2021 due to declining usage. Mr Musk briefly tested the dormant feature in May 2023, though users dubbed him “8-bit Elon” due to the low quality resolution of the broadcast. Read More Elon Musk and the one trillion-dollar algorithm that explains everything he does Musk confirms he is cutting election integrity staff from X/Twitter ahead of 2024 Reddit will start paying people to post Tesla robot shown practising yoga
2023-10-02 20:59
WhatsApp set to add major features including a new username system, beta versions suggest
WhatsApp is developing a range of new features, including a new username system and a screen-sharing option during video calls. The username system will allow users to select a unique name attached to their account, WABetaInfo first reported, based on changes spotted in the app’s beta version 2.23.11.15 for Android. This may enable users to find each other through usernames instead of phone numbers in the future, with conversations using the username expected to be end-to-end encrypted. Beta testers of the app’s 2.23.11.19 version also found a new screen-sharing feature that reportedly enabled users to share the contents of their screen on video calls, also allowing people to record sections of the call. Some testers also reported finding a “status archive” feature, limited to business accounts, which enables users to archive their WhatsApp statuses after 24 hours and reshare them later in the future. These features appear to be under development and not yet available to all testers. They may be gradually rolled out to users. Other changes include a new “password reminder feature” for end-to-end encrypted backups on WhatsApp for iOS and Android as well as an improved support for message drafts. The latter is expected to help users who may forget about partially composed messages in the middle of conversations. The Meta-owned company previously did not indicate the presence of a message under drafts in the chat bar and the new indicator of unfinished messages at the top of the chat list may allow users to notice this. Some users may notice a few small changes in WhatsApp’s bottom navigation bar on downloading the beta for Android 2.23.11.19 update. A new icon and a prompt during video calls seem to help users share their screen. The feature records everything displayed on one’s screen and shares it with the recipient. But the recipient may be unable to get the content of the sharer’s screen in case they are using an outdated WhatsApp version. Potential wider accessibility of this feature, however, remains unclear as it may not work in large group calls. Read More Major WhatsApp update enables secret chats WhatsApp update fixes glaring irritation when using app WhatsApp update will let people edit messages after they are sent
2023-05-30 13:59
There's a sinister reason why you never see narwhals in aquariums
Narwhals are among the most elusive creatures in the ocean, with their long, spiralling tusks giving them an almost mythological quality. And whilst many people would pay good money to see these unicorns of the sea in the flesh, they are notably absent from the world’s aquariums. The reason for this is both dark and mysterious, since there have only been two attempts to keep the toothed whales in captivity. Both of these ended in tragedy and the general acceptance that narwhals simply don’t belong in our sealife centres. The legendary porpoises, which are related to belugas and orcas, are found in Arctic coastal waters and rivers. They have two teeth and, in males, the more prominent of these grows into the swordlike tusk which can be up to 10 feet long, according to National Geographic. Back in 1969, Coney Island’s New York Aquarium becoming the first-ever centre to put a narwhal on display. According to IFL Science, the aquarium became home to a young calf called Umiak, whose name referred to the canoe used to hunt the species in the High Arctic. It was captured by members of the Inuit community who said that it followed their canoe back to camp after they killed its mother for meat. Umiak was put in a tank alongside a female “white whale” (most likely a beluga), who acted as its stepmother. And although staff reportedly fed vast quantities of milk mixed with chopped clams to keep it happy, they weren’t able to keep it healthy. Less than a year after Umiak arrived at the centre, the orphaned narwhal died of pneumonia, as reported by The New York Times at the time. Still, the animal’s swift and tragic demise didn’t stop Canada’s Vancouver Aquarium from attempting the same feat in 1970. The aquarium had been gearing up to host a narwhal since 1968, when its director, Murray Newman, hoped that bringing narwhals to the city could generate interest in the species and help with its conservation, IFL Science reports. After two unsuccessful attempts to capture one of the whales themselves, Newman and his team were forced to buy a young male from a community of Inuit hunters based in Grise Fiord on Canada’s Ellesmere Island. The animal was reportedly called Keela Luguk – a phonetic spelling of the word “qilalugaq”, which means “narwhal” in some Inuktitut dialects. Within a week of Keela Luguk’s arrival at Vancouver Aquarium in August 1970, the centre had caught two female narwhals and three calves, which were then added to his tank. However, in less than a month, the three calves had died. And by November, the two females were also gone. As public outrage mounted, the mayor of Vancouver himself called for Keela Luguk to be returned to the wild. But Newman would not succumb to their pressure and, eventually, on 26 December that same year, the young whale was reported to have died too. It’s not known exactly why the narwhals fared so dismally in captivity, particularly given that the species’s closest relative, the beluga, can survive a number of years, or even decades, in aquarium facilities. However, the porpoises are known to be exceptionally sensitive animals, with studies finding that they are so affected by human-made noises that even the sound of a ship sailing near their habitat is enough to radically impact their behaviour. Fortunately, aquariums seem to have got the memo, and narwhals have largely been left to continue their lives as fabled enigmas of the sea. Sign up for our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.
2023-10-02 19:29
Amazon’s Best Labor Day Deals Have Arrived Early — Shop Them Here
Amazon is known for having the hottest deals on the internet 365 days a year, and things are heating up big time ahead of Labor Day weekend. Summer’s unofficial sendoff always comes with epic deals on big-ticket items like mattresses and furniture, but if you’re in the market for clever life upgrades, Amazon has you covered.
2023-08-18 04:28
Tim Scott pushes back on DeSantis over Florida curriculum: 'No silver lining' in slavery
Sen. Tim Scott of South Carolina pushed back Thursday against Republican rival Ron DeSantis over his state's new Black history curriculum, which says middle school students should be taught that enslaved people learned some skills they later used to their benefit.
2023-07-28 21:58
Why MrBeast is suing the company behind his burgers
MrBeast has confirmed that he is suing the company behind his burgers over quality control complaints, while also claiming not to have received payments. The YouTube star partnered with Virtual Dining Concepts back in 2020 to launch a chain of “ghost kitchens” which would act as “virtual restaurants” producing MrBeast Burgers. MrBeast, real name James Donaldson, is now taking legal action after the virtual chain was hit with complaints from users, Bloomberg reports. The lawsuit refers to the negative feedback from customers, reading: “Customers have referred to the burgers as being ‘disgusting’, ‘revolting,’ and ‘inedible'.” Sign up to our free Indy100 weekly newsletter “There are thousands of negative reviews, articles, and comments from people who are deeply disappointed by the fact that MrBeast would put his name on this product.” It continues: “Because the entire business is based on the tremendous global value of the MrBeast brand, it is MrBeast himself, and not Virtual Dining Concepts, who has borne the brunt of the (justified) attacks and criticisms.” The lawsuit also claims that MrBeast has not received payments. “To be clear, while this business has made millions of dollars, MrBeast has not received a dime,” it claims. MrBeast also responded to a user on Twitter who was unhappy with their experience ordering the burger by saying: “It’s impossible to guarantee the quality of orders with virtual restaurants. Hurts my soul to see orders messed up. Sadly I can’t get out of my deal with [MrBeast Burger]”, he said. “Hence why I’m never giving up control of Feastables so I can always do what’s best for my fans. Harsh lesson to learn.” Links to negative reviews and comments from customers are also included in the lawsuit. Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.
2023-08-01 20:27
JPMorgan Chase is fined by SEC after mistakenly deleting 47 million emails
By Jonathan Stempel NEW YORK (Reuters) -JPMorgan Chase has been fined $4 million by the U.S. Securities and Exchange Commission
2023-06-22 23:55
Overwatch 2 director reacts to game being 'review-bombed'
'Overwatch 2' was 'review-bombed' despite seeing an increase in new players.
2023-08-21 19:23
Get over 1,000 hours of cybersecurity training for under £60
TL;DR: An InfoSec4TC Platinum Membership is on sale for £55.46, saving you 75% on list
2023-05-14 12:20
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