Scientific papers containing lots of specialized terminology are less likely to be cited by other researchers. The New York Times reports: Polje, nappe, vuggy, psammite. Some scientists who study caves might not bat an eye, but for the rest of us, these terms might as well be ancient Greek. Specialized terminology isn't unique to the ivory tower -- just ask a baker about torting or an arborist about bracts, for example. But it's pervasive in academia, and now a team of researchers has analyzed jargon in a set of over 21,000 scientific manuscripts. They found that papers containing higher proportions of jargon in their titles and abstracts were cited less frequently by other researchers. Science communication -- with the public but also among scientists -- suffers when a research paper is packed with too much specialized terminology, the team concluded. These results were published Wednesday in Proceedings of the Royal Society B.

Jargon can be a problem, but it also serves a purpose, said Hillary Shulman, a communications scientist at Ohio State University. "As our ideas become more refined, it makes sense that our concepts do too." This language-within-a-language can be a timesaver, a way to precisely convey meaning, she said. However, it also runs the risk of starkly reminding people -- even some well-educated researchers -- that they aren't "in the know." "It's alienating," said Dr. Shulman.

sciencehabit shares a report from Science Magazine: Experiments that create tiny brainlike structures from human stem cells or transplant human cells into an animal's brain have made some scientists, ethicists, and religious leaders uneasy in recent years. And the National Institutes of Health (NIH) has restricted some of this research. Now, a U.S. scientific panel has weighed in with advice about how to oversee this controversial and fast-moving area of neuroscience. The panel finds little evidence that brain "organoids" or animals given human cells experience humanlike consciousness or pain, and concludes current rules are adequate for overseeing this work. But they caution that could change, particularly as experiments move into nonhuman primates. "The rationale for the report is to get out ahead of the curve," says Harvard University neuroscientist Joshua Sanes, co-chair of the National Academies of Sciences, Engineering, and Medicine committee that released its report today.

An anonymous reader quotes a report from Phys.Org: Ants react to social isolation in a similar way as do humans and other social mammals. A study by an Israeli-German research team has revealed alterations to the social and hygienic behavior of ants that had been isolated from their group. The research team was particularly surprised by the fact that immune and stress genes were downregulated in the brains of the isolated ants. [...] While the effects of isolation have been extensively studied in social mammals such as humans and mice, less is known about how social insects respond in comparable situations -- even though they live in highly evolved social systems. Ants, for instance, live their entire lives as members of the same colony and are dependent on their colony mates. The worker ants relinquish their own reproductive potential and devote themselves to feeding the larvae, cleaning and defending the nest, and searching for food, while the queen does little more than just lay eggs.

The research team looked at the consequences of social isolation in the case of ants of the species Temnothorax nylanderi. These ants inhabit cavities in acorns and sticks on the ground in European forests, forming colonies of a few dozen workers. Young workers engaged in brood care were taken singly from 14 colonies and kept in isolation for varying lengths of time, from one hour to a maximum of 28 days. The study was conducted between January and March 2019 and highlighted three particular aspects in which changes were observed. After the end of their isolation, the workers were less interested in their adult colony mates, but the length of time they spent in brood contact increased; they also spent less time grooming themselves. [...] While the study revealed significant changes in the behaviors of the isolated insects, its findings with regard to gene activity were even more striking: Many genes related to immune system function and stress response were downregulated. In other words, these genes were less active. "This finding is consistent with studies on other social animals that demonstrated a weakening of the immune system after isolation," said Professor Inon Scharf. The study has been published in the journal Molecular Ecology.

A series of problem-solving experiments reveal that people are more likely to consider solutions that add features than solutions that remove them, even when removing features is more efficient. Nature reports: Across a series of [...] experiments, the authors observe that people consistently consider changes that add components over those that subtract them -- a tendency that has broad implications for everyday decision-making. For example, Adams et al. and colleagues analyzed archival data and observed that, when an incoming university president requested suggestions for changes that would allow the university to better serve its students and community, only 11% of the responses involved removing an existing regulation, practice or program. Similarly, when the authors asked study participants to make a 10 x 10 grid of green and white boxes symmetrical, participants often added green boxes to the emptier half of the grid rather than removing them from the fuller half, even when doing the latter would have been more efficient.

Adams et al. demonstrated that the reason their participants offered so few subtractive solutions is not because they didn't recognize the value of those solutions, but because they failed to consider them. Indeed, when instructions explicitly mentioned the possibility of subtractive solutions, or when participants had more opportunity to think or practice, the likelihood of offering subtractive solutions increased. It thus seems that people are prone to apply a 'what can we add here?' heuristic (a default strategy to simplify and speed up decision-making). This heuristic can be overcome by exerting extra cognitive effort to consider other, less-intuitive solutions.

According to Reuters, Impossible Foods is preparing for a public listing which could value the U.S. plant-based burger maker at around $10 billion or more. From the report: This would be substantially more than the $4 billion the company was worth in a private funding round in 2020. It would highlight growing demand for plant-based meat products, driven by environmental and ethical concerns among consumers. Impossible Foods is exploring going public through an initial public offering (IPO) in the next 12 months or a merger with a so-called special purpose acquisition company (SPAC), the sources said.

The Redwood City, California-based company has worked with a financial adviser to help manage discussions with SPACs after receiving offers at a lucrative valuation, the sources said. Going public through a SPAC could dilute existing Impossible Foods shareholders, however, by a greater extent than an IPO, the sources added. The sources, who requested because the discussions are private, cautioned that the deliberations are subject to market conditions and the company may opt to pursue another private fundraising round.

The co-founder of Elon Musk's company Neuralink tweeted on Saturday that the startup has the technological advances and savvy to create its own "Jurassic Park." The Hill reports: "We could probably build Jurassic Park if we wanted to," Max Hodak tweeted Saturday. "Wouldn't be genetically authentic dinosaurs but [shrugging emoji]. maybe 15 years of breeding + engineering to get super exotic novel species." Hodak didn't further explain what technology Neuralink could use to engineer the long-extinct dinosaurs. It's worth noting that the tweet makes no mention of Neuralink, although one could presume Hodak is referring to the neurotechnology company because of his use of the word "we."

In response to the statement, which has been picked up by a variety of publications Wednesday, CNET's Jackson Ryan says we shouldn't expect a "real Jurassic Park" anytime soon -- or ever: [I]t's pretty much impossible to resurrect a dinosaur. The science of bringing dinosaurs back from the dead isn't really as sound as Hodak makes it seem though. Even humanity would have a tough time building a Jurassic Park in the next 15 years. First, we'd need some DNA from the prehistoric tyrants and unlike in the film Jurassic Park, where the DNA is retrieved from mosquitoes in amber and fused with frog DNA, that information has completely degraded.

However, more recently extinct animals, like the woolly mammoth, may be a good target for "de-extinction." We can still extract DNA from these creatures and could theoretically build and implant a mammoth embryo in a modern-day elephant. The question is: should we? Jurassic Park offers a pretty good reason not to, but mammoths aren't quite as bloodthirsty as Tyrannosaurus rex.

The NBA expects all arenas to be at full capacity next season, thanks to increased COVID-19 testing and more vaccines being administered. Another key aspect toward that effort is the NBA's new multiyear leaguewide partnership with Clear, a biometric screening company known for its expedited security process at hundreds of airports worldwide. ESPN reports: The partnership makes Clear's COVID-19 health screening technology available to all 30 teams in their NBA arenas, and it's expected to help facilitate more fans returning to games, though it's up to each team how to use the technology. Conversations for a leaguewide partnership began in early September. This is Clear's first leaguewide partnership with a professional sports league, but the company has been working with teams in MLS, MLB, NHL and the NFL. Clear first rolled out this program in a leaguewide format with the NHL's bubble season across two cities in Canada last year.

As it pertains to attendance, fans can download the Clear app and upload an identifying document along with a selfie. To link their COVID-19 test results, fans log into their testing account through the app, and results will be linked to their health pass. Before entering the venue, fans can open the app, verify their identity with another selfie and then answer health survey questions. (There are also expected to be an unspecified number of Clear kiosks where fans receive a temperature check and scan their QR code.) Fans are issued a red or green notification depending on their COVID-related health information. A Clear spokesperson noted that the arenas only receive information about whether a fan has passed the requirements for access and not any private health information from the individual. They said that the Clear program is scalable, and could facilitate thousands of fans entering arenas.

The joint international and Chinese mission organized by the World Health Organization on the origins of Covid released its report last week suggesting that for almost every topic it covered, more study was needed. What kind of study and who will do it is the question. From a report: The report suggested pursuing multiple lines of inquiry, focused on the likely origin of the coronavirus in bats. It concluded that the most likely route to humans was through an intermediate animal, perhaps at a wildlife farm. Among future efforts could be surveys of blood banks to look for cases that could have appeared before December 2019 and tracking down potential animal sources of the virus in wildlife farms, the team proposed. Critics of the report have sought more consideration of the possibility that a laboratory incident in Wuhan could have led to the first human infection. A loosely organized group of scientists and others who have been meeting virtually to discuss the possibility of a lab leak released an open letter this week, detailing several ways to conduct a thorough investigation. It called for further action, arguing that "critical records and biological samples that could provide essential insights into pandemic origins remain inaccessible."

Much of the letter echoes an earlier release from the same group detailing what it saw as the failures of the W.H.O. mission. This second letter is more specific in the kind of future investigations it proposes. The group is seeking a new inquiry that would include biosecurity and biosafety experts, one that could involve the W.H.O. or a separate multination effort to set up a different process to explore the beginnings of the pandemic and its origins in China. Jamie Metzl, an author, senior fellow of the Atlantic Council, an international policy think tank and signer of the scientists' letter, said the renewed calls for a more thorough investigation reflected the need for greater monitoring of and restrictions on what viruses can be studied in labs around the world. "This is not about ganging up on China," Mr. Metzl said. Mr. Metzl's group was among those disappointed by the report issued last week, as it dismissed out of hand the possibility of a leak from the Wuhan Institute of Virology, calling it extremely unlikely. Further reading: Data Withheld From WHO Team Probing COVID-19 Origins in China: Tedros.

sciencehabit writes: A potential chink in physicists' understanding of fundamental particles and forces now looks more real. New measurements confirm a fleeting subatomic particle called the muon may be ever so slightly more magnetic than theory predicts, a team of more than 200 physicists reported this week. That small anomaly -- just 2.5 parts in 1 billion -- is a welcome threat to particle physicists' prevailing theory, the standard model, which has long explained pretty much everything they've seen at atom smashers and left them pining for something new to puzzle over. "Since the 1970s we've been looking for a crack in the standard model," says Alexey Petrov, a theorist at Wayne State University. "This may be it." But Sally Dawson, a theorist at Brookhaven National Laboratory, notes the result is still not definitive. "It does nothing for our understanding of physics other than to say we have to wait a little longer to see if it is real."

For decades, physicists have measured the magnetism of the muon, a heavier, unstable cousin of the electron, which behaves like a tiny bar magnet. They put muons in a vertical magnetic field that makes them twirl horizontally like little compass needles. The frequency at which the muons twirl reveals how magnetic they are, which in principle can point to new particles, even ones too massive to be blasted into existence at an atom smasher like Europe's Large Hadron Collider. That's because, thanks to quantum uncertainty, the muon sits amid a haze of other particles and antiparticles flitting in and out of existence. These "virtual" particles can't be observed directly, but they can affect the muon's properties. Quantum mechanics and Albert Einstein's theory of special relativity predict the muon should have a certain basic magnetism. Familiar standard model particles flitting about the muon increase that magnetism by about 0.1%. And unknown particles lurking in the vacuum could add another, unpredictable increment of change. Further reading: Finding From Particle Research Could Rewrite Known Laws of Physics.

"NASA's Ingenuity Mars Helicopter has emerged from its first night on the surface of Mars," reports NASA's Jet Propulsion Laboratory. The Ingenuity Mars Helicopter was deployed from the belly of NASA's Perseverance rover on April 3rd. In the days to come, Ingenuity will be the first aircraft to attempt powered, controlled flight on another planet. From the report: Evening temperatures at Jezero Crater can plunge as low as minus 130 degrees Fahrenheit (minus 90 degrees Celsius), which can freeze and crack unprotected electrical components and damage the onboard batteries required for flight. "This is the first time that Ingenuity has been on its own on the surface of Mars," said MiMi Aung, Ingenuity project manager at NASA's Jet Propulsion Laboratory in Southern California. "But we now have confirmation that we have the right insulation, the right heaters, and enough energy in its battery to survive the cold night, which is a big win for the team. We're excited to continue to prepare Ingenuity for its first flight test."

To ensure the solar array atop the helicopter's rotors could begin getting sunlight as soon as possible, Perseverance was instructed to move away from Ingenuity shortly after deploying it. Until the helicopter put its four legs onto the Martian surface, Ingenuity remained attached to the belly of the rover, receiving power from Perseverance, which touched down at Jezero Crater on Feb. 18. The rover serves as a communications relay between Ingenuity and Earth, and it will use its suite of cameras to observe the flight characteristics of the solar-powered helicopter from "Van Zyl Overlook."

Researchers at the Queen Mary University of London have shown that you can collect "environmental DNA" (eDNA) from the air. Engadget reports: The team used a peristaltic pump combined with pressure filters to grab samples of naked mole rat DNA for five to 20 minutes, and then used standard kits to find and sequence genes in the resulting samples. This method not only pinpointed the mole rats' DNA (both in their housing and in the room at large), but caught some human DNA at the same time.

Lead author Dr. Elizabeth Claire said the work was originally meant to help conservationists and ecologists study biological environments. With enough development, though, it could be used for considerably more. Forensics units could pluck DNA from the air to determine if a suspect had been present at the scene of a crime. It might also be useful in medicine -- virologists and epidemiologists could understand how airborne viruses (like the one behind COVID-19) spread.

An excerpt from a wide-ranging interview of String theorist Michio Kaku in which he talks about Newton finding inspiration amid the great plague, how the multiverse can unite religions, and why a 'theory of everything' is within our grasp: The Guardian: You believe that within a century we will make contact with an alien civilisation. Are you worried about what they may entail?
Kaku: Soon we'll have the Webb telescope up in orbit and we'll have thousands of planets to look at, and that's why I think the chances are quite high that we may make contact with an alien civilisation. There are some colleagues of mine that believe we should reach out to them. I think that's a terrible idea. We all know what happened to Montezuma when he met Cortes in Mexico so many hundreds of years ago. Now, personally, I think that aliens out there would be friendly but we can't gamble on it. So I think we will make contact but we should do it very carefully.

The Guardian How close do you believe science is to accomplishing a theory of everything?
Kaku: Well, I think we actually have the theory but not in its final form. It hasn't been tested yet and Nobel prize winners have taken opposite points of view concerning something called string theory. I'm the co-founder of string field theory, which is one of the main branches of string theory, so I have some "skin in the game." I try to be fair and balanced. I think we're on the verge of a new era. New experiments are being done to detect deviations from the Standard Model. Plus, we have the mystery of dark matter. Any of these unexplored areas could give a clue as to the theory of everything.

The moon is just 27% the size of earth. So long-time Slashdot reader fahrbot-bot shares an interesting question from Science Alert.

"If you were to hop in a spaceship, don a spacesuit and go on an epic lunar hike, how long would it take to walk all the way around it? " During the Apollo missions, astronauts bounced around the surface at a casual 1.4 mph (2.2 km/h), according to NASA. This slow speed was mainly due to their clunky, pressurized spacesuits that were not designed with mobility in mind. If the "moonwalkers" had sported sleeker suits, they might have found it a lot easier to move and, as a result, picked up the pace...

At this new hypothetical max speed, it would take about 91 days to walk the 6,786-mile (10,921 km) circumference of the moon. For context, it would take around 334 days to walk nonstop (i.e., not stopping to sleep or eat) around the 24,901-mile (40,075 km) circumference of Earth at this speed, although it is impossible to do so because of the oceans.

Obviously, it's not possible to walk nonstop for 91 days, so the actual walk around the moon would take much longer.
Of course, it's not that easy, with ongoing solar radiation, extreme temperatures, and the need to walk around mile-deep craters. Aidan Cowley, a scientific adviser at the European Space Agency, also pointed out to Live Science that you'd need a support vehicle following you with food, water, and oxygen (which could also double as shelter, "kind of like portable mini-bases."). But he also identified another issue: This type of mission would also require a huge amount of endurance training because of the demands of exercising in low gravity on your muscles and cardiovascular system. "You'd have to send an astronaut with ultra-marathon-level fitness to do it," Cowley said. Even then, walking at a top speed would be possible only for around three to four hours a day, Cowley said. So, if a person walked at 3.1 mph (5 km/h) for 4 hours a day, then it would take an estimated 547 days, or nearly 1.5 years to walk the moon's circumference, assuming your route isn't too disrupted by craters and you can deal with the temperature changes and radiation.

However, humans won't have the technology or equipment to accomplish such a feat until at least the late 2030s or early 2040s, Cowley said. "You'd never get an agency to support anything like this," Cowley said. "But if some crazy billionaire wants to try it, maybe they can pull it off."

The New York Times tells the story of the Baikal-Gigaton Volume Detector, the largest neutrino telescope in the Northern Hemisphere and one of the world's biggest underwater space telescopes, now submerged in the world's deepest lake in Siberia.

The Times includes a quote from 80-year-old Russian physicist Grigori V. Domogatski, who has actually "led the quest" for this underwater telescope for 40 years. "If you take on a project, you must understand that you have to realize it in any conditions that come up," Dr. Domogatski said, banging on his desk for emphasis. "Otherwise, there's no point in even starting." [T]his hunt for neutrinos from the far reaches of the cosmos, spanning eras in geopolitics and in astrophysics, sheds light on how Russia has managed to preserve some of the scientific prowess that characterized the Soviet Union — as well as the limitations of that legacy... In the 1970s, despite the Cold War, the Americans and the Soviets were working together to plan a first deep water neutrino detector off the coast of Hawaii. But after the Soviet Union invaded Afghanistan, the Soviets were kicked out of the project. So, in 1980, the Institute for Nuclear Research in Moscow started its own neutrino-telescope effort, led by Dr. Domogatski. The place to try seemed obvious, although it was about 2,500 miles away: Baikal.

The project did not get far beyond planning and design before the Soviet Union collapsed, throwing many of the country's scientists into poverty and their efforts into disarray. But an institute outside Berlin, which soon became part of Germany's DESY particle research center, joined the Baikal effort.... By the mid 1990s, the Russian team had managed to identify "atmospheric" neutrinos — those produced by collisions in Earth's atmosphere — but not ones arriving from outer space. It would need a bigger detector for that. As Russia started to reinvest in science in the 2000s under President Vladimir V. Putin, Dr. Domogatski managed to secure more than $30 million in funding to build a new Baikal telescope...

Construction began in 2015, and a first phase encompassing 2,304 light-detecting orbs suspended in the depths is scheduled to be completed by the time the ice melts in April. (The orbs remain suspended in the water year-round, watching for neutrinos and sending data to the scientists' lakeshore base by underwater cable....) The Baikal telescope looks down, through the entire planet, out the other side, toward the center of our galaxy and beyond, essentially using Earth as a giant sieve. For the most part, larger particles hitting the opposite side of the planet eventually collide with atoms. But almost all neutrinos — 100 billion of which pass through your fingertip every second — continue, essentially, on a straight line. Yet when a neutrino, exceedingly rarely, hits an atomic nucleus in the water, it produces a cone of blue light called Cherenkov radiation. The effect was discovered by the Soviet physicist Pavel A. Cherenkov, one of Dr. Domogatski's former colleagues down the hall at his institute in Moscow. If you spend years monitoring a billion tons of deep water for unimaginably tiny flashes of Cherenkov light, many physicists believe, you will eventually find neutrinos that can be traced back to cosmic conflagrations that emitted them billions of light-years away.

The orientation of the blue cones even reveals the precise direction from which the neutrinos that caused them came.
Business Insider notes it's run by an international team of researchers from the Czech Republic, Germany, Poland, Russia, and Slovakia — and according to Russian news agency TASS cost nearly $34 million.

80-year-old Dr. Domogatski tells the Times, "You should never miss the chance to ask nature any question."

180 miles east of Seattle, "A pressure vessel from a SpaceX Falcon 9 rocket stage fell on a man's farm in Washington State last week," reports the Verge, "leaving a '4-inch dent in the soil,' the local sheriff's office said Friday."

Space.com reports: Although Falcon 9 rocket successfully delivered 60 Starlink satellites to orbit last month, the rocket's second stage didn't deorbit properly after completing the mission. The second stage is the smaller, upper part of the Falcon 9 rocket that separates from the main booster to take satellites to their intended orbit. While the main booster returns to Earth for a landing (so SpaceX can refurbish and reuse it on future launches), once the second stage has completed its role in the mission, it is either intentionally destroyed or left to linger in orbit.

Typically it conducts a "deorbit burn" that sends the craft on a safe trajectory to burn up in the atmosphere above the Pacific Ocean. But this time, something went wrong: According to Ars Technica, "there was not enough propellant after this launch to ignite the Merlin engine and complete the burn. So the propellant was vented into space, and the second stage was set to make a more uncontrolled re-entry into the atmosphere." So, instead of burning up over the ocean, the rocket stage ended up breaking up in the sky over the Pacific Northwest — the fiery display visible not only from Washington but also from surrounding states and parts of Canada — just after 9 p.m. local time on Thursday, March 25, or midnight EDT (0400 GMT) on Friday, March 26.
Jonathan McDowell, an astrophysicist at the Harvard-Smithsonian Center for Astrophysics, calls it "a bit of a puzzle" that the stage wasn't de-orbited under control back on March 4, telling the Verge that it "looks like something went wrong, but SpaceX has said nothing about it. However, reentries of this kind happen every couple of weeks. It's just unusual that it happens over a densely populated area, just because that's a small fraction of the Earth."

Physicist Isamu Akasaki, a co-winner of the 2014 Nobel Prize in physics for inventing the world's first efficient blue light-emitting diodes, has died, Meijo University said Friday. He was 92. The Japan Times reports: Akasaki, born in Kagoshima Prefecture, graduated from Kyoto University in 1952 before working at Matsushita Electric Industrial Co., now Panasonic Corp. He started working at Nagoya University as a professor in 1981 and was later given an honorary title. In 2014, he shared the Nobel Prize with physicist Hiroshi Amano, professor at the university, and Japan-born American Shuji Nakamura, professor at the University of California, Santa Barbara.

Akasaki, when he was a professor at Nagoya University, worked with Amano to produce gallium nitride crystals, and succeeded in 1989 in creating the world's first blue LED. Akasaki was honored in 1997 by the Japanese government with the Medal with Purple Ribbon, an honor bestowed on those who have made contributions to academic and artistic developments.

New submitter v1 writes: "Governor Ron DeSantis issued an executive order Friday forbidding local governments and businesses from requiring proof of a COVID-19 vaccine," reports WTXL-TV. In addition to local businesses and governments, this move is certain to rub the restarting cruise ship businesses the wrong way. Let the lawsuits begin! The executive order reads, in part: "No Florida government entity, or its subdivisions, agents, or assigns, shall be permitted to issue vaccine passports, vaccine passes, or other standardized documentation for the purpose of certifying an individual's COVID-19 vaccination status to a third party, or otherwise publish or share any individual's COVID-19 vaccination record or similar health information."

The full executive order can be found here (PDF)

Both monsters have grown in size over the years, and they reach new heights in Godzilla vs. Kong. But could they ever exist in real life? From a report: The last time the pair squared off, in the 1962 Japanese stop-motion release King Kong vs. Godzilla, Kong was 148 feet tall, compared to just 25ft tall in Peter Jackson's 2005 film King Kong, according to online estimates. In 2017's Kong: Skull Island, the great primate was around 104ft; almost four times smaller than the current iteration of Godzilla, who clocks in at 393ft. While the skeletons of Kong's parents in Skull Island suggest 100ft is roughly their species' genetic limit, the producers of the series have retconned the franchise by explaining that Kong is an adolescent in that film, leaving room for him to grow into a worthy opponent for Godzilla some 40 years down the movie timeline. Scaling up Kong to match Godzilla makes sense. It would be a short film if Godzilla stomped the big ape to death in the opening minutes. But how does that explain Godzilla's own growth spurt from 328ft in 2014 to 393ft today? And, crucially, is any of this based in science?

There are some things the films get right. James Rosindell from the faculty of natural sciences at Imperial College London points to a theory called 'Cope's Rule' which holds that evolution will increase a species body size over time. "[Being larger] gives competitive advantages and is often naturally selected for," he explains. However, larger creatures need more food and typically reproduce at a slower rate, meaning few individuals can be supported by any one ecosystem. So Kong and Godzilla being the last of their species -- and Kong slowly maturing over 40 years -- fits the science. But that's about the only thing that holds together. It turns out that Godzilla and Kong's biggest foe may not be each other, but physics. Specifically, the laws of gravity and biomechanics. The largest animal alive today, the blue whale, is found in our oceans. "The size limit of aquatic animals is closely tied to the ability to eat enough food to sustain their chonky bodies," explains David Labonte, a researcher in the department of bioengineering, also at Imperial College. Labonte has a specific interest in the interaction between physical laws and body size. For example, why there are no climbing animals heavier than geckos that can cling upside down to smooth surfaces? When it comes to the blue whale, Labonte explains that their large mouths and a technique known as 'lunge feeding' enables them to obtain enough food to sustain their bodies. This has allowed some blue whales to grow up to 180 tonnes (Kong was around 158 tonnes in his last film). An aquatic environment bestows other advantages, namely, buoyancy. Having its weight suspended in water is one of the key reasons why the blue whale is able to grow so large. It's also the reason that when whales beach, the most common cause of death is internal damage from the weight of their own bodies. Gravity, then, is a problem our terrestrial animals are yet to overcome. It's the reason our largest land animal, the African elephant tips the scales at a relatively puny six tonnes.

In major international tests, the physics-defying EmDrive has failed to produce the amount of thrust proponents were expecting. In fact, in one test at Germany's Dresden University, it didn't produce any thrust at all. Is this the end of the line for EmDrive? Popular Mechanics: The crux of the EmDrive is if you bounce microwaves around inside the tube, they exert more force in one direction than the other, creating a net thrust without the need for any propellant. And when NASA and a team at Xi'an in China tried this, they actually got a small-but-distinct net force. Now, however, physicists at the Dresden University of Technology (TU Dresden) are saying those promising results showing thrust were all false positives that are explained by outside forces. The scientists recently presented their findings in three papers at Space Propulsion Conference 2020 +1, with titles like "High-Accuracy Thrust Measurements of the EmDrive and Elimination of False-Positive Effects." (Other two studies here and here)

Using a new measuring scale and different suspension points of the same engine, the TU Dresden scientists "were able to reproduce apparent thrust forces similar to those measured by the NASA team, but also to make them disappear by means of a point suspension," researcher Martin Tajmar told the German site GreWi. The verdict: "When power flows into the EmDrive, the engine warms up. This also causes the fastening elements on the scale to warp, causing the scale to move to a new zero point. We were able to prevent that in an improved structure. Our measurements refute all EmDrive claims by at least 3 orders of magnitude."

Facing a brutal new wave of coronavirus cases, India on Thursday made anyone over 45 eligible for vaccination. But the scramble to vaccinate as many people as possible has also meant sharply curtailing exports. From a report: The hopes of vaccinating the world have largely fallen on the shoulders of India, a vaccine manufacturing powerhouse and home to the world's largest producer, the Serum Institute. Until recently, India was exporting most of the doses it was producing -- a mix of donations to neighbors and other friendly nations, sales to countries like Saudi Arabia and the U.K., and contributions to the global COVAX initiative. Indian-made vaccines have gone to 82 countries. Then, after a long lull, cases began to surge. They are now at their highest point since mid-October and are continuing to climb precipitously. Vaccine exports, which had been ramping up, suddenly fell sharply. Rather than supplying the world, the Serum Institute appears to have redirected nearly its entire supply to the homefront.