"News from Mars," CNN reported Friday. "Not just that water was there, perhaps millions of years ago, but also these organic compounds."

In an interview with the head of Earth Sciences collections at the UK's Natural History Musem, CNN asked the million-dollar question. "How much more likely, if you believe so, that that makes it that there was life on Mars at some time." A: So what we've found with data that's come back from the Rover and has been studied over the last few months is that we see igneous rocks -- so these are rocks that have been formed through volcanic processes -- which have also been affected by the action of liquid water.

And that's really really interesting and exciting, because liquid water is one of the key ingredients you need for life to start. So if you've got the chances of life ever being on Mars, you'd need to have somewhere that had liquid water for at least a period of time. And we've got good evidence for that.

Now that's combined with the fact that we're seeing, using instruments like SHERLOCK, which is an instrument that I'm involved with, also the presence of organic molecules. And organic molecules are chemical molecules made of the elements carbon, hydrogen, oxygen, nitrogen, sometimes bits of sulfur, sometimes bits of phosphorous, and maybe some added-up things. And those are really really important, because you need organic molecules for life to start.

And the other thing that's really interesting about organic molecules is they can actually be sort of fossil chemical evidence of potential past life.

"Rice University researchers have engineered a key light-activated nanomaterial for the hydrogen economy," the University announced this week.

"Using only inexpensive raw materials, a team from Rice's Laboratory for Nanophotonics, Syzygy Plasmonics Inc. and Princeton University's Andlinger Center for Energy and the Environment created a scalable catalyst that needs only the power of light to convert ammonia into clean-burning hydrogen fuel...." The research follows government and industry investment to create infrastructure and markets for carbon-free liquid ammonia fuel that will not contribute to greenhouse warming. Liquid ammonia is easy to transport and packs a lot of energy, with one nitrogen and three hydrogen atoms per molecule. The new catalyst breaks those molecules into hydrogen gas, a clean-burning fuel, and nitrogen gas, the largest component of Earth's atmosphere. And unlike traditional catalysts, it doesn't require heat. Instead, it harvests energy from light, either sunlight or energy-stingy LEDs....

"This discovery paves the way for sustainable, low-cost hydrogen that could be produced locally rather than in massive centralized plants," said Peter Nordlander, also a Rice co-author.
Thanks to long-time Slashdot reader fahrbot-bot for submitting the story (via Phys.org.

About an hour ago SpaceX began tweeting video highlights of their latest launch — a NASA-commissioned resupply mission for the International Space Station.

- "Liftoff!"

- "Falcon 9's first stage has landed on the Just Read the Instructions droneship"

- "Dragon separation confirmed; autonomous docking to the Space Station on Sunday, November 27 at ~7:30 a.m. ET"

You can watch the whole launch on SpaceX's web site. But CNN explains that SpaceX "has launched more than two dozen resupply missions to the space station over the past decade as part of a multibillion-dollar deal with NASA. This launch comes amid SpaceX's busiest year to date, with more than 50 operations so far, including two astronaut missions."

And yet this one carries something unique. (And it's not just the Thanksgiving-themed treats and solar arrays to boost the space station's power...) Nutrients are a key component of maintaining good health in space. But fresh produce is in short supply on the space station compared with the prepackaged meals astronauts eat during their six-month stays in low-Earth orbit. "It is fairly important to our exploration goals at NASA to be able to sustain the crew with not only nutrition but also to look at various types of plants as sources for nutrients that we would be hard-pressed to sustain on the long trips between distant destinations like Mars and so forth," said Kirt Costello, chief scientist at NASA's International Space Station Program and a deputy manager of the ISS Research Integration Office.

Astronauts have grown and tasted different types of lettuce, radishes and chiles on the International Space Station. Now, the crew members can add some dwarf tomatoes — specifically, Red Robin tomatoes — to their list of space-grown salad ingredients. The experiment is part of an effort to provide continuous fresh food production in space.... The space tomatoes will be grown inside small bags called plant pillows installed in the Vegetable Production System, known as the Veggie growth chamber, on the space station. The astronauts will frequently water and nurture the plants....

The hardware is still in development for larger crop production on the space station and eventually other planets, but scientists are already planning what plants might grow best on the moon and Mars. Earlier this year, a team successfully grew plants in lunar soil that included samples collected during the Apollo missions. "Tomatoes are going to be a great crop for the moon," Massa said. "They're very nutritious, very delicious, and we think the astronauts will be really excited to grow them there."

A universal flu vaccine that protects against all strains of the virus could be available in the next two years, according to a leading scientist. From a report: An experimental vaccine based on the same mRNA technology used in the highly successful Covid jabs was found to protect mice and ferrets against severe influenza, paving the way for clinical trials in humans. Prof John Oxford, a neurologist at Queen Mary University in London, who was not involved in the work, said the vaccine developed at the University of Pennsylvania could be ready for use the winter after next.

"I cannot emphasise enough what a breakthrough this paper is," Oxford told the BBC's Radio 4 Today programme. "The potential is huge, and I think sometimes we underestimate these big respiratory viruses." Researchers have been working on universal flu vaccines for more than a decade, but the latest breakthrough, published in Science, is seen as a major step towards a jab that could help protect humans from a potentially devastating flu pandemic. Seasonal flu vaccines, which protect against up to four strains of the virus, are updated every year to ensure they are a good match for flu viruses in circulation. The new vaccine is designed to prime the immune system against all 20 subtypes of influenza A and B, potentially arming the body to tackle any flu virus that arises.

U.S. health regulators this week approved the first gene therapy for hemophilia, a $3.5 million one-time treatment for the blood-clotting disorder. From a report: The Food and Drug Administration cleared Hemgenix, an IV treatment for adults with hemophilia B, the less common form of the genetic disorder which primarily affects men. Currently, patients receive frequent, expensive IVs of a protein that helps blood clot and prevent bleeding. Drugmaker CSL Behring, based in Pennsylvania, announced the $3.5 million price tag shortly after the FDA approval, saying its drug would ultimately reduce health care costs because patients would have fewer bleeding incidents and need fewer clotting treatments.

According to a study cited by the National Library of Medicine, the price makes Hemgenix the most expensive medicine in the world, easily topping Novartis' Zolgensma gene therapy for spinal muscular atrophy (SMA), which costs right around $2 million per dose and is also a single-dose medicine. Like most medicines in the U.S., most of the cost of the new treatment will be paid by insurers, not patients, including private plans and government programs. After decades of research, gene therapies have begun reshaping the treatment of cancers and rare inheritable diseases with medicines that can modify or correct mutations embedded in people's genetic code. Hemgenix is the first such treatment for hemophilia and several other drugmakers are working on gene therapies for the more common form of the disorder, hemophilia A.

The European Space Agency on Wednesday named the first ever "parastronaut" in a major step towards allowing people with physical disabilities to work and live in space. Reuters reports: The 22-nation agency said it had selected former British Paralympic sprinter John McFall as part of a new generation of 17 recruits picked for astronaut training. He will take part in a feasibility study designed to allow ESA to assess the conditions needed for people with disabilities to take part in future missions. He will join five new career astronauts and 11 reserves in training after ESA replenished its astronaut ranks for the first time since 2009.

Following a motorcycle accident that led to his right leg being amputated at the age of 19, McFall went on to win the 100-metres Bronze Medal at the Beijing Paralympic Games in 2008. The 31-year-old doctor will help ESA engineers design changes in hardware needed to open professional spaceflight to a wider group of qualified candidates, the agency said. "It's been quite a whirlwind experience, given that as an amputee, I'd never thought that being an astronaut was a possibility, so excitement was a huge emotion," McFall said in an interview posted on ESA's website.

"I think the message that I would give to future generations is that science is for everyone and space travel hopefully can be for everyone," McFall said.

Can a change in the weather trigger a landslide? Sometimes, yes, according to research. From a report: Most landslides are set in motion by an earthquake or torrential rain, but some have no obvious trigger. In 2009, scientists were stunned to discover that the stop-start Slumgullion landslide in the Rocky Mountains -- which has been inching down the hillside for 700 years -- is triggered by changes in atmospheric pressure. So is Slumgullion a rare exception? To find out, scientists fed weather and landslide data from Taiwan -- whose typhoons and steep hills create a perfect natural landslide laboratory -- into a landslide model. Their results, which are published in Natural Hazards and Earth System Sciences, demonstrate that when the eye of a storm passes over a hillside, the change in atmospheric pressure can provide the final push, but its ability to do this depends upon the weather over the preceding months.

An anonymous reader shares a report: In April 1992, Vanessa Williams' "Save the Best for Last" topped the Billboard 100, Arkansas Gov. Bill Clinton was running for the White House, "Who's the Boss?" aired its final episode, and the babies born to Rachel and Philip Ridgeway a couple of weeks ago were frozen as embryos. Born on October 31, Lydia and Timothy Ridgeway were born from what may be the longest-frozen embryos to ever result in a live birth, according to the National Embryo Donation Center. The previous known record holder was Molly Gibson, born in 2020 from an embryo that had been frozen for nearly 27 years. Molly took the record from her sister Emma, who was born from an embryo that had been frozen for 24 years. It's possible an older frozen embryo may have been used; although the US Centers for Disease Control and Prevention tracks success rates and data around reproductive technologies, it does not track how long embryos have been frozen. But there's no evidence of an older embryo resulting in a live birth.

"There is something mind-boggling about it," Philip Ridgeway said as he and his wife cradled their newborns in their laps at their home outside Portland, Oregon. "I was 5 years old when God gave life to Lydia and Timothy, and he's been preserving that life ever since. In a sense, they're our oldest children, even though they're our smallest children," Ridgeway added. The Ridgeways have four other children, ages 8, 6, 3 and almost 2, none conceived via IVF or donors. The embryos were created for an anonymous married couple using in-vitro fertilization. The husband was in his early 50s, and they used a 34-year-old egg donor. The embryos were frozen on April 22, 1992.

Longtime Slashdot reader BenFenner writes: While Chromium recently abandoned the JPEG-XL format (to much discussion on the feature request), it seems the Pale Moon browser quietly became the first to release support for the much-awaited image format. For those unfamiliar with Pale Moon, it is a Goanna-based web browser available for Windows, Linux and Android, focusing on efficiency and ease of use. Pale Moon 31.4.0 also adds support for MacOS 13 "Ventura" and addresses a number of performance- and security-related issues. A full list of the changes/fixes are available in the release notes.

Support for JPEG-XL was confirmed on GitHub.

SonicSpike shares a report from Futurism: It appears that NASA's Artemis 1 rocket launch pad caught way more damage than expected when it finally took off from Kennedy Space Center last week. As Reuters space reporter Joey Roulette tweeted, a source within the agency said that damage to the launchpad "exceeded mission management's expectations," and per his description, it sounds fairly severe.

"Elevator blast doors were blown right off, various pipes were broken, some large sheets of metal left laying around," the Reuters reporter noted in response to SpaceNews' Jeff Foust, who on Friday summarized a NASA statement conceding that the launchpad's elevators weren't working because a "pressure wave" blew off the blast doors. Shortly after the launch, NASA acknowledged that debris was seen falling off the rocket, though officials maintain that it caused "no additional risk" to the mission. In spite of those sanguine claims, however, reporters revealed that NASA seemed very intent on them not photographing the Artemis launch tower -- and now, with these preliminary reports about how messed up it seems to have gotten, we may know why.

Nasa's Orion capsule reached the moon on Monday, whipping around the back side and passing within 80 miles of the surface on its way to a record-breaking lunar orbit. From a report: The close approach occurred as the crew capsule and its three test dummies were on the far side of the moon. Because of the half-hour communication blackout, flight controllers in Houston did not know if the critical engine firing went well until the capsule emerged from behind the moon, more than 232,000 miles from Earth.

It's the first time a capsule has visited the moon since Nasa's Apollo program 50 years ago, and represented a huge milestone in the $4.1bn test flight that began last Wednesday after Orion launched into space atop the massive Artemis rocket. Orion's flight path took it over the landing sites of Apollo 11, 12 and 14 -- humankind's first three lunar touchdowns. The moon loomed ever larger in the video beamed back earlier in the morning, as the capsule closed the final few thousand miles since blasting off last Wednesday from Florida's Kennedy Space Center, atop the most powerful rocket ever built by Nasa. "This is one of those days that you've been thinking about and talking about for a long, long time," flight director Zeb Scoville said while waiting to resume contact. As the capsule swung out from behind the moon, onboard cameras sent back a picture of Earth, a blue dot surrounded by blackness.

As warming waters devastate coral around the world, the sea's stunningly colorful reefs have been remarkably resilient. But pollution, mass tourism and overfishing put them at risk. From a report: The vast majority of the world's coral reefs are likely to be severely damaged in the coming decades if the planet keeps warming at its current rate. But the wildly colorful coral reefs in the waters outside the Egyptian Red Sea resort of Sharm el Sheikh, where the annual United Nations climate conference is taking place, are an anomaly: They can tolerate the heat, and perhaps even thrive in it, making them some of the only reefs in the world that have a chance of surviving climate change. There is a limit to how much they can take, however.

Mass tourism at Egypt's beach resorts, overfishing, overdevelopment, pollution, occasional failures of the sewage system, sediment from construction and oil spills from tankers or terminals have put them at risk, according to marine biologists who study the Red Sea. "If not the last, this could be one of the last coral refuges worldwide," said Dr. Mahmoud Hanafy, a marine biology professor at the Suez Canal University in Egypt. "Protection of this reef is not a national responsibility or a national task. It's a global task." The exquisite beauty of the more than 200 species of coral, living in crystal clear waters of the northern Red Sea in temperatures that can top 85 degrees Fahrenheit, has made the area a scuba diver's paradise. Throughout the two-week climate meeting, conference attendees -- including John Kerry, the United States climate envoy -- took a break from the conference halls to experience the corals for themselves.

Funding for scientific research has become risk-averse, favoring established researchers pursuing incremental discoveries, critics say. From a report: In August President Biden signed into law a massive boost to scientific research: roughly $200 billion, when fully funded, over the next several years. The bipartisan law's premise is straightforward. In the long run economic growth depends on innovation, which in turn flows from how much we spend on research and development. The problem with that premise is the U.S. already spends plenty on R&D, about 3% of gross domestic product in recent years. That exceeds the peaks of the early 1960s during the space race. But the fruits of that effort have been elusive. Total factor productivity, the best metric for innovation's contribution to growth, grew just 0.5% a year over the past decade, half its rate of the 1960s. Other evidence suggests breakthroughs, such as new drug discoveries, are becoming more expensive and time-consuming, and researchers spend ever more years acquiring training and experience before achieving novel discoveries. In other words, the U.S. is getting progressively less bang for its scientific buck.

Patrick Collison, the Irish-born co-founder of payments technology company Stripe, has spent a lot of the past five years pondering the problem of declining scientific productivity. One popular theory he rejects: the most important discoveries have been made and new insights are more incremental and difficult. That might be true of individual fields, such as physics, but can't be true generally, he argues. "Every discovery opens up new frontiers and new questions and new possible avenues of investigation," he said in an interview. "The surface area of our knowledge is continually expanding. Just like we are not exhausting the creative possibilities of the English language, because words can be combined in an infinite number of ways, it does not seem to me we are running out of possibilities of discovery in computer science."

Research inputs -- dollars and hours spent -- are a lousy measure of innovation, he added. It doesn't require more resources to make a hit movie or bestselling novel than a dud. The most innovative companies aren't necessarily the biggest spenders. Tesla's R&D spending in the past three years is 13% of that of General Motors and Ford Motor combined. Yet Tesla's market value is more than five times its two rivals.' Clearly, scientific productivity has something to do with how research is done, not how much. One culprit, in the view of Mr. Collison and many others, is that the institutions that fund science have become process-oriented, narrow-minded and risk-averse. Wary of failure, they favor established researchers pursuing narrowly focused, incremental ideas over younger scientists with more heterodox agendas.

The BBC reports: Leprosy bacteria may hold the secret to safely repairing and regenerating the body, researchers at the University of Edinburgh say. Animal experiments have uncovered the bacteria's remarkable ability to almost double the size of livers by stimulating healthy growth.

It is a sneakily selfish act that gives the bacteria more tissue to infect. But working out how they do it could lead to new age-defying therapies, the scientists say....

The bacterium that causes [leprosy], Mycobacterium leprae, has other, unusual properties, including the ability to perform "biological alchemy", converting one type of bodily tissue into another, which are fascinating scientists. So the researchers turned to another animals that catches the disease — armadillos. The experiments, which were performed in the US, showed the infection heads to the armoured animals' livers, where it performed a controlled hijacking of the organ to reprogram it for its own purpose.... You might expect such growth to be defective or even cancerous — but detailed analysis showed it was both healthy and functional, complete with the usual array of blood vessels and bile ducts.

"It is kind of mind-blowing," Prof Rambukkana said. "How do they do that? There is no cell therapy that can do that."
The bacteria appears to be "rewinding the developmental clock" on the liver cells, the BBC writes, transforming them into a younger, faster-growing state. "The hope is the approach can be harnessed for repairing the livers of people waiting for a transplant — or even to reverse some of the damage caused by ageing elsewhere in the body."

Thanks to long-time Slashdot reader Z00L00K for submitting the story!

"With new COVID variants and subvariants evolving faster and faster, each chipping away at the effectiveness of the leading vaccines, the hunt is on for a new kind of vaccine," reports the Daily Beast, "one that works equally well on current and future forms of the novel coronavirus.

"Now researchers at the National Institutes of Health in Maryland think they've found a new approach to vaccine design that could lead them to a long-lasting jab. As a bonus, it also might work on other coronaviruses, not just the SARS-CoV-2 virus that causes COVID-19." The NIH team reported its findings in a peer-reviewed study that appeared in the journal Cell Host & Microbe earlier this month.

The key to the NIH's potential vaccine design is a part of the virus called the "spine helix." It's a coil-shaped structure inside the spike protein, the part of the virus that helps it grab onto and infect our cells. Lots of current vaccines target the spike protein. But none of them specifically target the spine helix. And yet, there are good reasons to focus on that part of the pathogen. Whereas many regions of the spike protein tend to change a lot as the virus mutates, the spine helix doesn't.

That gives scientists "hope that an antibody targeting this region will be more durable and broadly effective," Joshua Tan, the lead scientist on the NIH team, told The Daily Beast....

A vaccine that binds the spine helix in SARS-CoV-2 should hold up for a long time. And it should also work on all the other coronaviruses that also include the spine helix — and there are dozens of them, including several such as SARS-CoV-1 and MERS that have already made the leap from animal populations and caused outbreaks in people....

Maybe a spine-helix jab is in our future. Or maybe not. Either way, it's encouraging that scientists are making incremental progress toward a more universal coronavirus vaccine. One that could work for many years on a wide array of related viruses.

hardaker writes: I wrote up the results from studying graphs of CO2 measurement data during a trip I took from Sacramento, California to London to attend the IETF-115 conference. Since CO2 is considered to be a potential proxy for measuring exposure to airborne viruses, it provided me with a rough guess about how safe (or not) I was at various points of my travel.

TL;DR: big conference rooms: good, busses: bad, everything else: in between.
"Numbers alone do not effectively measure risk absolutely," the page concludes. "You must combine numbers with logic and common sense. Airlines with good filtering systems are likely ok. But do aim the fans at you with maximum air flow..."

"Hallways and crowded coffee tables are where we need to worry the most. Unfortunately, the masking policy at IETF-115 was sort of backward: in the rooms the circulation was quite good, but in all my graphs you can see a spike as I wandered from one room to another, and this is where masking policies were more lax allowing participants to remove their masks."

"Last week's collapse of the cryptocurrency exchange FTX is sending aftershocks through the scientific community," writes Science magazine: An undergraduate physics major at the Massachusetts Institute of Technology (MIT) who founded FTX and quickly became a billionaire, 30-year-old Sam Bankman-Fried began to back philanthropic organizations that supported a wide variety of science-related causes, most designed to improve human well-being. Now, with FTX in bankruptcy and under investigation for misuse of investors' money, his formerly flush foundations are suddenly strapped for cash and much of that work is at risk. One foundation, the Future Fund, was just launched in February. But by the end of June, its officials reported awarding 262 grants and "investments" totaling $132 million.

It's unclear how much of that money has been distributed. But on 10 November, five senior Future Fund officials resigned and announced in a statement, "We are devastated to say that it looks likely that there are many committed grants that the Future Fund will be unable to honor...."

Just what will happen to awards the Future Fund and the similar FTX Foundation have already made remains unclear. FTX owes billions of dollars to creditors and is now being investigated by the U.S. Securities and Exchange Commission and the Department of Justice, according to The Wall Street Journal. Writing in an online forum hosted by the Center for Effective Altruism, to which the Future Fund pledged nearly $14 million, Molly Kovite, legal operations manager for the Open Philanthropy foundation, noted that FTX's creditors could try to "claw back" their investments during bankruptcy proceedings. If grantees received awards after 11 August, which is 90 days prior to the bankruptcy filing, "the bankruptcy process will probably ask you, at some point, to pay all or part of that money back" she predicts.

That has grantees wondering how they will pay the bills. "Everyone is obviously really worried," Morrison says.
Thanks to Slashdot reader sciencehabit for submitting the article.

"Get ready: Neurotechnology is coming to the workplace," claims IEEE Spectrum: Neural sensors are now reliable and affordable enough to support commercial pilot projects that extract productivity-enhancing data from workers' brains.

These projects aren't confined to specialized workplaces; they're also happening in offices, factories, farms, and airports. The companies and people behind these neurotech devices are certain that they will improve our lives. But there are serious questions about whether work should be organized around certain functions of the brain, rather than the person as a whole.

To be clear, the kind of neurotech that's currently available is nowhere close to reading minds. Sensors detect electrical activity across different areas of the brain, and the patterns in that activity can be broadly correlated with different feelings or physiological responses, such as stress, focus, or a reaction to external stimuli. These data can be exploited to make workers more efficient — and, proponents of the technology say, to make them happier. Two of the most interesting innovators in this field are the Israel-based startup InnerEye, which aims to give workers superhuman abilities, and Emotiv, a Silicon Valley neurotech company that's bringing a brain-tracking wearable to office workers, including those working remotely....

EEG has recently broken out of clinics and labs and has entered the consumer marketplace. This move has been driven by a new class of "dry" electrodes that can operate without conductive gel, a substantial reduction in the number of electrodes necessary to collect useful data, and advances in artificial intelligence that make it far easier to interpret the data. Some EEG headsets are even available directly to consumers for a few hundred dollars.

Having trouble falling asleep, a writer for Vulture pondered a study from February in the Journal of Sleep Research that "runs refreshingly counter to common sleep-and-screens wisdom." For years, science and conventional wisdom have stated unequivocally that looking at a device — like a smartphone, tablet, laptop, or television — before bed is akin to lighting years of your natural life on fire, then letting the flames consume your children, your community, and the very concept of human progress....

Specifically interested in the use of "entertainment media" (streaming services, video games, podcasts) before bed, [the new February study's] researchers asked a group of 58 adults to keep a sleep diary and found that, if participants consumed entertainment media in the hour before bed, the habit was associated with an earlier bedtime as well as more sleep overall (though the benefits diminished if participants binged for longer than an hour or multitasked on their phones). Essentially, these researchers explored screen use before bed as a form of relaxation rather than a form of self-harm, which is exactly how I and probably 5 billion other people use it — as a way of distracting our minds from the onslaught of material reality just before we drift off to temporary oblivion.
Vulture's writer interviews Dr. Morgan Ellithorpe, one of the authors of the Journal of Sleep Research study and an assistant professor in the Department of Communication at the University of Delaware who specializes in media psychology. Dr. Ellithorpe is a proponent of intentional media use as a way to relieve stress, but she tells me that, in her research, she's found that the worst types of media to absorb before bed are those that have no "stopping point" — Instagram, TikTok, shows designed to be binge-watched. If you intend to binge a show, that might be fine: "Making a plan and sticking to it seems to matter," she says. We agree that humans are famously bad at that, and that's where the problems begin. The solution, Dr. Ellithorpe says, is figuring out why we're on our screens and if that reason is "meaningful." Are we turning to a screen in order to recover from an eventful day? Because we want something to talk about with our friends? Because we're seeking, as she puts it, a moment of "hedonic enjoyment"? The key is that you must be able to recognize when that need is fulfilled. Then "you're likely to have a good experience, and you won't need to force yourself to stop. But it takes practice."

Dr. Ellithorpe cites several studies for me to review — on gratification, mood-management theory, selective exposure, and self-determination theory — all of which, to various extents, grapple with the notion that human beings can make decisions to use media for purposeful things. "There's this push now to realize that people aren't a monolith, and media uses that seem bad for some people can actually be really good for other people." Although many researchers like Dr. Ellithorpe and her cohort are onboard with this push, she admits that "the movement has not filtered out to the public yet. So the public is still on this kick of 'Oh, media's bad.'"

And that's a huge part of the issue. "We sabotage ourselves when it comes to benefiting from media because we've been taught in our society to feel guilty for spending leisure time with media," Dr. Ellithorpe says. "The research in this area suggests that people who want to use media to recover from stress, if they then feel bad about doing so, they don't actually get the benefit from the media use."

But even Dr. Ellithorpe is prone to unintentional sleep moralizing, saying she is often "bad" and "on her phone two seconds before I turn off the light." She recommends watching a "low-challenge show" before bed and, like Dr. Kennedy, cites Stranger Things specifically as a dangerous pre-bed content choice because "you have to keep track of all the characters, remember what happened three seasons ago, and it's emotionally charged. It might be difficult afterward to come down from that and go to bed." In the end, she suggests watching whatever you want as long as it doesn't delay your bedtime.

The Guardian notes that "While leap seconds pass by unnoticed for most people, they can cause problems for a range of systems that require an exact, uninterrupted flow of time, such as satellite navigation, software, telecommunication, trade and even space travel."

So now Nature magazine reports that "The practice of adding 'leap seconds' to official clocks to keep them in sync with Earth's rotation will be put on hold from 2035, the world's foremost metrology body has decided." The decision was made by representatives from governments worldwide at the General Conference on Weights and Measures (CGPM) outside Paris on 18 November. It means that from 2035, or possibly earlier, astronomical time (known as UT1) will be allowed to diverge by more than one second from coordinated universal time (UTC), which is based on the steady tick of atomic clocks. Since 1972, whenever the two time systems have drifted apart by more than 0.9 seconds, a leap second has been added....

Facebook's parent company, Meta, and Google are among the tech companies that have called for leap seconds to be scrapped. The CGPM — which also oversees the international system of units (SI) — has proposed that no leap second should be added for at least a century, allowing UT1 and UTC to slide out of sync by about 1 minute. But it plans to consult with other international organizations and decide by 2026 on what upper limit, if any, to put on how much they be allowed to diverge....

Although in the long term Earth's rotation slows due to the pull of the Moon, a speed-up since 2020 has also made the issue more pressing, because for the first time, a leap second might need to be removed, rather than added. UTC has only ever had to slow a beat to wait for Earth, not skip ahead to catch up with it. "It's kind of being described as a Y2K issue, because it's just something that we've never had to deal with," said Elizabeth Donley, who leads the Time and Frequency division at the National Institute of Standards and Technology, in Boulder, Colorado.