Ars Technica reports NASA officials operating the International Space Station "are seriously concerned about a small Russian part of the station" — because it's leaking.

The "PrK" tunnel connecting a larger module to a docking port "has been leaking since September 2019... In February of this year NASA identified an increase in the leak rate from less than 1 pound of atmosphere a day to 2.4 pounds a day, and in April this rate increased to 3.7 pounds a day." A new report, published Thursday by NASA's inspector general, provides details not previously released by the space agency that underline the severity of the problem...

Despite years of investigation, neither Russian nor US officials have identified the underlying cause of the leak. "Although the root cause of the leak remains unknown, both agencies have narrowed their focus to internal and external welds," the report, signed by Deputy Inspector General George A. Scott, states. The plan to mitigate the risk is to keep the hatch on the Zvezda module leading to the PrK tunnel closed. Eventually, if the leak worsens further, this hatch might need to be closed permanently, reducing the number of Russian docking ports on the space station from four to three.

Publicly, NASA has sought to minimize concerns about the cracking issue because it remains, to date, confined to the PrK tunnel and has not spread to other parts of the station. Nevertheless, Ars reported in June that the cracking issue has reached the highest level of concern on the space agency's 5x5 "risk matrix" to classify the likelihood and consequence of risks to spaceflight activities. The Russian leaks are now classified as a "5" both in terms of high likelihood and high consequence.
"According to NASA, Roscosmos is confident they will be able to monitor and close the hatch to the Service Module prior to the leak rate reaching an untenable level. However, NASA and Roscosmos have not reached an agreement on the point at which the leak rate is untenable."

The article adds that the Space Station should reach its end of life by either 2028 or 2030, and NASA "intends to transition its activities in low-Earth orbit onto private space stations," and has funded Axiom Space, Blue Origin, and Voyager Space for initial development.

"There is general uncertainty as to whether any of the private space station operators will be ready in 2030."

The world's oldest and largest cancer research association "found excessive levels of alcohol consumption increase the risk for six different types of cancer," reports CBS News: "Some of this is happening through chronic inflammation. We also know that alcohol changes the microbiome, so those are the bacteria that live in your gut, and that can also increase the risk," Dr. Céline Gounder, CBS News medical contributor and editor-at-large for public health at KFF Health News, recently said on "CBS Mornings."

But how much is too much when it comes to drinking? We asked experts what to know. "Excessive levels of alcohol" equates to about three or more drinks per day for women and four or more drinks per day for men, Gounder said... Other studies have shown, however, there is no "safe amount" of alcohol, Gounder said, particularly if you have underlying medical conditions. "If you don't drink, don't start drinking. If you do drink, really try to keep it within moderation," she said.

Dr. Amy Commander, medical director of the Mass General Cancer Center specializing in breast cancer, told CBS News alcohol is the third leading modifiable risk factor that can increase cancer risk after accounting for cigarette smoking and excess body weight. [Other factors include physical inactivity — and diet]. "There really isn't a safe amount of alcohol for consumption," she said. "In fact, it's best to not drink alcohol at all, but that is obviously hard for many people. So I think it's really important for individuals to just be mindful of their alcohol consumption and certainly drink less."
The article also includes an interesting statistic from the association's latest Cancer Progress Report: from 1991 to 2021 there's been a 33% reduction in overall cancer deaths in the U.S. That's 4.1 million lives saved — roughly 136,667 lives saved each year.

"So that is hopeful," Commander said, adding that when it comes to preventing cancer, alcohol is just "one piece of the puzzle."

Slashdot reader Hmmmmmm shared this report from NBC News: Octopuses don't always hunt alone — but their partners aren't who you'd expect. A new study shows that some members of the species Octopus cyanea maraud around the seafloor in hunting groups with fish, which sometimes include several fish species at once.

The research, published in the journal Nature on Monday, even suggests that the famously intelligent animals organized the hunting groups' decisions, including what they should prey upon. What's more, the researchers witnessed the cephalopod species — often called the big blue or day octopus — punching companion fish, apparently to keep them on task and contributing to the collective effort... "If the group is very still and everyone is around the octopus, it starts punching, but if the group is moving along the habitat, this means that they're looking for prey, so the octopus is happy. It doesn't punch anyone..." [said Eduardo Sampaio, a postdoctoral researcher at the Max Planck Institute of Animal Behavior and the lead author of the research].
NBC News says the study is "an indication that at least one octopus species has characteristics and markers of intelligence that scientists once considered common only in vertebrates."

Lead author Sampaio agrees that "We are very similar to these animals. In terms of sentience, they are at a very close level or closer than we think toward us."

Researchers propose a "deceptively simple" way to sequester carbon, reports the Washington Post: burying wood underground: Forests are Earth's lungs, sucking up six times more carbon dioxide (CO2) than the amount people pump into the atmosphere every year by burning coal and other fossil fuels. But much of that carbon quickly makes its way back into the air once insects, fungi and bacteria chew through leaves and other plant material. Even wood, the hardiest part of a tree, will succumb within a few decades to these decomposers. What if that decay could be delayed? Under the right conditions, tons of wood could be buried underground in wood vaults, locking in a portion of human-generated CO2 for potentially thousands of years.

While other carbon-capture technologies rely on expensive and energy-intensive machines to extract CO2, the tools for putting wood underground are simple: a tractor and a backhoe.

Finding the right conditions to impede decomposition over millennia is the tough part. To test the idea, [Ning Zeng, a University of Maryland climate scientist] worked with colleagues in Quebec to entomb wood under clay soil on a crop field about 30 miles east of Montreal... But when the scientists went digging in 2013, they uncovered something unexpected: A piece of wood already buried about 6½ feet underground. The craggy, waterlogged piece of eastern red cedar appeared remarkably well preserved. "I remember standing there looking at other people, thinking, 'Do we really need to continue this experiment?'" Zeng recalled. "Because here's the evidence...."

Radiocarbon dating revealed the log to be 3,775 years old, give or take a few decades. Comparing the old chunk of wood to a freshly cut piece of cedar showed the ancient log lost less than 5 percent of its carbon over the millennia. The log was surrounded by stagnant, oxygen-deprived groundwater and covered by an impermeable layer of clay, preventing fungi and insects from consuming the wood. Lignin, a tough material that gives trees their strength, protected the wood's carbohydrates from subterranean bacteria...

The researchers estimate buried wood can sequester up 10 billion tons of CO2 per year, which is more than a quarter of annual global emissions from energy, according to the International Energy Agency.

Black hole jets, which spew near-light-speed particle beams, can trigger nearby white dwarf stars to explode by igniting hydrogen layers on their surfaces. "We don't know what's going on, but it's just a very exciting finding," said Alec Lessing, an astrophysicist at Stanford University and lead author of a new study describing the phenomenon, in an ESA release. Gizmodo reports: In the recent work -- set to publish in The Astrophysical Journal and is currently hosted on the preprint server arXiv -- the team studied 135 novae in the galaxy M87, which hosts a supermassive black hole of the same name at its core. M87 is 6.5 billion times the mass of the Sun and was the first black hole to be directly imaged, in work done in 2019 by the Event Horizon Telescope Collaboration. The team found twice as many novae erupting near M87's 3,000 light-year-long plasma jet than elsewhere in the galaxy. The Hubble Space Telescope also directly imaged M87's jet, which you can see below in luminous blue detail. Though it looks fairly calm in the image, the distance deceives you: this is a long tendril of superheated, near-light speed particles, somehow triggering stars to erupt.

Though previous researchers had suggested there was more activity in the jet's vicinity, new observations with Hubble's wider-view cameras revealed more of the novae brightening -- indicating they were blowing hydrogen up off their surface layers. "There's something that the jet is doing to the star systems that wander into the surrounding neighborhood. Maybe the jet somehow snowplows hydrogen fuel onto the white dwarfs, causing them to erupt more frequently," Lessing said in the release. "But it's not clear that it's a physical pushing. It could be the effect of the pressure of the light emanating from the jet. When you deliver hydrogen faster, you get eruptions faster." The new Hubble images of M87 are also the deepest yet taken, thanks to the newer cameras on Hubble. Though the team wrote in the paper that there's between a 0.1% to 1% chance that their observations can be chalked up to randomness, most signs point to the jet somehow catalyzing the stellar eruptions.

Meta Platforms' claims that Facebook doesn't polarize Americans came under new doubt as the journal Science raised questions about a prominent research paper the tech giant has cited to support its position. WSJ: In an editorial Thursday, Science said that Meta's emergency efforts to calm its platforms in the wake of the 2020 election may have swayed the conclusions of the paper, which the journal published in July 2023. The editorial, titled "Context matters in social media," was prompted by a letter that Science also published presenting new criticism of the paper. Because the study of Facebook's algorithms relied on data provided by Meta when it was undertaking extraordinary efforts to restrain incendiary political content, the letter's authors argue that the paper may have overstated the case that social media algorithms didn't contribute to political polarization.

Such criticisms of peer-reviewed research often appear below papers in academic journals, but Science's editors felt their editorial was needed to more prominently caveat this original paper's conclusions, said Holden Thorp, Science's editor in chief. "It was incumbent on us to come up with a way somehow that people who would come to the paper would know of these concerns,â Thorp said in an interview. While no correction was warranted, he said, "There's an election coming up, and we care about people citing this paper." Meta said it had been transparent with researchers about its actions during the time of the study, and the company and its research partners say it had no control over the Science paper's conclusions. Meta called debates of the sort aired on Thursday as part of the research process.

The European Space Agency (ESA) plans to launch a satellite into Earth's orbit in 2027 to watch it get wrecked as it reenters the atmosphere. From a report: The project is intended to help understand how exactly satellites break apart so that scientists can learn how to prevent the creation of more space debris. Space junk is becoming a bigger problem as we send more satellites into orbit, but there are efforts to try and address it. This mission is part of the ESA's Zero Debris Charter initiative to stop the creation of additional space debris by 2030. The mission is called the Destructive Reentry Assessment Container Object (DRACO), and the insides of the satellite will collect data as the craft gets destroyed during reentry into the atmosphere. It will also contain a 40-centimeter capsule designed to survive the destruction that will transmit the collected data as the capsule moves toward the ocean.

An anonymous reader quotes a report from 404 Media: After a horseback riding accident left him paralyzed from the waist down in 2009, former jockey Michael Straight learned to walk again with the help of a $100,000 ReWalk Personal exoskeleton. Earlier this month, that exoskeleton broke because of a malfunctioning piece of wiring in an accompanying watch that makes the exoskeleton work. The manufacturer refused to fix it, saying the machine was now too old to be serviced, and Straight once again couldn't walk anymore. "After 371,091 steps my exoskeleton is being retired after 10 years of unbelievable physical therapy," Straight posted on Facebook on September 16. "The reasons [sic] why it has stopped is a pathetic excuse for a bad company to try and make more money. The reason it stopped is because of a battery in the watch I wear to operate the machine. I called thinking it was no big deal, yet I was told they stopped working on any machine that was 5 years or older. I find it very hard to believe after paying nearly $100,000 for the machine and training that a $20 battery for the watch is the reason I can't walk anymore?"

Straight's experience is a nightmare scenario that highlights what happens when companies decide to stop supporting their products and do not actively support independent repair. It's also what happens without the protection of right to repair legislation that requires manufacturers to make repair parts, guides, and tools available to the general public. Specifically, a connection wire became desoldered from the battery in a watch that connects to the exoskeleton: "It's not the actual battery, but it's the little green connection piece we need to be the right fit and that's been our problem," Straight posted on Facebook. Straight's personal exoskeleton was broken for two months, he said in a video on Facebook. He was eventually able to get the device fixed after attention from an article in the Paulick Report, a website about the horse industry, and a spot on local TV. "It took me two months, and I got no results," he said in the video. With social media and news attention, "it only took you all four days, and look at the results," he said earlier this week while standing in the exoskeleton. "This is the dystopian nightmare that we've kind of entered in, where the manufacturer perspective on products is that their responsibility completely ends when it hands it over to a customer. That's not good enough for a device like this, but it's also the same thing we see up and down with every single product," Nathan Proctor, head of citizen rights group US PIRG's right to repair project told 404 Media. "People need to be able to fix things, there needs to be a plan in place. A $100,000 product you can only use as long as the battery lasts, that's enraging. We should not have to tolerate a society where this happens."

"We have all this technology we release into the wild and it changes people's lives, but there's no long-term thinking. Manufacturers currently have no legal obligation to support the equipment indefinitely and there's no requirements that they publish sufficient documentation to allow others to do it," Proctor said. "We need to set minimum standards for documentation so that, even if a company goes bankrupt or falls off the face of the earth, a technician with sufficient knowledge can fix it."

An anonymous reader shares a report: In the decade-long fight to control CRISPR, the super-tool for modifying DNA, it's been common for lawyers to try to overturn patents held by competitors by pointing out errors or inconsistencies. But now, in a surprise twist, the team that earned the Nobel Prize in chemistry for developing CRISPR is asking to cancel two of their own seminal patents, MIT Technology Review has learned.

The decision could affect who gets to collect the lucrative licensing fees on using the technology. The request to withdraw the pair of European patents, by lawyers for Nobelists Emmanuelle Charpentier and Jennifer Doudna, comes after a damaging August opinion from a European technical appeals board, which ruled that the duo's earliest patent filing didn't explain CRISPR well enough for other scientists to use it and doesn't count as a proper invention. The Nobel laureates' lawyers say the decision is so wrong and unfair that they have no choice but to preemptively cancel their patents, a scorched-earth tactic whose aim is to prevent the unfavorable legal finding from being recorded as the reason.

"The New York Times reports that astronomers have discovered a black hole spitting energy across 23 million light-years of intergalactic space (source paywalled; alternative source)," writes longtime Slashdot reader fahrbot-bot. From the report: Two jets, shooting in opposite directions, compose the biggest lightning bolt ever seen in the sky -- about 140 times as long as our own Milky Way galaxy is wide, and more than 10 times the distance from Earth to Andromeda, the nearest large spiral galaxy. Follow-up observations with optical telescopes traced the eruption to a galaxy 7.5 billion light-years away that existed when the universe was less than half its current age of 14 billion years. At the heart of that galaxy was a black hole spewing energy equivalent to the output of more than a trillion stars.

"The Milky Way would be a little dot in these two giant eruptions," said Martijn Oei, a postdoctoral researcher at the California Institute of Technology. Dr. Oei led the team that made the discovery, which was reported in Nature on Sept. 18 and announced on the journal's cover with an illustration reminiscent of a "Star Wars" poster. The astronomers have named the black hole Porphyrion, after a giant in Greek mythology -- a son of Gaia -- who fought the gods and lost. The discovery raises new questions of how such black holes could affect the evolution and structure of the universe.

New research suggests that Mars' missing atmosphere may have been absorbed by minerals in the planet's clays, in a process similar to geological reactions on Earth. It may explain Mars' loss of its atmosphere and potential to support life, with methane possibly still present and usable as an energy source. Longtime Slashdot reader Baron_Yam writes: Conditions on early Mars were highly likely to have had CO2 carried down into the ground by water, where reactions with rock resulted in iron oxide (and Mars' rust-red surface) and released hydrogen, which in turn reacted with the water to form methane that was bound in smectite clays. It's all still there, just under the surface. The research has been published in the journal Science Advances.

Scientists have proposed a method to deflect dangerous asteroids using nuclear explosions, not by directly blowing them up, but by detonating a bomb above the surface to create an X-ray burst that vaporizes part of the asteroid and changes its course. Experiments using the Z machine at Sandia National Laboratories simulated this process, showing that it could potentially redirect even large asteroids to prevent catastrophic impacts on Earth. Space.com reports: In a new study, the researchers employed the Z machine at Sandia National Laboratory, the most powerful laboratory source of radiation in the world. It generates powerful electric pulses, magnetic fields and X-rays to find out how materials react under high pressures and temperatures. "At present, there is only one way to generate an intense enough X-ray burst to do an experiment like this, and that's using the Z Machine," said [Nathan Moore, a physicist at Sandia National Laboratories in Albuquerque, N.M.]. The scientists used electrical pulses from the Z machine to generate powerful magnetic fields. These in turn compressed argon gas to generate plasma, the same form of matter that makes up lightning and stars. This argon plasma produced the X-ray burst the researchers needed to simulate a similar one from a nuclear explosion.

"You have to concentrate a lot of power, about 80 trillion watts, into a very small space, the size of a pencil lead, and very quickly, about 100 billionths of second, to generate a hot enough argon plasma, several millions of degrees, to make a powerful enough X-ray burst to heat the asteroid material surface to tens of thousands of degrees to give it enough push," Moore said. The scientists hung up a pair of targets in a vacuum, each 0.47 inches (12 millimeters) wide -- one made of quartz, the other of fused silica. These materials are similar in composition to known asteroids. Previous attempts to study various asteroid deflection strategies all held targets fixed in place, "which wasn't very realistic," Moore said. "After all, asteroids in outer space aren't attached to anything. Besides, how would a mock asteroid accelerate realistically if it was anchored down?"

To overcome this problem, the researchers devised what they called "X-ray scissors." They hung the targets up using thin metal foil just 13 microns thick, or about one-eighth the thickness of an average human hair. This foil vaporized when the X-rays hit it, freeing the targets to accelerate naturally in space. The X-ray pulses generated vapor plumes from each target and accelerated each one to about 155 mph (250 km/h), matching computational predictions. "The ability to deflect miniature asteroids in a laboratory using the Z Machine is unlike anything else you can do anywhere else on Earth," Moore said. Scaling these findings up to a 2.5-mile-wide (4 kilometer) asteroid, with a 1 megaton nuclear bomb exploding about 1.25 miles (2 km) from its surface, the researchers suggested the resulting push could help deflect dangerous asteroids away from Earth.

"For reference, a 4-km [2.5-mile] asteroid is predicted to be large enough to cause global devastation and possible disruption of civilization, according to the NASA Planetary Defense Strategy and Action Plan," Moore said. Moore noted that asteroids come in a variety of compositions. "This new technique can be used to investigate the deflection response of different asteroid materials," he said. "Understanding how different asteroid materials vaporize and deflect will be critical for preparing for a planetary defense mission, should the need arise." The study has been published in the journal Nature Physics.

silverjacket writes: A feature for The New Yorker describes a plan to use robots to mine lunar materials and build a radio telescope on the far side of the moon that will help answer questions about the early universe. An excerpt from the story: he dream of a lunar telescope dates to the nineteen-sixties. The moon has the advantage of being hundreds of thousands of miles away from earthly electronics; on the far side of the moon, in particular, there's virtually no noise from human technology or the Earth's magnetosphere. After the Apollo landings, however, interest in the moon waned. Jack Burns, an astrophysicist who is now at the University of Colorado Boulder, has been advocating for a moon-based telescope since 1984. "I never, never would have guessed that it would take this long," he told me. "I just won't accept no for an answer." Today, Burns is the chief scientist of FarView, as well as the primary investigator of a sort of mini-FarView: FARSIDE, which would have one or two hundred antennas instead of a hundred thousand.

If FarView is built, it would be able to detect some of the oldest light in existence. The universe began 13.8 billion years ago as a dense, fast-expanding soup of matter and energy; around three hundred and eighty thousand years later, it had cooled enough for hydrogen atoms to hold together. After that came the Cosmic Dark Ages: millions of years without stars or galaxies, a period we know very little about. But hydrogen occasionally releases light with a wavelength of twenty-one centimetres -- radio waves. Some of that light is still around.

Because twenty-one-centimetre radiation is stretched by the steady expansion of the universe -- it's now tens to hundreds of metres long -- scientists can figure out how old it is, and how far away. (The longer the wavelength, the older the light and the more distant its source.) This means that if scientists can build a radio telescope on the moon, they will be able to create a three-dimensional picture of the early universe.

schwit1 shares a report SpaceNews with the caption: "Failures aren't failures if you learn from them." From the report: Chinese commercial rocket firm Deep Blue Aerospace conducted a first-stage rocket hop test Sunday, experiencing a partial failure during the final moments of landing. Deep Blue Aerospace carried out the test at 1:40 a.m. Eastern (0540 UTC) Sept. 22 at the firm's Ejin Banner Spaceport in Inner Mongolia using a Nebula-1 rocket first stage. Footage of the vertical liftoff, vertical landing test shows the rocket ascending to a predetermined altitude before shutting off two of the three engines used for the 179-second flight. Landing legs deployed as planned, and the stage hovered above its planned landing spot. However an anomaly during the final engine shutdown phase led to a higher-than-expected landing altitude, leading to partial damage. You can watch the landing attempt and explosion here.

Industrial civilisation is close to breaching a seventh planetary boundary, and may already have crossed it, according to scientists who have compiled the latest report on the state of the world's life-support systems. From a report: "Ocean acidification is approaching a critical threshold," particularly in higher-latitude regions, says the latest report on planetary boundaries. "The growing acidification poses an increasing threat to marine ecosystems." The report, from the Potsdam Institute for Climate Impact Research (PIK), builds on years of research showing there are nine systems and processes -- the planetary boundaries -- that contribute to the stability of the planet's life-support functions.

Thresholds beyond which they can no longer properly function have already been breached in six. Climate change, the introduction of novel entities, change in biosphere integrity and modification of biogeochemical flows are judged to be in high-risk zones, while planetary boundaries are also transgressed in land system change and freshwater change but to a lesser extent. All have worsened, according to the data. Stratospheric ozone depletion has remained stable, however, and there has been a slight improvement in atmospheric aerosol loading, the research says. At a briefing outlining the findings, Levke Caesar, a climate physicist at PIK and co-author of the report, said there were two reasons the levels of ocean acidification were concerning.

SpaceX plans to launch about five uncrewed Starship missions to Mars in two years, CEO Elon Musk said on Sunday. From a report: Earlier this month, Musk had said that the first Starships to Mars would launch in two years "when the next Earth-Mars transfer window opens."

The CEO on Sunday said that the first crewed mission timeline will depend upon the success of the uncrewed flights. If the uncrewed missions land safely, crewed missions will be launched in four years. However, in case of challenges, crewed missions will be postponed by another two years, Musk said.

An anonymous reader shared this story from SFGate: A boy who was kidnapped from an Oakland playground in 1951 has been found alive on the East Coast, a remarkable resolution to a mystery that has haunted his family for over half a century.

On February 21, 1951, 6-year-old Luis Armando Albino was playing with his older brother Roger at Jefferson Square Park. The boys had recently immigrated with their mother and four other siblings from Puerto Rico... That afternoon, Luis and 10-year-old Roger walked down the block from their home at 730 Brush Street to play in the park. They were approached by a woman in her 30s, wearing a green bandana over her hair, who began chatting with Luis in Spanish. She promised she would buy him candy if he came along with her, and little Luis agreed to join her. Wary, Roger trailed the pair for a while before returning home to alert an adult to the strange encounter. Oakland police were called by frantic family members and a search was immediately launched...

Antonia [the boy's mother] was convinced her son was alive. "She came once a week, then once a month, then at least once a year, to see the shake of the head, to have the answer 'no' translated for her although she could read it in the officers' faces," the Oakland Tribune wrote in 1966...

Decades passed.

In 2020, Luis' niece, Alida Alequin, took a DNA test on a whim, the Mercury News reported. The service returned several possible family members to the Oakland woman. One of them was a man who Alequin had never met. After some internet sleuthing, she began to suspect this man might be the missing uncle she'd heard so much about. She reached out to the man but didn't hear back.

Earlier this year, Alequin tried again. Armed with photos, she took her evidence to the Oakland Police Department's missing persons unit. In short order, the FBI and California Department of Justice were also investigating Alequin's lead. They discovered the man was living on the East Coast, had worked as a firefighter and served two tours in Vietnam with the Marine Corps. This week, the Mercury News first reported that a DNA test confirmed what Alequin suspected: This was Luis Albino.

In June, Luis flew to California to reunite with his family, among them his devoted brother Roger... For over 70 years, he lived on the East Coast believing he was the son of another couple....

When Luis met Alequin for the first time this summer, he held her in an embrace. "Thank you," he said, "for finding me."

Polypropylene and polyethylene plastics "can be recycled," reports Ars Technica. But as "polyolefin" polymers, "the process can be difficult and often produces large quantities of the greenhouse gas methane.

"Now, researchers at the University of California, Berkeley have come up with a method of recycling these polymers that uses catalysts that easily break their bonds, converting them into propylene and isobutylene, which are gasses at room temperature. Those gasses can then be recycled into new plastics..." [T]he previous catalysts were expensive metals that did not remain pure long enough to convert all of the plastic into gas. Using sodium on alumina followed by tungsten oxide on silica proved much more economical and effective, even though the high temperatures required for the reaction added a bit to the cost. In both plastics, exposure to sodium on alumina broke each polymer chain into shorter polymer chains and created breakable carbon-carbon double bonds at the ends. The chains continued to break over and over.

Both then underwent a second process known as olefin metathesis. They were exposed to a stream of ethylene gas flowing into a reaction chamber while being introduced to tungsten oxide on silica, which resulted in the breakage of the carbon-carbon bonds. The reaction breaks all the carbon-carbon bonds in polyethylene and polypropylene, with the carbon atoms released during the breaking of these bonds ending up attached to molecules of ethylene... The entire chain is catalyzed until polyethylene is fully converted to propylene, and polypropylene is converted to a mixture of propylene and isobutylene. This method has high selectivity — meaning it produces a large amount of the desired product.

That means propylene derived from polyethylene, and both propylene and isobutylene derived from polypropylene. Both of these chemicals are in high demand, since propylene is an important raw material for the chemical industry, while isobutylene is a frequently used monomer in many different polymers, including synthetic rubber and a gasoline additive.
"Because plastics are often mixed at recycling centers, the researchers wanted to see what would happen if polypropylene and polyethylene underwent isomerizing ethenolysis together," the article adds. "The reaction was successful, converting the mixture into propylene and isobutylene, with slightly more propylene than isobutylene." The reaction worked, even if there were contaminants from other plastics. And "When the research team increased the scale of the experiment, it produced the same yield, which looks promising for the future...."

The researchers hope this some day could reduce the demand for chemicals derived from fossil fuels.

Thanks to Slashdot reader echo123 for sharing the article.

"In all likelihood, in the next 25 years, we'll find evidence of life on another planet..." begins a new essay by author Dave Eggers in the Washington Post.

"In more than a dozen conversations with some of the best minds in astrophysics, I did not meet anyone who was doubtful about finding evidence of life elsewhere — most likely on an exoplanet beyond our solar system. It was not a matter of if. It was a matter of when." [A]ll evidence points to us getting closer, every year, to identifying moons in our solar system, or exoplanets beyond it, that can sustain life. And if we don't find conditions for life on the moons near us, we'll find it on exoplanets — that is, planets outside our solar system. Within the next few decades, we'll likely find an exoplanet that has an atmosphere, that has water, that has carbon and methane and oxygen. Or some combination of those things.

And thus, the conditions for life. In a few years, NASA will launch the Nancy Grace Roman Space Telescope, which will have a panoramic field of vision a hundred times greater than the Hubble Space Telescope. And on the Nancy Grace Roman Space Telescope — we'll call it Roman from here on out — there will be a coronagraph, a device designed to perform something called, beautifully, starlight suppression. Starlight suppression is the blocking of the rays of a faraway star so that we can see behind it and around it. Once we can master starlight suppression, with Roman and NASA's next astrophysics flagship, the Habitable Worlds Observatory, we'll find the planets where life might exist.

To recap: For thousands of years, humans have wondered whether life is possible elsewhere in the universe, and now we're within striking distance of being able to say not only yes, but here.

And yet this is not front-page news. I didn't really know how close we were to this milestone until I visited the Jet Propulsion Laboratory in Pasadena, Calif., on a hot and dry day in June...
Eggers' article is part of an ongoing series called "Who is government?" (For the series Michael Lewis also profiled the uncelebrated number-crunchers at the U.S. Department of Labor, while Casey Cep wrote about the use of DNA to identify the remains of World War II soldiers for America's Veteran Affairs' department's.) But this week Eggers wrote that the work being done at NASA's Jet Propulsion Laboratory "is the most inspiring research and exploration being done by any humans on our planet..."

"No billionaires will fund work like this because there's no money in it. This is government-funded research to determine how the universe was created and whether we are alone in it. If NASA and JPL were not doing it, it would not be done."

Eggers emphasizes later that "doesn't mean it's intelligent life, or even semi-intelligent life. It could be bacteria, or some kind of interstellar sea cucumber. But whatever form it takes, we are close to finding it..."

Friday America's Federal Trade Commission brought action against three companies for "anticompetitive and unfair" practices "that have artificially inflated the list price of insulin."

For years, many of the millions of Americans who need insulin to survive "have been forced to pay exorbitant prices for a product that's inexpensive to make," writes NPR. "Now, the federal government is targeting one part of the system behind high insulin prices." While out-of-pocket costs have gone down for many people to $35 a month, questions remain on how the drug became so expensive in the first place. In a new lawsuit filed Friday, the Federal Trade Commission said it's going after one link in the chain: pharmacy benefit managers. The FTC brought action against the top pharmacy benefit managers (PBMs) — CVS Health's Caremark Rx, Cigna's Express Scripts, and United Health Group's OptumRx — saying the companies created a "perverse drug rebate system" that artificially inflates the cost of insulin. If the suit is successful, it could further drive down costs for patients at the pharmacy counter.

PBMs are essentially the middlemen between drug manufacturers and insurance providers. Their job is to reduce drug prices. But the process is complex and opaque, and critics say they're actually driving prices up for patients. The FTC said a big issue is that PBMs' revenue is tied to rebates and fees — which are based on a percentage of a drug's list price. Essentially, in the case of insulin, when the drug costed more, it generated higher rebates and fees for PBMs. "Even when lower list price insulins became available that could have been more affordable for vulnerable patients, the PBMs systemically excluded them in favor of high list price, highly rebated insulin products," the FTC said in a press release on Friday.

The three PBMs named in the FTC lawsuit make up about 80% of the market. According to the suit, the PBMs collected billions of dollars in rebates and fees while insulin became increasingly unaffordable. Over the last two decades, the cost of the lifesaving drug shot up 600% — forcing many Americans with diabetes to ration their medication and jeopardize their health. In 2019, one 1 of 4 insulin patients was unable to afford their medication, according to the FTC. Some people have died.
The FTC's statement says the companies "have abused their economic power by rigging pharmaceutical supply chain competition in their favor, forcing patients to pay more for life-saving medication... While PBM respondents collected billions in rebates and associated fees according to the complaint, by 2019 one out of every four insulin patients was unable to afford their medication..."

"[A]ll drug manufacturers should be on notice that their participation in the type of conduct challenged here raises serious concerns, and that the Bureau of Competition may recommend suing drug manufacturers in any future enforcement actions."