David Glowacki, an artist and computational molecular physicist, has created a VR experience called Isness-D that aims to recapture a transcendence experience he had when he fell in the mountains fifteen years ago. "[O]n four key indicators used in studies of psychedelics, the program showed the same effect as a medium dose of LSD or psilocybin (the main psychoactive component of 'magic' mushrooms)," reports MIT Technology Review. From the report: Isness-D is designed for groups of four to five people based anywhere in the world. Each participant is represented as a diffuse cloud of smoke with a ball of light right about where a person's heart would be. Participants can partake in an experience called energetic coalescence: they gather in the same spot in the virtual-reality landscape to overlap their diffuse bodies, making it impossible to tell where each person begins and ends. The resulting sense of deep connectedness and ego attenuation mirrors feelings commonly brought about by a psychedelic experience.

[...] To create it, Glowacki took aesthetic inspiration from quantum mechanics -- as he puts it, "where the definition of what's matter and what's energy starts to become blurred." For their paper, Glowacki and his collaborators measured the emotional response Isness-D elicited in 75 participants. They based their measurements on four metrics used in psychedelics research -- the MEQ30 (a mystical experience questionnaire), the ego dissolution inventory scale, the "communitas" scale, and the "inclusion of community in self" scale. Communitas is defined as an experience of intense shared humanity that transcends social structure. Participants' responses were then compared with those given in published, double-blind psychedelics studies. For all four metrics, Isness-D elicited responses indistinguishable from those associated with medium doses of psychedelics. On the mystical experience scale, Isness-D participants reported an experience as intense as that elicited by 20 milligrams of psilocybin or 200 micrograms of LSD, and stronger than that induced by microdoses of either substance. The findings have been published in the journal Nature Scientific Reports.

Polio is back, monkeypox isn't slowing down, COVID-19 is still around -- and now there's more not-so-good news on the infection front: over 200 human diseases could get worse because of climate change, according to a new study. From a report: Researchers have known for a long time that the changing climate affects disease. Warmer temperatures can make regions newly hospitable to disease-carrying mosquitoes, while floods from more frequent storms can carry bacteria in their surges of water. Most research, though, only focused on a handful of threats or one disease at a time. The new study, published in Nature Climate Change, built a comprehensive map of all of the ways various climate hazards could interact with 375 documented human infectious diseases. The authors reviewed over 77,000 scientific articles about those diseases and climate hazards. They found that, of those 375 diseases, 218 could be aggravated by things like heatwaves, rising sea levels, and wildfires.

The study found four main ways climate change exacerbates diseases. First, problems happen when changes cause disease-carrying animals to move closer to people. For example, animal habitats are disrupted by things like wildfires that drive bats and rodents into new areas, increasing the likelihood they'll transmit diseases like Ebola to people. Other research shows that climate change makes viruses more likely to jump from animals to people, as happened with the coronavirus that causes COVID-19. That phenomenon also likely contributed to the 2016 Zika outbreaks.

"No one imagined commercial space tourism taking hold, no one believed crowd-funded satellites and mega constellations at low earth orbit were possible, and no one could have conceived of the sheer popularity of space entrepreneurship," reads a statement Friday from the chair of America's Federal Communications Commission. "But it's all happening...."

And Reuters reports on what happens next: With Earth's orbit growing more crowded with satellites, a U.S. government agency on Friday said it would begin revising decades-old rules on getting rid of space junk and on other issues such as satellite refueling and inspecting and repairing in-orbit spacecraft. "We believe the new space age needs new rules," Federal Communications Commission (FCC) Chairwoman Jessica Rosenworcel said after the 4-0 FCC vote, adding that current rules "were largely built for another era."

Rosenworcel said the FCC needs "to make sure our rules are prepared for the proliferation of satellites in orbit and new activities in our higher altitudes."

The FCC also plans to look at "new ways to clean up orbital debris. After all, there are thousands of metric tons of junk in space," Rosenworcel added. The FCC will look at "the potential for orbital debris remediation and removal functions that offer the prospect of improvement in the orbital debris environment....."

"The FCC remains the only agency to license virtually every commercial space mission that touches the United States," FCC Commissioner Geoffrey Starks said. "With that power comes the responsibility to understand the missions we authorize, and to create an enabling regulatory environment that opens new doors while still protecting against new risks."
A statement from the FCC describes their new policy review as a "modernization effort."

And it made a point of acknowledging that in-space servicing, assembly, and manufacturing has "the potential to build entire industries, create new jobs, mitigate climate change, and advance America's economic, scientific, technological, and national security interests."

"If you've been following Joe Barnard's rocketry projects for the past few years, you'll know that one of his primary goals has been to propulsively land a model rocket like SpaceX," reports Hackaday.

"Now, 7 years into the rollercoaster journey, he has finally achieved that goal with the latest version of his Scout rocket." Many things need to come together to launch AND land a rocket on standard hobby-grade solid fuel rocket motors. A core component is stabilization of the rocket during the entire flight, which achieved using a thrust-vectoring control (TVC) mount for the rocket motors and a custom flight computer loaded with carefully tuned guidance software. Until recently, the TVC mounts were 3D printed, but Joe upgraded it to machined aluminum to eliminate as much flex and play as possible.

Since solid-fuel rockets can't technically be throttled, [Joe] originally tried to time the ignition time of the descent motor in such a manner that it would burn out as the rocket touches down. The ignition time and exact thrust numbers simply weren't repeatable enough, so in his 2020 landing attempts, he achieved some throttling effect by oscillating the TVC side to side, reducing the vertical thrust component. This eventually gave way to the final solution, a pair of ceramic pincers which block the thrust of the motors as required.
"I have been trying to do what you just saw for seven years," Barnard says in the video, remembering that he started the project back in the fall of 2015. "Not because it's revolutionary or game-changing for model rocketry, but because it's a really cool project, and I knew I would learn a lot." (On Twitter, Barnard added that "I had no background in aero, electrical engineering, coding, etc so it took a lot of trial and error.")

And in the video Barnard made sure to thank his 690 supporters on Patreon — and also shared a surprise. He'd printed out a sheet of paper with the name of every one of his Patreon supporters, rolled it up, and inserted it into the hollow center of his rocket before the flight. "So if you support, you were part of this."

The Patreon account offers more details on Barnard's mission. "Learning by experimentation is the most effective way to gain a deep understanding of new concepts, which is why providing hands-on experience with advanced rocketry components is important for the next generation of scientists, engineers, and astronauts."

And the video ends with Bernard describing the next projects he'll attempt:

• More SpaceX-like vertical landings

• A 9-foot model of SpaceX's Starship Super Heavy rocket

• A special secret project known only as "the meat rocket"

• An actual model-rocket space shot — that is, a rocket that ascends over 100 kilometers

When a U.S. satellite passed over Russia's Plesetsk Cosmodrome, a Russian satellite was launched close behind it "with capabilities unknown," reports the Drive, adding that it's now "getting suspiciously close..." Russia has launched satellite 14F150 Nivelir into orbit under a mission dubbed Kosmos-2558, and its current orbital path could soon place it in close proximity to what is reported to be the spy satellite designated USA-326. Unconfirmed rumors that the asset will serve as an 'inspector' satellite to covertly spy on nearby spacecraft have begun to circulate online following the launch and would line up with Russia's known on-orbit anti-satellite weapons capabilities and developments.

Its exact purpose is unknown at present, but it has been described as an "inspector" satellite, a term that is often associated with so-called "killer satellites...." Jonathan McDowell, an astronomer at the Center for Astrophysics, or @planet4589 on Twitter, has noted that Kosmos-2558's current orbital path will soon place it within 80 km of what is believed to be the USA 326 satellite. For reference, the Center for Astrophysics is a collaborative effort run jointly by the Smithsonian Astrophysical Observatory and Harvard College Observatory....

USA-326 was launched in February of this year by a SpaceX Falcon 9 rocket out of Vandenberg Space Force Base, its mission designated NROL-87, which is a classified national security operation led by the National Reconnaissance Office (NRO) in partnership with SpaceX. A press release shared by the NRO following the initial launch claimed that NROL-87 was designed, built, and now operated by the NRO to support its "overhead reconnaissance mission," which is largely centered around protecting national security through the exploitation of space-based intelligence, surveillance, and reconnaissance.
Thanks to long-time Slashdot reader schwit1 for sharing the story.

An anonymous reader quotes a report from Motherboard: A photo tweeted by a famous French physicist supposedly of Proxima Centauri by the James Webb Space Telescope was actually a slice of chorizo. Etienne Klein, research director at France's Alternative Energies and Atomic Energy Commission posted the photo last week, claiming it showed the closest star to the sun. "This level of detail," Klein wrote. "A new world is revealed day after day."

But a few days later, Klein revealed that the photo he tweeted was not the work of the world's most powerful space telescope, as he had in fact tweeted a slice of chorizo sausage. "According to contemporary cosmology, no object belonging to Spanish charcuterie exists anywhere but on Earth," he said after apologizing for tricking so many people. "Like an idiot, I got screwed," tweeted one French user. "Same," replied another, "the source was so credible" Klein told French news outlet Le Point that his intention had been to educate people about fake news online, adding that "I also think that if I hadn't said it was a James Webb photo, it wouldn't have been so successful."

With the help of SpaceX and a Falcon 9 rocket, South Korea launched its first mission to the moon. "The successful launch of Danuri, officially known as the Korea Pathfinder Lunar Orbiter, takes the country beyond Earth's orbit for the first time," reports Nature. From the report: Danuri should arrive at its destination around mid-December. Its trajectory means it will take longer than most past missions to the Moon, which typically arrived in days, but will require minimal fuel. About an hour after lift-off, the spacecraft detached from the Falcon 9 rocket on which it launched. The Korea Aerospace Research Institute's control centre in Daejeon then took command and made contact with the spacecraft.

The bulk of the mission's scientific observations will take place once Danuri reaches the Moon, which it will orbit for a year at 100 kilometres above the lunar surface. KGRS has a broader energy range than previous y-ray detectors sent to the Moon, and scientists hope that it will create the clearest maps yet of the distribution of elements including iron, titanium, uranium and thorium. [...] [T]he spectrometer is also sensitive enough to detect hydrogen, which can be used to infer the presence of water on the surface, and create a water-resource map of the entire Moon. Previous probes have struggled to map the presence of water beyond the poles, where it is relatively more abundant [...].

KMAG will take precise measurements of the magnetic field on the surface. It will also study electric currents induced by the magnetic field of the solar wind, which streams out into space from the Sun, says Garrick-Bethell, who is part of the instrument's science team. Studying how these currents pass through the Moon could reveal what the Moon is made of deep inside. To do this, Danuri will make use of simultaneous measurements by two NASA probes currently circling the Moon, says Garrick-Bethell. This "will make a beautiful experiment that was only briefly attempted in the Apollo era, but not over the entire Moon," he says. You can watch a recording of the launch here.

To the naked eye, the Mako Compressor Station outside the dusty West Texas crossroads of Lenorah appears unremarkable, similar to tens of thousands of oil and gas operations scattered throughout the oil-rich Permian Basin. What's not visible through the chain-link fence is the plume of invisible gas, primarily methane, billowing from the gleaming white storage tanks up into the cloudless blue sky. From a report: The Mako station, owned by a subsidiary of West Texas Gas, was observed releasing an estimated 870 kilograms of methane -- an extraordinarily potent greenhouse gas -- into the atmosphere each hour. That's the equivalent impact on the climate of burning seven tanker trucks full of gasoline every day.

But Mako's outsized emissions aren't illegal, or even regulated. And it was only one of 533 methane "super emitters" detected during a 2021 aerial survey of the Permian conducted by Carbon Mapper, a partnership of university researchers and NASA's Jet Propulsion Laboratory. The group documented massive amounts of methane venting into the atmosphere from oil and gas operations across the Permian, a 250-mile-wide bone-dry expanse along the Texas-New Mexico border that a billion years ago was the bottom of a shallow sea. Hundreds of those sites were seen spewing the gas over and over again. Ongoing leaks, gushers, going unfixed.

The FCC may have just advanced the industrialization of space. Commissioners have voted in favor of an inquiry that will explore in-space servicing, assembly and manufacturing (ISAM). The move would both help officials understand the demands and risks of current in-space production technology while facilitating new projects. This could help companies build satellites and stations in orbit, for instance, while finding new ways to deal with growing volumes of space debris. From a report: The vote helps open a new "Space Innovation" docket at the FCC. It also comes two days after the regulator updated its rules to create more breathing room for satellite broadband frequencies. Expect considerably more space-related developments going forward, then. Chairwoman Jessica Rosenworcel saw the inquiry as vital. Existing rules were made for "another era" where space programs were exclusively government-run, she said. The support ISAM will ideally help the FCC adapt to space tourism, huge private satellite constellations and a larger general shift toward commercial spaceflight.

Doctors have identified a protein in the blood they believe could serve as an early warning sign for patients who are at risk of diabetes and death from cancer. From a report: Researchers in Sweden and China analysed two decades of health records from more than 4,500 middle-aged adults on the Malmo diet and cancer study. They found that those with the highest levels of prostasin, a protein that circulates in the blood, were almost twice as likely to have diabetes than those with the lowest levels. Some of those enrolled on the study already had diabetes, so the scientists looked at who among those without the disease went on to be diagnosed later. People in the top quarter for prostasin levels turned out to be 76% more likely to develop diabetes than those in the bottom quarter.

Dr Xue Bao, the first author on the study at the Affiliated hospital of Nanjing University medical school in China, said prostasin was a potential new "risk marker" for diabetes, but also death from cancer, particularly in people who have high blood sugar. Prostasin plays several roles in the body, such as regulating blood pressure and blood volume, and it also suppresses the growth of tumours that are fuelled by high blood sugar. While type 2 diabetes is known to raise the risk of certain cancers, including pancreatic, liver, bowel and endometrial tumours, the biological mechanisms are far from clear.

The Biden administration declared monkeypox a public health emergency on Thursday as cases topped 6,600 nationwide. From a report: The declaration could facilitate access to emergency funds, allow health agencies to collect more data about cases and vaccinations, accelerate vaccine distribution and make it easier for doctors to prescribe treatment. "We're prepared to take our response to the next level in addressing this virus and we urge every American to take monkeypox seriously and to take responsibility to help us tackle this virus," Department of Health and Human Services Secretary Xavier Becerra said in a Thursday briefing about the emergency declaration. A quarter of U.S. cases are in New York state, which declared a state of emergency last week. California and Illinois followed suit with emergency declarations Monday.

Steve Nadis, reporting for Quanta Magazine: In 1963, the mathematician Roy Kerr found a solution to Einstein's equations that precisely described the space-time outside what we now call a rotating black hole. (The term wouldn't be coined for a few more years.) In the nearly six decades since his achievement, researchers have tried to show that these so-called Kerr black holes are stable. What that means, explained Jeremie Szeftel, a mathematician at Sorbonne University, "is that if I start with something that looks like a Kerr black hole and give it a little bump" -- by throwing some gravitational waves at it, for instance -- "what you expect, far into the future, is that everything will settle down, and it will once again look exactly like a Kerr solution." The opposite situation -- a mathematical instability -- "would have posed a deep conundrum to theoretical physicists and would have suggested the need to modify, at some fundamental level, Einstein's theory of gravitation," said Thibault Damour, a physicist at the Institute of Advanced Scientific Studies in France.

In a 912-page paper posted online on May 30, Szeftel, Elena Giorgi of Columbia University and Sergiu Klainerman of Princeton University have proved that slowly rotating Kerr black holes are indeed stable. The work is the product of a multiyear effort. The entire proof -- consisting of the new work, an 800-page paper by Klainerman and Szeftel from 2021, plus three background papers that established various mathematical tools -- totals roughly 2,100 pages in all. The new result "does indeed constitute a milestone in the mathematical development of general relativity," said Demetrios Christodoulou, a mathematician at the Swiss Federal Institute of Technology Zurich. Shing-Tung Yau, an emeritus professor at Harvard University who recently moved to Tsinghua University, was similarly laudatory, calling the proof "the first major breakthrough" in this area of general relativity since the early 1990s. "It is a very tough problem," he said. He did stress, however, that the new paper has not yet undergone peer review. But he called the 2021 paper, which has been approved for publication, both "complete and exciting."

The pigs had been lying dead in the lab for an hour -- no blood was circulating in their bodies, their hearts were still, their brain waves flat. Then a group of Yale scientists pumped a custom-made solution into the dead pigs' bodies with a device similar to a heart-lung machine. From a report: What happened next adds questions to what science considers the wall between life and death. Although the pigs were not considered conscious in any way, their seemingly dead cells revived. Their hearts began to beat as the solution, which the scientists called OrganEx, circulated in veins and arteries. Cells in their organs, including the heart, liver, kidneys and brain, were functioning again, and the animals never got stiff like a typical dead pig. Other pigs, dead for an hour, were treated with ECMO, a machine that pumped blood through their bodies. They became stiff, their organs swelled and became damaged, their blood vessels collapsed, and they had purple spots on their backs where blood pooled. The group reported its results Wednesday in Nature. The researchers say their goals are to one day increase the supply of human organs for transplant by allowing doctors to obtain viable organs long after death. And, they say, they hope their technology might also be used to prevent severe damage to hearts after a devastating heart attack or brains after a major stroke.

Children who grow up in low-income households but who make friends that come from higher-income homes are more likely to have higher salaries in adulthood than those who have fewer such friends. From a report: "There's been a lot of speculation... that the individual's access to social capital, their social networks and the community they live in might matter a lot for a child's chance to rise out of poverty," says Raj Chetty at Harvard University. To find out if that holds up, he and his colleagues analysed anonymised Facebook data belonging to 72.2 million people in the US between the ages of 25 and 44, accounting for 84 per cent of the age group's US population. It is relatively nationally representative of that age group, he says.

The team used a machine-learning algorithm to determine each person's socio-economic status (SES), combining data such as the median income of people who live in the same region, the person's age and sex and the value of their phone model as a proxy for individual income. The median household income was found to be close to $58,000. The researchers then split the individuals into two groups: those who were below the median SES and those who were above. If people made friends randomly, you would expect half of each person's friends to be in each income group. But instead, for people below the median SES, only 38 per cent of their friends were above the median SES. Meanwhile, 70.6 per cent of the friends of people above the median SES were also a part of the same group.

Scientists have discovered dark matter around galaxies that existed about 12 billion years ago, the earliest detection yet of this mysterious substance that dominates the universe. Space.com reports: The findings, achieved by a collaboration led by researchers from Japan's Nagoya University, suggest that dark matter in the early universe is less 'clumpy' than predicted by many current cosmological models. If further work confirms this theory, it could change scientists' understanding of how galaxies evolve and suggest that the fundamental rules governing the cosmos could have been different when the 13.7 billion-year-old universe was just 1.7 billion years old. The key to mapping dark matter in the very early universe the cosmic microwave background (CMB), a sort of fossil radiation left over from the Big Bang that is distributed throughout the entire cosmos. [...]

The team combined lensing distortions of a large sample of ancient galaxies with those of the CMB to detect dark matter dating back to when the universe was just 1.7 billion years old. And this ancient dark matter paints a very different cosmic picture. "For the first time, we were measuring dark matter from almost the earliest moments of the universe," [University of Tokyo assistant professor Yuichi Harikane said in the statement]. "12 billion years ago, things were very different. You see more galaxies that are in the process of formation than at the present; the first galaxy clusters are starting to form as well." These clusters can be comprised of between 100 and 1,000 galaxies bound to large amounts of dark matter by gravity.

"Our finding is still uncertain," Harikane said. "But if it is true, it would suggest that the entire model is flawed as you go further back in time. This is exciting because if the result holds after the uncertainties are reduced, it could suggest an improvement of the model that may provide insight into the nature of dark matter itself." The team will continue to collect data to assess whether the Lambda-CDM model conforms to observations of dark matter in the early universe or if the assumptions behind the model need to be revised.

An anonymous reader quotes a report from Phys.Org: Scientists at the University of Virginia School of Medicine and their collaborators have used DNA to overcome a nearly insurmountable obstacle to engineer materials that would revolutionize electronics. One possible outcome of such engineered materials could be superconductors, which have zero electrical resistance, allowing electrons to flow unimpeded. That means that they don't lose energy and don't create heat, unlike current means of electrical transmission. Development of a superconductor that could be used widely at room temperature -- instead of at extremely high or low temperatures, as is now possible -- could lead to hyper-fast computers, shrink the size of electronic devices, allow high-speed trains to float on magnets and slash energy use, among other benefits.

One such superconductor was first proposed more than 50 years ago by Stanford physicist William A. Little. [...] One possible way to realize Little's idea for a superconductor is to modify lattices of carbon nanotubes, hollow cylinders of carbon so tiny they must be measured in nanometers -- billionths of a meter. But there was a huge challenge: controlling chemical reactions along the nanotubes so that the lattice could be assembled as precisely as needed and function as intended.

[Edward H. Egelman, Ph.D., of UVA's Department of Biochemistry and Molecular Genetics] and his collaborators found an answer in the very building blocks of life. They took DNA, the genetic material that tells living cells how to operate, and used it to guide a chemical reaction that would overcome the great barrier to Little's superconductor. In short, they used chemistry to perform astonishingly precise structural engineering -- construction at the level of individual molecules. The result was a lattice of carbon nanotubes assembled as needed for Little's room-temperature superconductor. [...] The lattice they built has not been tested for superconductivity, for now, but it offers proof of principle and has great potential for the future, the researchers say. The findings have been published in the journal Science.

Solid state drives use far less power than hard disc drives. But a new study unexpectedly reveals that their lifetime carbon footprint is much higher than their hard disc cousins, raising difficult questions for the computer industry. From a report: The benefits of SSDs over HDDs are legion. They are smaller, mechanically simpler, faster to read and write data than their hard disc cousins. They are also more energy efficient. So with many computer manufacturers and datacenter operators looking to reduce their carbon footprints, it's easy to imagine that all this makes the choice of memory easy. But all is not as it seems, say Swamit Tannu at University of Wisconsin in Madison and Prashant Nair at the University of British Columbia in Vancouver. SSDs have a dirty secret. Tannu and Nair have measured the carbon footprint per gigabyte of these devices across their entire lifetimes and, unexpectedly, it turns out that SSDs are significantly dirtier. "Compared to SSDs, the embodied [carbon] cost of HDDs is at least an order of magnitude lower," say the researchers.

Tannu and Nair come to their conclusion by adding up the amount of carbon emitted throughout the estimated 10-year lifespans of these devices. This includes the carbon emitted during manufacture, during operation, for transportation and for disposal. The carbon emitted during operation is straightforward to calculate. To read and write data, HDDs consume 4.2 Watts versus 1.3W for SSDs. The researchers calculate that a 1 terabyte HDD emits the equivalent of 159 kilograms of carbon dioxide during a 10-year operating lifespan. By comparison, a 1 terabyte SSD emits just 49.2 kg over 10 years. But SSDs are significantly more carbon intensive to manufacture. That's because the chip fabrication facilities for SSDs operate at extreme temperatures and pressures that are energy intensive to maintain. And bigger memories require more chips, which increases the footprint accordingly. All this adds up to a significant carbon footprint for SSD manufacture.

Tannu and Nair calculate that manufacturing a 1 terabyte SSD emits the equivalent of 320 kg of carbon dioxide. By comparison, a similar HDD emits just 40 kg. So the lifetime footprint for a 1 terabyte SSD is 369.2 kg of carbon dioxide equivalent versus 199 kg for an HDD. So HDDs are much cleaner. That's a counterintuitive result with important implications. At the very least, it suggests that computer manufacturers and cloud data storage operators should reconsider the way they use SSDs and HDDs. For example, almost 40 per cent of the carbon footprint of a desktop computer comes from its SSD, compared to just 4 per cent from the CPU and 11 per cent from the GPU.

Stem cell researchers in Israel have created synthetic mouse embryos without using a sperm or egg, then grown them in an artificial womb for eight days, a development that opens a window into a fascinating, potentially fraught realm of science that could one day be used to create replacement organs for humans. The Washington Post reports: The objective, scientists involved with the research said, is not to create mice or babies outside the womb, but to jump-start the understanding of how organs develop in embryos and to use that knowledge to develop new ways to heal people. From a clump of embryonic stem cells, scientists at the Weizmann Institute of Science created synthetic embryos that closely resembled real mouse embryos, with rudimentary beating hearts, blood circulation, folded brain tissue and intestinal tracts. The mouse embryos grew in an artificial womb and stopped developing after eight days, about a third of a mouse pregnancy.

The research, published Monday in the journal Cell, is far from growing a mouse, much less a human, outside the womb. It was a proof of concept that a complete synthetic embryo could be assembled from embryonic stem cells, and while the researchers were successful, it was a highly error-prone process, with only a small fraction of embryos going on to develop the beginnings of a beating heart and other organs. Although the synthetic mouse embryos bore a close resemblance to natural mouse embryos, they were not exactly the same and did not implant or result in pregnancies in real mice, according to Jacob Hanna, the stem cell scientist at the Weizmann Institute of Science who led the work.

The research, like other recent studies, puts the possibility of a complete human synthetic embryo on the horizon, several researchers said, making it necessary to continue a societal discussion about how these entities should be handled. Last year, the International Society for Stem Cell Research relaxed a historical "14-day rule" that said researchers could grow natural embryos for only 14 days in the laboratory, allowing researchers to seek approval for longer studies. Human embryo models are banned from being implanted into a uterus.

If time feels tighter than ever of late, blame it on the revolution. On 29 June this year, Earth racked up an unusual record: its shortest day since the 1960s, when scientists began measuring the planet's rotation with high-precision atomic clocks. From a report: Broadly speaking, Earth completes one full turn on its axis every 24 hours. That single spin marks out a day and drives the cycle of sunrise and sunset that has shaped patterns of life for billions of years. But the curtains fell early on 29 June, with midnight arriving 1.59 milliseconds sooner than expected. The past few years have seen a flurry of records fall, with shorter days being notched up ever more frequently. In 2020, the Earth turned out 28 of the shortest days in the past 50 years, with the shortest of those, on 19 July, shaving 1.47 milliseconds off the 86,400 seconds that make up 24 hours. The 29 June record came close to being broken again last month, when 26 July came in 1.5 milliseconds short.

So is the world speeding up? Over the longer term -- the geological timescales that compress the rise and fall of the dinosaurs into the blink of an eye -- the Earth is actually spinning more slowly than it used to. Wind the clock back 1.4bn years and a day would pass in less than 19 hours. On average, then, Earth days are getting longer rather than shorter, by about one 74,000th of a second each year. The moon is mostly to blame for the effect: the gravitational tug slightly distorts the planet, producing tidal friction that steadily slows the Earth's rotation. To keep clocks in line with the planet's spin, the International Telecommunication Union, a United Nations body, has taken to adding occasional leap seconds in June or December -- most recently in 2016 -- effectively stopping the clocks for a second so that the Earth can catch up. The first leap second was added in 1972. The next opportunity is in December 2022, although with Earth spinning so fast of late, it is unlikely to be needed.

Live and high-resolution images of a patient's internal organs are already possible with ultrasound imaging technology. But currently the technology "requires bulky and specialized equipment available only in hospitals and doctor's offices," explains an annoncement from MIT.

Now a new design by MIT engineers "might make the technology as wearable and accessible as buying Band-Aids at the pharmacy." In a paper appearing today in Science, the engineers present the design for a new ultrasound sticker — a stamp-sized device that sticks to skin and can provide continuous ultrasound imaging of internal organs for 48 hours.

The researchers applied the stickers to volunteers and showed the devices produced live, high-resolution images of major blood vessels and deeper organs such as the heart, lungs, and stomach. The stickers maintained a strong adhesion and captured changes in underlying organs as volunteers performed various activities, including sitting, standing, jogging, and biking....

From the stickers' images, the team was able to observe the changing diameter of major blood vessels when seated versus standing. The stickers also captured details of deeper organs, such as how the heart changes shape as it exerts during exercise. The researchers were also able to watch the stomach distend, then shrink back as volunteers drank then later passed juice out of their system. And as some volunteers lifted weights, the team could detect bright patterns in underlying muscles, signaling temporary microdamage.

"With imaging, we might be able to capture the moment in a workout before overuse, and stop before muscles become sore," says Chen. "We do not know when that moment might be yet, but now we can provide imaging data that experts can interpret."
They're already envisioning other possibilities: If the devices can be made to operate wirelessly — a goal the team is currently working toward — the ultrasound stickers could be made into wearable imaging products that patients could take home from a doctor's office or even buy at a pharmacy. "We envision a few patches adhered to different locations on the body, and the patches would communicate with your cellphone, where AI algorithms would analyze the images on demand," says the study's senior author, Xuanhe Zhao, professor of mechanical engineering and civil and environmental engineering at MIT.

"We believe we've opened a new era of wearable imaging: With a few patches on your body, you could see your internal organs."