For the first time researchers have proven a clear correlation between deforestation and regional precipitation. Scientists hope it may encourage agricultural companies and governments in the Amazon and Congo basin regions and south-east Asia to invest more in protecting trees and other vegetation. From a report: The study found that the more rainforests are cleared in tropical countries, the less local farmers will be able to depend on rain for their crops and pastures. The paper, published in the journal Nature, adds to fears that the degradation of the Amazon is approaching a tipping point after which the rainforest will no longer be able to generate its own rainfall and the vegetation will dry up. People living in deforested areas have long provided anecdotal evidence that their microclimates became drier with lower tree cover. Scientists already knew that killing trees reduces evapotranspiration and thus theorised this would result in lower local rainfall.

The team at Leeds University have now proven this using satellite and meteorological records from 2003-17 across pantropical regions. Even at a small scale, they found an impact, but the decline became more pronounced when the affected area was greater than 50km squared (2,500 sq km). At the largest measured scale of 200km squared (40,000 sq km), the study discovered rainfall was 0.25 percentage points lower each month for every 1 percentage point loss of forest. This can enter into a vicious cycle, as reductions in rainfall lead to further forest loss, increased fire vulnerability and weaker carbon drawdown. One of the authors, Prof Dominick Spracklen of the University of Leeds, said 25% to 50% of the rain that fell in the Amazon came from precipitation recycling by the trees. Although the forest is sometimes described as the "lungs of the world," it functions far more like a heart that pumps water around the region.

Australia is preparing for its next step away from fossil fuels by creating a market to replace the spinning coal plant turbines that help stabilize the power grid. From a report: The government's adviser on energy policy, the Australian Energy Market Commission, is consulting on a rule change for a spot market in inertia provision, it said in a statement on Thursday. Australia's world-leading usage of wind, solar and batteries has led to "new and previously unobserved operational conditions," it said.

Conventional power plants use turbines that keep revolving even when the fuel that's forcing them to move stops burning. It's a process known as inertia, which helps network operators maintain stability, smooth over disturbances in the grid and prevent blackouts. However, solar panels and wind turbines generally stop and start almost instantaneously -- hence the AEMC's call for other sources of inertia.

After analyzing the data collected from NASA's successful Double Asteroid Redirection Test (DART) last year, the DART team found that the kinetic impactor mission "can be effective in altering the trajectory of an asteroid, a big step toward the goal of preventing future asteroid strikes on Earth." The findings were published in four papers in the journal Nature. From a NASA press release: The first paper reports DART's successful demonstration of kinetic impactor technology in detail: reconstructing the impact itself, reporting the timeline leading up to impact, specifying in detail the location and nature of the impact site, and recording the size and shape of Dimorphos. The authors, led by Terik Daly, Carolyn Ernst, and Olivier Barnouin of APL, note DART's successful autonomous targeting of a small asteroid, with limited prior observations, is a critical first step on the path to developing kinetic impactor technology as a viable operational capability for planetary defense. Their findings show intercepting an asteroid with a diameter of around half a mile, such as Dimorphos, can be achieved without an advance reconnaissance mission, though advance reconnaissance would give valuable information for planning and predicting the outcome. What is necessary is sufficient warning time -- several years at a minimum, but preferably decades. "Nevertheless," the authors state in the paper, DART's success "builds optimism about humanity's capacity to protect the Earth from an asteroid threat."

The second paper uses two independent approaches based on Earth-based lightcurve and radar observations. The investigation team, led by Cristina Thomas of Northern Arizona University, arrived at two consistent measurements of the period change from the kinetic impact: 33 minutes, plus or minus one minute. This large change indicates the recoil from material excavated from the asteroid and ejected into space by the impact (known as ejecta) contributed significant momentum change to the asteroid, beyond that of the DART spacecraft itself. The key to kinetic impact is that the push to the asteroid comes not only from colliding spacecraft, but also from this ejecta recoil. The authors conclude: "To serve as a proof-of-concept for the kinetic impactor technique of planetary defense, DART needed to demonstrate that an asteroid could be targeted during a high-speed encounter and that the target's orbit could be changed. DART has successfully done both."

In the third paper, the investigation team, led by Andrew Cheng of APL, calculated the momentum change transferred to the asteroid as a result of DART's kinetic impact by studying the change in the orbital period of Dimorphos. They found the impact caused an instantaneous slowing in Dimorphos' speed along its orbit of about 2.7 millimeters per second -- again indicating the recoil from ejecta played a major role in amplifying the momentum change directly imparted to the asteroid by the spacecraft. That momentum change was amplified by a factor of 2.2 to 4.9 (depending on the mass of Dimorphos), indicating the momentum change transferred because of ejecta production significantly exceeded the momentum change from the DART spacecraft alone. DART's scientific value goes beyond validating kinetic impactor as a means of planetary defense. By smashing into Dimorphos, the mission has broken new ground in the study of asteroids. DART's impact made Dimorphos an "active asteroid" -- a space rock that orbits like an asteroid but has a tail of material like a comet -- which is detailed in the fourth paper led by Jian-Yang Li of the Planetary Science Institute.

schwit1 shares a report from Ars Technica, written by Eric Berger: One of the world's most important rocket companies, United Launch Alliance, may be sold later this year. The potential sale has not been disclosed publicly, but three sources confirmed to Ars that potential buyers have been contacted about the opportunity. These sources said a deal is expected to be closed before the end of this year and that investment firm Morgan Stanley and consulting firm Bain & Company are managing the transaction.

The sale of United Launch Alliance, or ULA as it is known within the industry, would mark the end of an era that has lasted for nearly two decades. The company was officially formed in 2005 as part of a deal brokered by the US government, ensuring the military had access to both Atlas and Delta rockets to put national security satellites into space. To form ULA, Lockheed Martin and Boeing merged their launch businesses into a single company, each taking a 50 percent stake. This union was profitable for both parent companies, as ULA held a monopoly on launching national security missions and, effectively, NASA science probes. In return for 100 percent mission success, ULA received large launch contracts and an approximately $1 billion annual subsidy from the US Department of Defense to maintain "launch readiness."

The emergence of SpaceX in the early 2010s with the increasingly reliable Falcon 9 rocket started to disrupt this profitable arrangement. SpaceX sold the Falcon 9 rocket at a substantial discount to ULA's Atlas V and Delta IV rockets. The company also successfully sued the US government to allow the Falcon 9 rocket to compete for national security missions, and SpaceX launched its first one in 2017. In recent years, SpaceX has come to dominate United Launch Alliance in terms of cadence. By the end of 2022, the upstart was launching as many rockets each month as ULA launched during a calendar year. During the last four years, in fact, SpaceX has landed more rockets than ULA has launched during its existence. However, ULA still holds a prominent place in the global launch industry, and there will likely be no shortage of suitors.

Longtime Slashdot reader theshowmecanuck shares a report from CBS News: A 2012 trip to a Fayetteville, Arkansas, Walmart to pick up some milk turned out to be one for the history books. A giant bug that stopped a scientist in his tracks as he walked into the store and he ended up taking home turned out to be a rare Jurassic-era flying insect. Michael Skvarla, director of Penn State University's Insect Identification Lab, found the mysterious bug -- an experience that he says he remembers "vividly."

"I was walking into Walmart to get milk and I saw this huge insect on the side of the building," he said in a press release from Penn State. "I thought it looked interesting, so I put it in my hand and did the rest of my shopping with it between my fingers. I got home, mounted it, and promptly forgot about it for almost a decade."

[I]n the fall of 2020 when he was teaching an online course on insect biodiversity and evolution, Skvarla was showing students the bug and suddenly realized it wasn't what he originally thought. He and his students then figured out what it might be -- live on a Zoom call. "We were watching what Dr. Skvarla saw under his microscope and he's talking about the features and then just kinda stops," one of his students Codey Mathis said. "We all realized together that the insect was not what it was labeled and was in fact a super-rare giant lacewing." A clear indicator of this identification was the bug's wingspan. It was about 50 millimeters -- nearly 2 inches -- a span that the team said made it clear the insect was not an antlion. His team's molecular analysis on the bug has been published in the Proceedings of the Entomological Society of Washington.

theshowmecanuck captioned: "To be fair, he said he didn't know what it was so [he] just collected it and took it home, and then figured it out later. My thought that I added to the title was because of this quote in the story (which tickled my cynicism in humanity): "It could have been 100 years since it was even in this area -- and it's been years since it's been spotted anywhere near it..."

An anonymous reader quotes a report from The Guardian: The mysterious set of symptoms known as "Havana syndrome" was not caused by an energy weapon or foreign adversary, US intelligence has concluded. The assessment concludes a multi-year investigation into approximately 1,000 "anomalous health incidents" (AHIs) among US diplomats, spies and other employees in US embassies and missions around the world. Victims reported brain injuries, hearing loss, vertigo and strange auditory sensations, among other symptoms. Many suspected they had been victims of a targeted attack using some kind of directed energy weapon.

Of the seven intelligence agencies that undertook the investigation, five determined that "available intelligence consistently points against the involvement of US adversaries in causing the reported incidents," according to an unclassified version of the report released Wednesday by the House intelligence committee. Those five agencies deemed foreign adversary involvement "very unlikely." One considered it "unlikely" and one declined to state a conclusion.

The assessment involved a painstaking effort to analyze syndrome cases for patterns that could link them, as well as a search, using forensics and geolocation data, for evidence of a directed energy weapon, unnamed officials told the Post. "There was nothing," one official said. The officials told the Post they were open to new evidence that a foreign adversary had developed an energy weapon, but did not believe Russia or any other adversary was involved in these cases. The intelligence agencies "judge that there is no credible evidence that a foreign adversary has a weapon or collection device that is causing AHIs", according to the unclassified report. "In light of this and the evidence that points away from a foreign adversary, causal mechanism, or unique syndrome linked to AHIs, IC agencies assess that symptoms reported by US personnel were probably the result of factors that did not involve a foreign adversary, such as preexisting conditions, conventional illnesses, and environmental factors," the report reads.

Three agencies have "high confidence" in that assessment, three have "moderate confidence" and one has "low confidence."

An anonymous reader quotes a report from CBS News: Erythritol, a zero-calorie sugar substitute used to sweeten low-cal, low-carb and "keto" products, is linked to higher risk of heart attack, stroke and death, according to a new study. Researchers at the Cleveland Clinic studied over 4,000 people in the U.S. and Europe and found those with higher blood erythritol levels were at elevated risk of experiencing these major adverse cardiac events. The research, published Monday in the journal Nature Medicine, also found erythritol made blood platelets easier to form a clot.

"Our study shows that when participants consumed an artificially sweetened beverage with an amount of erythritol found in many processed foods, markedly elevated levels in the blood are observed for days -- levels well above those observed to enhance clotting risks," said Dr. Stanley Hazen, senior author of the study and chairman for the department of cardiovascular and metabolic sciences at Cleveland Clinic, in a press release.

While the study doesn't definitively show causation, CBS News medical contributor Dr. David Agus says there's "certainly enough data to make you very worried." "Most artificial sweeteners bind to your sweet receptors but aren't absorbed. Erythritol is absorbed and has significant effects, as we see in the study," Agus explains. Sweeteners like erythritol have "rapidly increased in popularity in recent years," Hazen noted, and the researchers say more in-depth study is needed to understand their long-term health effects. "Cardiovascular disease builds over time, and heart disease is the leading cause of death globally. We need to make sure the foods we eat aren't hidden contributors," he said. "In the study, researchers looked at the levels of erythritol in the blood of around 4,000 people from the United States and Europe and found that those with the highest blood concentration of the sugar substitute were more likely to have a stroke or heart attack," adds the New York Times in their reporting. "The participants, who mostly were over the age of 60, either already had or were at high risk for cardiovascular diseases because of conditions like diabetes and hypertension."

"The researchers also found that when they fed mice erythritol, that promoted blood clot formation. Erythritol appeared to induce clotting in human blood and plasma as well. Among eight people who consumed erythritol at levels typical in a pint of keto ice cream or a can of an artificially sweetened beverage, the sugar alcohol lingered in their blood for longer than two days."

Dr. Hazen said: "Every way we looked at it, it kept showing the same signal."

Starting today, Google is rolling out fall detection to all Pixel Watches. The Verge reports: Google's version of fall detection is similar to those you'll find on other smartwatches, like the Apple Watch and the Samsung Galaxy Watch 4 and 5 lineups. It uses the device's motion sensors and machine learning to figure out when someone's taken a tumble and might need some help. The feature will purportedly kick in about 30 seconds after it detects a hard fall. At that point, the watch will vibrate, sound an alarm, and flash a notification asking if the Pixel Watch owner needs help. If users don't respond after a minute, the watch will automatically call emergency services and share their location.

According to Google, the Pixel Watch ought to be able to differentiate between a hard fall, stumble, or physical activity that may mimic falling -- like the dreaded burpee. Whether that claim holds water is another matter that we'll have to test for ourselves. [...] The feature is opt in, so you'll have to turn it on manually if it's something you want. Google says Pixel Watch owners may see a promotional card pop up in the Updates page within the Watch Companion app. If you don't see it there, you can also check directly from the wrist in the Personal Safety app.

Scientists propose to develop a biological computer powered by millions of human brain cells that they say could outperform silicon-based machines while consuming far less energy. From a report: The international team, led by Johns Hopkins University in Baltimore, published in the journal Frontiers in Science on Tuesday a detailed road map to what they call "organoid intelligence." The hardware will include arrays of brain organoids -- tiny three-dimensional neural structures grown from human stem cells -- connected to sensors and output devices and trained by machine learning, big data and other techniques.

The aim is to develop an ultra-efficient system that can solve problems beyond the reach of conventional digital computers, while aiding development in neuroscience and other areas of medical research. The project's ambition mirrors work on the more advanced quantum computing but raises ethical questions around the "consciousness" of brain organoid assemblies. "I expect an intelligent dynamic system based on synthetic biology, but not constrained by the many functions the brain has to serve in an organism," said Professor Thomas Hartung of Johns Hopkins, who has gathered a community of 40 scientists to develop the technology. They have signed a "Baltimore declaration" calling for more research "to explore the potential of organoid cell cultures to advance our understanding of the brain and unleash new forms of biocomputing while recognising and addressing the associated ethical implications."

An anonymous reader shares a report: Shadows can do some adventurous, sometimes malignant, poetic things: They move, rebel, hide, refuse to be identified, vanish. All these visual aspects provide fertile ground for complex metaphors and narrations. Shadows are so visually telling that it takes little to move into emotionally tinged narratives. But it is the visual aspects that we primarily deal with here, with a special focus on several types of misrepresentations of shadows -- shadows doing impossible things -- that nevertheless reap a payoff for scene layout and do not look particularly shocking.

Painters have long struggled with the difficulties of depicting shadows, so much so that shadows -- after a brief, spectacular showcase in ancient Roman paintings and mosaics -- are almost absent from pictorial art up to the Renaissance and then are hardly present outside traditional Western art. Here, we embark on a journey that takes us through a number of extraordinary pictorial experiments -- some successful, some less so, but all interesting. We have singled out some broad categories of solutions to pictorial problems: depicted shadows having trouble negotiating obstacles in their path; shadow shapes and colors that stretch credibility; inconsistent illumination in the scene; and shadow character getting lost. We also find some taboos, that is, self-inflicted limitations on where or what to depict of a shadow. [...]

An anonymous reader shares a report: Heat pumps, in contrast, (to gas or oil furnaces) don't generate heat. They transfer it. That allows them to achieve more than 300 percent efficiency in some cases. Because they are more efficient, using heat pumps to cool and heat homes can help homeowners save money on their utility bills, said Sam Calisch, head of special projects at Rewiring America, a nonprofit advocacy group. In Maine, where heat pump adoption is growing, but where a majority of homes still burn oil, homeowners can save thousands of dollars in annual energy costs by making the switch, according to an analysis from Efficiency Maine, an independent administrator that runs the state's energy-saving programs.

Many heat pumps that are built for cold climates do have hefty upfront price tags. To soften the blow, a federal tax credit from last year's climate and tax law can cover 30 percent of the costs of purchase and installation, up to $2,000. As they've grown in popularity, heat pumps have increasingly been the subject of misconception and, at times, misinformation. Fossil-fuel industry groups have been the origin of many exaggerated and misleading claims, including the assertion that they don't work in regions with cold climates and are likely to fail in freezing weather.

While heat pumps do become less efficient in subzero temperatures, many models still operate close to normally in temperatures down to minus 13 degrees Fahrenheit, or minus 24 Celsius. Some of the latest models are even more efficient, and many "cold" countries, like Norway, Sweden and Finland, are increasingly embracing heat pumps. "We're starting to see evidence that the myth has been kept alive by people with an entrenched interest in avoiding the adoption of heat pumps," Dr. Calisch said. There are additional steps homeowners can take to make the most of their heat pumps, like sealing air leaks and drafts and improving insulation, said Troy Moon, the sustainability director for the city of Portland, Maine. Homeowners can also keep their existing furnaces as backup for the coldest days of the year, he said.

SpaceX is livestreaming coverage of its latest launch tonight. SpaceX and NASA were "preparing to launch a fresh crew to the International Space Station," reports CNN, "continuing the public-private effort to keep the orbiting laboratory fully staffed and return astronaut launches to U.S. soil

For this mission a reusable Falcon 9 rocket will eventually propel a Crew Dragon capsule into space — carrying six astronauts "from all over the world — two NASA astronauts, a Russian cosmonaut and an astronaut from the United Arab Emirates... to take over operations from the SpaceX Crew-5 astronauts who arrived at the space station in October 2022." They're expected to spend up to six months on board the orbiting laboratory, carrying out science experiments and maintaining the two-decade-old station.... During their stint in space, the Crew-6 astronauts will oversee more than 200 science-oriented projects, including researching how some substances burn in the microgravity environment and investigating microbial samples that will be collected from the exterior of the ISS.

They will play host to two other key missions that will stop by the ISS during their stay. The first is the Boeing Crew Flight Test, which will mark the first astronaut mission under a Boeing-NASA partnership. Slated for April, the flight will carry NASA astronauts Barry Wilmore and Sunita Williams to the space station, marking the last phase of a testing and demonstration program Boeing needs to carry out to certify its Starliner spacecraft for routine astronaut missions.

Then, in May, a group of four astronauts will arrive on a mission called AX-2 — a privately funded tourism mission to the space station. That mission, which will be carried out by a separate SpaceX Crew Dragon capsule, will include former NASA astronaut Peggy Whitson, now a private astronaut with the Texas-based space tourism company Axiom, which brokered and organized the mission. It will also include three paying customers, similar to the AX-1 mission that visited the ISS last year.
"It's another paradigm shift," mission commander Stephen Bowen said in January. "Those two events — huge events — in spaceflight happening during our increment, on top of all the other work we get to do, I don't think we're going to fully be able to absorb it until after the fact."

Roughly 25 hours after the launch the crew capsule willdock with the space station. This will be SpaceX's seventh astronaut-carrying flight for NASA since 2020.

Pennsylvania State University has an announcement. "Six massive galaxies discovered in the early universe are upending what scientists previously understood about the origins of galaxies in the universe." "These objects are way more massiveâ than anyone expected," said Joel Leja, assistant professor of astronomy and astrophysics at Penn State, who modeled light from these galaxies. "We expected only to find tiny, young, baby galaxies at this point in time, but we've discovered galaxies as mature as our own in what was previously understood to be the dawn of the universe."

Using the first dataset released from NASA's James Webb Space Telescope, the international team of scientists discovered objects as mature as the Milky Way when the universe was only 3% of its current age, about 500-700 million years after the Big Bang.... In a paper published February 22 in Nature, the researchers show evidence that the six galaxies are far more massive than anyone expected and call into question what scientists previously understood about galaxy formation at the very beginning of the universe. "The revelation that massive galaxy formation began extremely early in the history of the universe upends what many of us had thought was settled science," said Leja. "We've been informally calling these objects 'universe breakers' — and they have been living up to their name so far."

Leja explained that the galaxies the team discovered are so massive that they are in tension with 99% of models for cosmology. Accounting for such a high amount of mass would require either altering the models for cosmology or revising the scientific understanding of galaxy formation in the early universe — that galaxies started as small clouds of stars and dust that gradually grew larger over time. Either scenario requires a fundamental shift in our understanding of how the universe came to be, he added. "We looked into the very early universe for the first time and had no idea what we were going to find," Leja said. "It turns out we found something so unexpected it actually creates problems for science. It calls the whole picture of early galaxy formation into question."
"My first thought was we had made a mistake and we would just find it and move on with our lives," Leja says in the statement. "But we have yet to find that mistake, despite a lot of trying."

"While the data indicates they are likely galaxies, I think there is a real possibility that a few of these objects turn out to be obscured supermassive black holes. Regardless, the amount of mass we discovered means that the known mass in stars at this period of our universe is up to 100 times greater than we had previously thought. Even if we cut the sample in half, this is still an astounding change."

Phys.org got a more detailed explantion from one of the paper's co-authors: It took our home galaxy the entire life of the universe for all its stars to assemble. For this young galaxy to achieve the same growth in just 700 million years, it would have had to grow around 20 times faster than the Milky Way, said Labbe, a researcher at Australia's Swinburne University of Technology. For there to be such massive galaxies so soon after the Big Bang goes against the current cosmological model which represents science's best understanding of how the universe works. According to theory, galaxies grow slowly from very small beginnings at early times," Labbe said, adding that such galaxies were expected to be between 10 to 100 times smaller. But the size of these galaxies "really go off a cliff," he said....

The newly discovered galaxies could indicate that things sped up far faster in the early universe than previously thought, allowing stars to form "much more efficiently," said David Elbaz, an astrophysicist at the French Atomic Energy Commission not involved in the research. is could be linked to recent signs that the universe itself is expanding faster than we once believed, he added.

This subject sparks fierce debate among cosmologists, making this latest discovery "all the more exciting, because it is one more indication that the model is cracking," Elbaz said.

Three long-time Slashdot readers all submitted this story — schwit1, sinij, and DevNull127.

DevNull127 writes: Four U.S. agencies have concluded that the Covid-19 virus originated at the Wuhan market, the Wall Street Journal reports. The U.S. National Intelligence Council reached the same conclusion. Then there's two more agencies (including America's CIA) that are "undecided."

But there is one agency that decided — with "low confidence" — that the virus had somehow leaked from a lab. (And the FBI also decided with "moderate confidence" on that same theory.) "The new report highlights how different parts of the intelligence community have arrived at disparate judgments about the pandemic's origin," writes the Wall Street Journal — adding that unfortunately U.S. officials "declined" to give any details on what led to the Energy Department's position.
The Wall Street Journal also notes: Despite the agencies' differing analyses, the update reaffirmed an existing consensus between them that Covid-19 wasn't the result of a Chinese biological-weapons program, the people who have read the classified report said....

Some scientists argue that the virus probably emerged naturally and leapt from an animal to a human, the same pathway for outbreaks of previously unknown pathogens. Intelligence analysts who have supported that view give weight to "the precedent of past novel infectious disease outbreaks having zoonotic origins," the flourishing trade in a diverse set of animals that are susceptible to such infections, and their conclusion that Chinese officials didn't have foreknowledge of the virus, the 2021 report said.
Also responding to the Department of Energy's outlying position was a virologist at the Vaccine and Infectious Disease Organization at Canada's University of Saskatchewan, who posted a series of observations on Twitter: The available evidence shows overwhelmingly that the pandemic started at Huanan market via zoonosis. I have no idea what this evidence that Department of Energy has is. All I know that it is "weak" and resulted in a conclusion of "low confidence".

It reportedly comes from the DOE's own network of national labs rather than through spying. But I do know that to be consistent with the available scientific evidence, the DOE has to explain how the virus emerged twice over 2 wks in humans at the same market the size of a tennis court, over 8 km & across a river from the only lab in Wuhan working on SARSr-CoVs....

Claims of a progenitor at WIV are pure speculation & unsupported by evidence.... Despite 3 years of a global search for this evidence, it has not materialized, while evidence supporting zoonosis associated with Huanan has continued to stack up. At some point, an absence of evidence might just be evidence of absence.

America's Centers for Disease Control and Prevention "has issued a health advisory to warn the public of an increase of a drug-resistant bacteria called Shigella," reports CNN: There are limited antimicrobial treatments available for these particular drug-resistant strains of Shigella and it's also easily transmissible, warned the CDC in the Friday advisory. It's also able to spread antimicrobial resistance genes to other bacteria that infect the intestines.... The CDC says patients will recover from shigellosis without any antimicrobial treatment and it can be managed with oral hydration, but for those who are infected with the drug-resistant strains there are no recommendations for treatment if symptoms become more severe. The percentage of infections from drug-resistant strains of the bacteria increased from zero in 2015 to 5% in 2022, according to the CDC.

Nationwide, there are nearly 3 million antimicrobial-resistant infections each year, and more than 35,000 people die as a result, according to the CDC. A recent report by the United Nations said roughly 5 million deaths worldwide were associated with antimicrobial resistance in 2019 and the annual toll is expected to increase to 10 million by 2050 if steps are not taken to stop the spread of antimicrobial resistance.

In a keynote at FOSDEM 2023, NASA's science data officer Steve Crawford explored NASA's use of open-source software.

But LWN.net notes that the talk went far beyond just the calibration software for the James Webb Space Telescope and the Mars Ingenuity copter's flight-control framework. In his talk, Crawford presented NASA's Open-Source Science Initiative. Its goal is to support scientists to help them integrate open-science principles into the entire research workflow. Just a few weeks before Crawford's talk, NASA's Science Mission Directorate published its new policy on scientific information.

Crawford summarized this policy with "as open as possible, as restricted as necessary, always secure", and he made this more concrete: "Publications should be made openly available with no embargo period, including research data and software. Data should be released with a Creative Commons Zero license, and software with a commonly used permissive license, such as Apache, BSD, or MIT. The new policy also encourages using and contributing to open-source software." Crawford added that NASA's policies will be updated to make it clear that employees can contribute to open-source projects in their official capacity....

As part of its Open-Source Science Initiative, NASA has started its five-year Transform to Open Science (TOPS) mission. This is a $40-million mission to speed up adoption of open-science practices; it starts with the White House and all major US federal agencies, including NASA, declaring 2023 as the "Year of Open Science". One of NASA's strategic goals with TOPS is to enable five major scientific discoveries through open-science principles, Crawford said.
Interesting tidbit from the article: "In 2003 NASA created a license to enable the release of software by civil servants, the NASA Open Source Agreement. This license has been approved by the Open Source Initiative (OSI), but the Free Software Foundation doesn't consider it a free-software license because it does not allow changes to the code that come from third-party free-software projects."

Thanks to Slashdot reader guest reader for sharing the article!

Researchers at Linkoping, Lund and Gothenburg universities in Sweden have successfully grown electrodes in living tissue using the body's molecules as triggers. The result, published in the journal Science, paves the way for the formation of fully integrated electronic circuits in living organisms. Phys.Org reports: Linking electronics to biological tissue is important to understanding complex biological functions, combating diseases in the brain, and developing future interfaces between man and machine. However, conventional bioelectronics, developed in parallel with the semiconductor industry, have a fixed and static design that is difficult, if not impossible, to combine with living biological signal systems. To bridge this gap between biology and technology, researchers have developed a method for creating soft, substrate-free, electronically conductive materials in living tissue. By injecting a gel containing enzymes as the "assembly molecules," the researchers were able to grow electrodes in the tissue of zebrafish and medicinal leeches.

"Contact with the body's substances changes the structure of the gel and makes it electrically conductive, which it isn't before injection. Depending on the tissue, we can also adjust the composition of the gel to get the electrical process going," says Xenofon Strakosas, researcher at LOE and Lund University and one of the study's main authors. The body's endogenous molecules are enough to trigger the formation of electrodes. There is no need for genetic modification or external signals, such as light or electrical energy, which has been necessary in previous experiments. The Swedish researchers are the first in the world to succeed in this.

In their study, the researchers further show that the method can target the electronically conducting material to specific biological substructures and thereby create suitable interfaces for nerve stimulation. In the long term, the fabrication of fully integrated electronic circuits in living organisms may be possible. In experiments conducted at Lund University, the team successfully achieved electrode formation in the brain, heart, and tail fins of zebrafish and around the nervous tissue of medicinal leeches. The animals were not harmed by the injected gel and were otherwise not affected by the electrode formation. One of the many challenges in these trials was to take the animals' immune system into account.

An anonymous reader quotes a report from Ars Technica: Cheap, light, flexible, yet robust circuit boards are critical for wearable electronics, among other applications. In the future, those electronics might be printed on flexible circuits made out of bacterial cultures used to make the popular fermented black tea drink called kombucha, according to a recent paper posted to the arXiv preprint server. "Nowadays kombucha is emerging as a promising candidate to produce sustainable textiles to be used as eco-friendly bio wearables," co-author Andrew Adamatzky, of the University of the West of England in Bristol, old New Scientist. "We will see that dried -- and hopefully living -- kombucha mats will be incorporated in smart wearables that extend the functionality of clothes and gadgets. We propose to develop smart eco-wearables which are a convergence of dead and alive biological matter."

Adamatzky previously co-authored a 2021 paper demonstrating that living kombucha mats showed dynamic electrical activity and stimulating responses, as well as a paper last year describing the development of a bacterial reactive glove to serve as a living electronic sensing device. Inspired by the potential of kombucha mats for wearable electronics, he and his latest co-authors have now demonstrated that it's possible to print electronic circuits onto dried SCOBY mats. The team used commercially sourced kombucha bacteria to grow their mats, then air-dried the cultures on plastic or paper at room temperature. The mats don't tear easily and are not easily destroyed, even when immersed in water for several days. One of the test mats even survived oven temperatures up to 200 C (392 F), although the mats will burn when exposed to an open flame. Adamatzky et al. were able to print conductive polymer circuits onto the dried kombucha mats with an aerosol jet printer and also successfully tested an alternative method of 3D printing a circuit out of a conductive polyester/copper mix. They could even attach small LEDs to the circuits with an epoxy adhesive spiked with silver, which were still functioning after repeatedly being bent and stretched.

According to Adamatzky et al., unlike the living kombucha mats he worked with previously, the dried SCOBY mats are non-conductive, confining the electrical current to the printed circuit. The mats are also lighter, cheaper, and more flexible than the ceramic or plastic alternatives. Potential applications include wearable heart rate monitors, for instance, and other kombucha-based devices. "Future research will be concerned with printing advanced functional circuits, capable for detecting -- and maybe recognizing -- mechanical, optical, and chemical stimuli," the authors concluded.

Cars aren't the only conveyances being transformed by electricity. Along with electric motorcycles and snowmobiles, personal watercraft are floating better ways to coexist with nature and neighbors. This new breed of machines brings requisite thrills to the Great Outdoors, but without fouling the atmosphere or disturbing the peace with an internal-combustion racket. From a report: The latest comes from Florida-based Pelagion, whose founder and chief executive, engineer Jamie Schlinkmann, was inspired by childhood adventures on a watersports icon: A 1973 Kawasaki Jet Ski. Schlinkmann's machine, just the 213th ever built, is still one of his prized possessions. His company's Pelagion HydroBlade is an ingenious mash-up of classic stand-up Jet Skis and modern surfboard-style "eFoils." Those electric-powered boards had a real breakthrough in 2020 when Facebook founder Mark Zuckerberg was spotted sailing over Hawaiian waters on one model. The metaverse may spring to mind the first time you see an eFoil, with its rider seeming to fly above the waves on a magic carpet. Naturally, there's no magic, only hydrodynamics. Hydrofoils work like an airplane wing, only underwater: An aerodynamic wing creates high and low pressure areas as it slices through water, generating lift with precious little drag. Add an electric motor and propeller to create thrust and you've got a hydrofoil that doesn't require surf waves, a kite, or tow boat to generate power.

There's only one problem: Powered or not, a hydrofoil takes some practice and patience to learn to ride in a standing position, especially for people with no surfing or wakeboarding experience, or so-so balance skills. To solve that, Schlinkmann's invention adds a boom-mounted canard and rudder ahead of the rider to keep the craft airborne and steady without a rider having to constantly expend energy and adjust body position. Add a trusty set of handlebars, says Schlinkmann, and the HydroBlade handles more like a vehicle with which most of us are familiar: a bicycle. Making the experience somewhat like riding a bike, he says, helps ease the intimidation factor and boost appeal for people of all ages and abilities. [...] The design began to take shape around 2020. Schlinkmann pulled the engine and other ICE guts from his old Jet Ski and studied how he could make it electric. He realized a conventional electric Jet Ski might only have a 15- or 20-minute runtime on a single charge, which wasn't good enough. But after riding a few eFoils, the idea came together. For the HydroBlade, a pair of permanent-magnet radial-flux motors drive dual propellers at a peak 16 kilowatts (21 horsepower). They're fed by two battery packs, with a combined 600 cylindrical 2170 NCM cells and a total 11 kilowatt-hours of energy -- about eight to 10 times the capacity onboard a typical eFoil. A separate 1.6-kW charger can refill batteries in about 4 hours.

It is no mystery that a good night's sleep and a lie-in can improve your day. But researchers are suggesting that, far from just being enjoyable, quality sleep may even add years to people's lives. From a report: Men who regularly sleep well could live almost five years longer than those who do not, while women could benefit by two years, research suggests. And they could also enjoy better health during their lives. Researchers found that young people who had better sleep habits were less likely to die early. But the researchers said their findings indicated quantity of sleep was not in itself enough to achieve the possible health benefits -- quality of sleep is also important. Good sleep was based on five different factors: ideal sleep duration of seven to eight hours a night; difficulty falling asleep no more than two times a week; trouble staying asleep no more than two times a week; not using any sleep medication; and feeling well rested after waking up at least five days a week. The findings suggested that about 8% of deaths from any cause could be attributed to poor sleep patterns. The researchers included data from 172,321 people with an average age of 50, 54% of whom were women, who participated in the National Health Interview Survey between 2013 and 2018. The survey looked at the health of the US population and included questions about sleep and sleep habits.