Slashdot reader sciencehabit writes: Think search and rescue animal, and you're likely to picture a dog in an orange vest. But a Tanzanian nonprofit wants you to imagine something else: the African giant pouched rat. Donna Kean and her colleagues at APOPO, a nonprofit that trains pouched rats to save lives, have spent the past 2 decades working with the curious animals (Cricetomys ansorgei) to sniff out tuberculosis and track down land mines. Now, they're moving on to search and rescue.

Science caught up with Kean to chat about the new project, known as RescueRats. Topics include, just how to train a rat, what advantages they have over dogs, and whether people would be freaked out about a rodent coming to save them.

"What do astronomers eat for breakfast on the day that their $10 billion telescope launches into space?" asks the New York Times. "Their fingernails."

The worst-case scenario is "You work for years and it all goes up in a puff of smoke," they're told by Marcia Rieke of the University of Arizona: Dr. Rieke admits her fingers will be crossed on the morning of December 24 when she tunes in for the launch of the James Webb Space Telescope. For 20 years, she has been working to design and build an ultrasensitive infrared camera that will live aboard the spacecraft. The Webb is the vaunted bigger and more powerful successor to the Hubble Space Telescope. Astronomers expect that it will pierce a dark curtain of ignorance and supposition about the early days of the universe, and allow them to snoop on nearby exoplanets.

After $10 billion and years of delays, the telescope is finally scheduled to lift off from a European launch site in French Guiana on its way to a point a million miles on the other side of the moon... [T]here is plenty to be anxious about. The Ariane 5 rocket that is carrying the spacecraft has seldom failed to deliver its payloads to orbit. But even if it survives the launch, the telescope will have a long way to go. Over the following month it will have to execute a series of maneuvers with 344 "single points of failure" in order to unfurl its big golden mirror and deploy five thin layers of a giant plastic sunscreen that will keep the telescope and its instruments in the cold and dark. Engineers and astronomers call this interval six months of high anxiety because there is no prospect of any human or robotic intervention or rescue should something go wrong.

But if all those steps succeed, what astronomers see through that telescope could change everything. They hope to spot the first stars and galaxies emerging from the primordial fog when the universe was only 100 million years or so old, in short the first steps out of the big bang toward the cozy light show we inhabit today.
Tod Lauer, an astronomer at NOIRLab in Tucson, Arizona, remembers the launch of the original Hubble Space Telescope — and told the Times that astronomers had to trust their colleagues in rocket and spacecraft engineering to get it right.

"Someone who knows how to fly a $10 billion spacecraft on a precision trajectory is not going to be impressed by an astronomer, who never took an engineering course in his life, cowering behind his laptop watching the launch," Dr. Lauer said. "You feel admiration and empathy for those people, and try to act worthy of the incredible gift that they are bringing to world."

On Friday the manufacturer of the rocket carrying the teescope tweeted an update. "Target launch date is December 24 at 12:20 am UTC," and confirmed it again on Saturday...

"Ridiculous, seemingly arbitrary price markups are a defining characteristic of the $4-trillion U.S. healthcare system — and a key reason Americans pay more for treatment than anyone else in the world," writes a business columnist for the Los Angeles Times.

"But to see price hikes of as much as 675% being imposed in real time, automatically, by a hospital's computer system still takes your breath away."

Long-time Slashdot reader fahrbot-bot quotes their report: I got to view this for myself after a former operating-room nurse at Scripps Memorial Hospital in Encinitas shared with me screenshots of the facility's electronic health record system.... What they show are price hikes ranging from 575% to 675% being automatically generated by the hospital's software. The eye-popping increases are so routine, apparently, the software even displays the formula it uses to convert reasonable medical costs to billed amounts that are much, much higher. For example, one screenshot is for sutures — that is, medical thread, a.k.a. stitches. Scripps' system put the basic "cost per unit" at $19.30. But the system said the "computed charge per unit" was $149.58. This is how much the patient and his or her insurer would be billed.

The system helpfully included a formula for reaching this amount: "$149.58 = $19.30 + ($19.30 x 675%)."

You read that right. Scripps' automated system took the actual cost of sutures, imposed an apparently preset 675% markup and produced a billed amount that was orders of magnitude higher than the true price. This is separate from any additional charges for the doctor, anesthesiologist, X-rays or hospital facilities.

Call it institutionalized price gouging. And it's apparently widespread because the same or similar software is used by other hospitals nationwide, including UCLA, and around the world... Healthcare providers routinely ignore the actual cost of treatment when calculating bills and instead cook up nonsensical figures to push reimbursement from insurers higher. For the millions of people without health insurance, those sky-high prices are what they're stuck with (although most hospitals, including Scripps, typically will offer discounts in such circumstances).

A long and strikingly critical article that reviews the state of the Russian space program was published in the state-aligned newspaper MK this week. This article was written by Dmitry Popov, who has worked at the publication since 1992. Ars Technica reports: The article, translated for Ars by Rob Mitchell, is titled "The Space Program Is Rotting from Within." It begins with the declaration that Russia's space program has a shortage of competent and highly qualified staff, obsolete facilities and technology, and "systemic leadership weakness." And that's just the opening paragraph. Popov goes on to state that Russian space companies are delinquent on promised deliveries for hundreds of contracts. For example, the Khrunichev Center agreed to deliver 10 booster cores for the Angara A5 rocket five years ago. The first five cores were delivered only in March of this year, and the other five are not yet completed. [...] Popov said Roscosmos is struggling even to build its mainstay vehicles, the Soyuz rockets and Progress spacecraft. Consider a recent docking issue with the Progress vehicle, which carries supplies to the Russian segment of the International Space Station.

Popov further expressed concern about reliance on Germany to help fuel the Soyuz rocket and the Soyuz spacecraft that launches humans. The issue is that vernier thrusters on the Soyuz boosters and in the de-orbit engines of the Soyuz-MS spacecraft use a special grade of highly refined hydrogen peroxide. Production of this hydrogen peroxide in Russia, however, depends on deliveries of chemicals produced by a German company called Evonik Resource Efficiency GmbH. These deliveries are subject to limitation by international sanctions against the Russian Federation. "That is, the West can stop Russian space launches with a single keystroke," Popov wrote.

The article also discusses the Vostochny Cosmodrome, a spaceport in eastern Russia that has been a priority for President Vladimir Putin. However this project, under Rogozin's stewardship, has been beset by construction delays and corruption, such as embezzlement. Of the nearly 1,200 structures planned for construction at the spaceport, only about 200 have been completed, Popov wrote. Construction has yet to begin on more than 40 percent of them. Already, the planned launch of Angara A5 rockets from Vostochny has been delayed from 2021 to 2023, as criminal investigations continue. Popov then turns to Russia's so-called Moon program, which requires development of the Oryol, or "Eagle," spacecraft to fly cosmonauts into deep space. This vehicle was intended to both replace the Soyuz for transporting cosmonauts to the International Space Station and to form part of the lunar program. But aside from that, everything is going swell with Russia's Moon program.

Popov also criticizes Rogozin for over-promising on Russian launch efficiency and under-delivering. For example, Roscosmos said there would be 44 space launches in 2019, and 25 were conducted. In 2020, 40 launches were planned and just 17 conducted. This year, Russia has conducted fewer than half of its planned 47 launches. Roscosmos, therefore, has decided to no longer publish its planned number of launches. The overall portrait Popov paints of Roscosmos is that of a wasteful, increasingly decrepit enterprise where almost no money is being invested into the present or future. Instead, the focus seems to be providing high-paying jobs for a handful of technocrats, whose salaries are worth hundreds of thousands of dollars a year. Meanwhile, the average monthly wages for technical specialists who build the country's rockets and spacecraft range from $500 to $1,000 a month.

Necklaces and accessories claiming to "protect" people from 5G mobile networks have been found to be radioactive. The BBC reports: The Dutch authority for nuclear safety and radiation protection (ANVS) issued a warning about ten products it found gave off harmful ionizing radiation. It urged people not to use the products, which could cause harm with long-term wear. [...] The products identified included an "Energy Armor" sleeping mask, bracelet and necklace. A bracelet for children, branded Magnetix Wellness, was also found to be emitting radiation.

"Don't wear it any more, put it away safely and wait for the return instructions," the ANVS said in a statement. "The sellers in the Netherlands known to the ANVS have been told that the sale is prohibited and must be stopped immediately, and that they must inform their customers about this." The ANVS has published a full list of the products it identified as radioactive on its website. Further reading: Worried About 5G's Health Effects? Don't Be

Soccer games that make you sit on the edge of your seat may be a thing of the past, according to new scientific research. From a report: After analyzing 26 years worth of European soccer matches, in 11 major European soccer leagues, scientists have determined the games have become more predictable over time -- and the home field advantage has vanished. The work appears in the journal Royal Society Open Science. Taha Yasseri is a computational social scientist at University College Dublin and a soccer fan (though he'd say football). "I realized that I might be able to use network science and network analysis methods to make predictions about the results of football matches," Yasseri said. So, he built a computer model and analyzed nearly 88,000 European soccer matches. He found that stronger teams beat their weaker rivals more often as the years went by.

"Football is so exciting because, you know, there is always a possibility for the weaker teams to win. But, unfortunately, pouring money into the sport and not regulating the wealth or income of the clubs might take that away from the fans," Yasseri postulated. He found that financial inequality among teams also went up over time. He compares it to gentrification -- but in sports. Better teams win more games and rake in more riches. Then, they buy even better players and win more games. "As a football fan, that's really hard for me to take," Yasseri lamented.

There is at present "no evidence" that the Omicron coronavirus variant is any less severe than the Delta strain, according to early findings from researchers at Imperial College London, which also highlighted the elevated risk of reinfection posed by Omicron and the need for booster shots to combat it. From a report: The research, based on UK infection data, casts doubt on the hopes of some experts that a change in the virulence of the new variant would ease the pressure on health systems despite Omicron's high levels of infectiousness. "The study finds no evidence of Omicron having lower severity than Delta, judged by either the proportion of people testing positive who report symptoms, or by the proportion of cases seeking hospital care after infection," said the research team, led by Professor Neil Ferguson, an infectious disease modeller and government science adviser. However, they cautioned that hospitalisation data "remains very limited at this time." The study said data suggested "at most, limited changes in severity compared with Delta." Early reports from medics in South Africa's Gauteng province, the centre of the Omicron outbreak there, had raised hopes that the variant's mutations might have led to a change in the virus' biology causing it to be less severe.

The first ever millipede with more than 1,000 legs been discovered in Western Australia. From a report: The species, which is the first "true" millipede, has 1,306 legs and was found up to 60 metres underground in a mining area in the Eastern Goldfields region of WA. Researchers have named the new species Eumillipes persephone, in reference to the Greek goddess of the underworld, Persephone. It breaks the previous record set by Illacme plenipes, which is found in central California and has up to 750 legs.

A team of researchers discovered the millipede while conducting a subterranean environmental impact assessment. Dr Bruno Buzatto, a biologist at Bennelongia Environmental Consultants, described the find as "incredibly lucky." "These animals were so unique," Buzatto said. "As soon as I realised how long they were ... I realised they had to be something completely different." The species has a long, thread-like body comprising up to 330 segments, with short legs and a cone-shaped head. Like other animals that live in constant darkness, it is blind and pale.

An anonymous reader quotes a report from Reuters: A panel of outside advisers to the U.S. Centers for Disease Control and Prevention on Thursday voted to recommend Americans choose to receive one of the other two authorized COVID-19 vaccines over Johnson & Johnson's shot, due to rare but sometimes fatal cases of blood clotting. The CDC's Advisory Committee on Immunization voted unanimously to make the recommendation in favor of the vaccines made by Moderna and Pfizer/BioNTech over the J&J shot. The regulator still needs to sign off on the guidance.

Fewer Americans have received the J&J shot than the other two vaccines by a significant margin. Out of more than 200 million fully vaccinated people in the United States, around 16 million received J&J's vaccine, according to CDC data. [...] Members of the panel also said J&J's vaccine is less effective in preventing COVID-19 than the other two authorized vaccines. In a presentation to the committee, a leading J&J vaccine scientist said the vaccine generates a strong and long-lasting immune response with just a single shot.

An anonymous reader writes: Burning fossil fuels kills more than 1 million people ever year, according to a new study that examined the worldwide health effects of fine particulate pollution, also known as PM2.5. Coal, which produces sooty, particulate-laden pollution, is responsible for half of those deaths, while natural gas and oil are responsible for the other half. Some 80 percent of premature deaths due to fossil fuel combustion takes place in South Asia or East Asia, the report said. Because fine particulate pollution can be so easily inhaled and swept into the bloodstream, it is responsible for a range of diseases, including heart disease, diabetes, COPD, lung cancer, and stroke. More recently, researchers have found links between PM2.5 and other, less obvious diseases like kidney failure and Parkinson's. People who have experienced long-term exposure to PM2.5 are also at greater risk of hospitalization if they fall ill with COVID.

The researchers gathered monthly pollution and source data from 1970 to 2017 and ran it through a global air-quality model in conjunction with satellite data. The result was a global map of outdoor PM2.5 with a resolution of about 1 km^2. From there, they estimated the average outdoor exposure for people living in various parts of the world. The study was coordinated by the nonprofit Health Effects Institute, and its coauthors were Randall Martin, a professor of energy, environmental and chemical engineering at Washington University, and Michael Brauer, a professor of population and public health at the University of British Columbia. In regions like South Asia and East Asia and some Eastern and Central European countries, coal causes a majority of the premature deaths that result from fossil fuel combustion. That's due in part to those regions' reliance on coal and because their regulations are typically not as stringent as elsewhere. In regions like North America and Western Europe, which are less reliant on coal, oil and natural gas cause the majority of deaths from fossil fuel-related particulate pollution. Even in the US, a country with relatively stringent clean air laws, fine particulate pollution from fossil fuels is responsible for about 20,000 deaths annually, according to the study.

How many red and blue beads can you string together without making a big evenly spaced sequence of the same color? Using a semi-structured pattern of squashed circles, a mathematician shattered the previous record for how long you can keep stringing beads. From a report: The mathematician Ben Green of the University of Oxford has made a major stride toward understanding a nearly 100-year-old combinatorics problem, showing that a well-known recent conjecture is "not only wrong but spectacularly wrong," as Andrew Granville of the University of Montreal put it. The new paper shows how to create much longer disordered strings of colored beads than mathematicians had thought possible, extending a line of work from the 1940s that has found applications in many areas of computer science. The conjecture, formulated about 17 years ago by Ron Graham, one of the leading discrete mathematicians of the past half-century, concerns how many red and blue beads you can string together without creating any long sequences of evenly spaced beads of a single color. (You get to decide what "long" means for each color.) This problem is one of the oldest in Ramsey theory, which asks how large various mathematical objects can grow before pockets of order must emerge. The bead-stringing question is easy to state but deceptively difficult: For long strings there are just too many bead arrangements to try one by one.

Scientists have discovered a world-historic discovery on Mars: "significant amounts of water" are hiding inside the Red Planet's Valles Marineris, its version of our grand canyon system, according to a recent press release from the European Space Agency (ESA). And up to 40% of material near the surface of the canyon could be water molecules. Interesting Engineering reports: The newly discovered volume of water is hiding under the surface of Mars, and was detected by the Trace Gas Orbiter, a mission in its first stage under the guidance of the ESA-Roscosmos project dubbed ExoMars. Signs of water were picked up by the orbiter's Fine Resolution Epithermal Neutron Detector (FREND) instrument, which is designed to survey the Red Planet's landscape and map the presence and concentration of hydrogen hiding in Mars' soil. It works like this: while high-energy cosmic rays plunge into the surface, the soil emits neutrons. And wet soil emits fewer neutrons than dry soil, which enables scientists to analyze and assess the water content of soil, hidden beneath its ancient surface. "FREND revealed an area with an unusually large amount of hydrogen in the colossal Valles Marineris canyon system: assuming the hydrogen we see is bound into water molecules, as much as 40% of the near-surface material in this region appears to be water," said Igor Mitrofanov, the Russian Academy of Science's lead investigator of the Space Research Institute, in the ESA press release.

"The reservoir is large, not too deep below ground, & could be easily exploitable for future explorers," read a tweet on the announcement from ExoMars. That sounds basically great! But it's too soon for Musk to pack up his bags and fly to the site, since much work is left to be done. A study accompanying the announcement, published in the journal Icarus, shows that neutron detection doesn't distinguish between ice and water molecules. This means geochemists need to enter the scientific fray to reveal more details. But several features of the canyon, including its topology, have led the researchers to speculate that the water is probably in solid form (ice). But it could also be a mixture of solid and liquid.

"We found a central part of Valles Marineris to be packed full of water -- far more water than we expected," said Alexey Malakhov, co-author of the study, in the ESA release. "This is very much like Earth's permafrost regions, where water ice permanently persists under dry soil because of the constant low temperatures." So while we don't yet know the specific form of water is lying under Mars' vast system of canyons, the first human mission to Mars may consider exploring this area a major priority.

The U.K. reported a record number of new daily Covid-19 cases on Wednesday, with 78,610 in the last 24 hours. From a report: The figure was an increase from 59,610 the day before, and it surpasses the previous high of 68,053 cases reported on Jan. 8. It underlines the dramatic surge in infections that the country is seeing ahead of the Christmas holiday period with the omicron variant expected to quickly become the dominant strain. One senior British health chief has warned that there could be "staggering" numbers in the next few days. Long queues have been seen outside vaccination centers in many U.K. cities and towns with the government putting its booster program on overdrive to try to get a third vaccine shot to as many people as possible. There were 165 new Covid deaths in the U.K. on Wednesday, according to government data. While deaths remain low currently and initial reports suggest that the omicron variant might not be any more severe than other Covid strains, health experts have repeatedly warned that the sheer number of infections could lead to mounting fatalities and an overwhelmed health-care system.

Sixty years after NASA set the goal, and three years after its Parker Solar Probe launched, the spacecraft has become the first to "touch the sun." CNN World reports: The Parker Solar Probe has successfully flown through the sun's corona, or upper atmosphere, to sample particles and our star's magnetic fields. The announcement was made at the 2021 American Geophysical Union Fall Meeting in New Orleans on Tuesday, and research from the solar milestone has been published in the Physical Review Letters.

The Parker Solar Probe launched in 2018 and set out to circle closer and closer to the sun. Scientists, including the spacecraft's namesake astrophysicist Eugene Parker, want to answer fundamental questions about the solar wind that streams out from the sun, flinging energetic particles across the solar system. The sun's corona is much hotter than the actual surface of the star, and the spacecraft could provide insight about why. The corona is one million degrees Kelvin (1,800,000 degrees Fahrenheit) at its hottest point, while the surface is around 6,000 Kelvin (10,340 degrees Fahrenheit).

The spacecraft has already revealed surprising finds about the sun, including the 2019 discovery of magnetic zig-zag structures in the solar wind called switchbacks. Now, thanks to Parker's latest close approach to the sun, the spacecraft helped scientists determine that these switchbacks originate from the solar surface. Before Parker Solar Probe's mission is done, it will have made 21 close approaches to the sun over the course of seven years. The probe will orbit within 3.9 million miles of the sun's surface in 2024, closer to the star than Mercury -- the closest planet to the sun.

An anonymous reader quotes a report from Phys.Org: The United States should immediately move to create a collection of strategic forest reserves in the Western U.S. to fight climate change and safeguard biodiversity, according to a scientific collaboration led by an Oregon State University ecologist. Bev Law, her College of Forestry colleague William Ripple and other scientists from around the West argue that climate change and biodiversity are inextricably linked and that strategic forest reserves would tackle both "emergencies" while also promoting the protection of water resources.

Describing the U.S.'s natural wooded systems as "America's Amazon" and forest protection as "the lowest-cost climate mitigation option," the researchers emphasize older forests' ability to accumulate massive amounts of carbon in trees, vegetation and soils, to provide homes for wildlife and to serve as sources of water for drinking and other uses. The scientists note that multiple nations have pledged to meet goals commonly known as 30x30 and 50x50; the former calls for protecting 30% of land and water areas globally by 2030, the latter 50% by 2050. Hitting the 50x50 target is widely viewed as necessary for ensuring the Earth's biodiversity, the researchers say. [...] The scientists note that multiple nations have pledged to meet goals commonly known as 30x30 and 50x50; the former calls for protecting 30% of land and water areas globally by 2030, the latter 50% by 2050. Hitting the 50x50 target is widely viewed as necessary for ensuring the Earth's biodiversity, the researchers say.

The framework produces preservation priority rankings by using spatial metrics of biodiversity, carbon stocks and accumulation under climate change and future vulnerability to drought or wildfire. In the West the highest priority forestlands are mainly under federal ownership, with substantial areas controlled by private entities and state and tribal governments. Many federal forest lands would reach GAP 2 protection simply by phasing out grazing, mining and logging and strengthening protection via administrative rule. Inventoried roadless areas make up almost 42 million acres of national forest in the West and are readily available for permanent protection. The researchers lay out their framework for developing the reserves in a paper published in the journal Communications Earth & Environment.

"GAP 1, as defined by the U.S. Geological Survey, refers to permanent protection such as wilderness areas and national parks, where natural disturbances such as fire can proceed without interference or are mimicked via management activities," notes Phys.Org. "On GAP 2 lands, uses or practices that degrade the quality of existing natural communities, such as road building, may be allowed, and suppression of natural disturbances is allowed as well."

Microbes in oceans and soils across the globe are evolving to eat plastic, according to a study. The research scanned more than 200m genes found in DNA samples taken from the environment and found 30,000 different enzymes that could degrade 10 different types of plastic. From a report: The study is the first large-scale global assessment of the plastic-degrading potential of bacteria and found that one in four of the organisms analysed carried a suitable enzyme. The researchers found that the number and type of enzymes they discovered matched the amount and type of plastic pollution in different locations. The results "provide evidence of a measurable effect of plastic pollution on the global microbial ecology," the scientists said.

Millions of tonnes of plastic are dumped in the environment every year, and the pollution now pervades the planet, from the summit of Mount Everest to the deepest oceans. Reducing the amount of plastic used is vital, as is the proper collection and treatment of waste. But many plastics are currently hard to degrade and recycle. Using enzymes to rapidly break down plastics into their building blocks would enable new products to be made from old ones, cutting the need for virgin plastic production. The new research provides many new enzymes to be investigated and adapted for industrial use.

NASA is constantly tracking potentially dangerous asteroids in Earth's vicinity, and now a new tool allows anyone to explore their paths through the solar system. From a report: There are about 28,000 near-Earth asteroids and comets tracked by astronomers to make sure they don't pose a risk to our planet. The interactive tool allows anyone using it to zoom in on specific asteroids of interest in order to learn more about the objects and their orbits. Another feature of the tool allows users to see the next five close approaches of asteroids to Earth. "We were keen to include this feature, as asteroid close approaches often generate a lot of interest," Jason Craig, one of the developers of the tool, said in a statement. "The headlines often depict these close approaches as 'dangerously' close, but users will see by using Eyes just how distant most of these encounters really are."

fahrbot-bot shares a report from Engadget: Becoming an astronaut requires perfect 20/20 vision, but unfortunately, the effects of space can cause astronauts to return to Earth with degraded eyesight. Now, researchers from UT Southwestern Medical Center have developed a sleeping bag that that could prevent or reduce those problems by effectively sucking fluid out of astronauts' heads. More than half of NASA astronauts that went to the International Space Station (ISS) for more than six months have developed vision problems to varying degrees. In one case, astronaut John Philips returned from a six month stint about the ISS in 2005 with his vision reduced from 20/20 to 20/100, as the BBC reported.

Fluids tend to accumulate in the head when you sleep, but on Earth, gravity pulls them back down into the body when you get up. In the low gravity of space, though, more than a half gallon of fluid collects in the head. That in turn applies pressure to the eyeball, causing flattening that can lead to vision impairment -- a disorder called spaceflight-associated neuro-ocular syndrome, or SANS. To combat SANS, researchers collaborated with outdoor gear manufacturer REI to develop a sleeping bag that fits around the waist, enclosing the lower body. A vacuum cleaner-like suction device is then activated that draws fluid toward the feet, preventing it from accumulating in the head. Around a dozen people volunteered to test the technology, and the results were positive.

Thelasko shares a report from the BBC: At least one person in the UK has died with the Omicron coronavirus variant, the prime minister has said. Boris Johnson said the new variant was also resulting in hospital admissions, and the "best thing" people could do was get their booster jab. Health Secretary Sajid Javid told MPs Omicron now represented 20% of cases in England. The PM has set a new target for all adults in England to be offered a booster by the end of the month. Mr Johnson said on Monday that people needed to recognize "the sheer pace at which [Omicron] accelerates through the population" and that they should set aside the idea that Omicron was a milder variant.

The UK recorded 54,661 new coronavirus cases on Monday, as well as 38 deaths within 28 days of a positive test. There are 4,713 confirmed cases of the Omicron variant but Mr Javid said the UK Health Security Agency (UKHSA) estimated the current number of daily infections was around 200,000. Omicron has risen to more than 44% of cases in London and is expected to become the dominant variant in the city in the next 48 hours, he said.

An anonymous reader shares an excerpt from a report by Gizmodo, written by Isaac Schultz: The Dark Matter Radio project is attempting to detect hidden photons in a specific frequency range by methodically turning the dial, in what amounts to a patient, sweeping search of the wavelengths where such a particle could sound off. Later generations of the radio will hunt axions. [...] The current Dark Matter Radio experiment is the prototype, or Pathfinder, for larger projects down the line. It consists of a liter-volume cylinder made of superconducting niobium metal, around which is tightly wound niobium wire. It looks a bit like someone wound guitar string on a spool's vertical axis instead of its horizontal axis. That's the Pathfinder's inductor. If a hidden photon resonating at the frequency the Pathfinder was tuned to passed through it, the change in magnetic field would induce a voltage around the contraption's inductor. "The null hypothesis is that there shouldn't be any radio waves inside of that box unless, in this case, hidden photons, which are our particular flavor of dark matter," said Stephen Kuenstner, a physicist at Stanford University and a member of the DM Radio team. Hidden photons "can pass through the box and they have some probability of interacting with the circuit in the same way that a radio wave would," Kuenstner said.

To amplify any signal the Pathfinder picks up, there's a hexagonal shield of niobium plates sheathing the aforesaid components that acts as a capacitor. That amplified signal is then transported to a quantum sensor called a SQUID (a Superconducting QUantum Interference Device), a technology invented by the Ford Motor Company in the 1960s. The SQUID lives on the bottom of the radio and measures and records any signals picked up. The smaller the expected mass for the axion becomes, the more elusive the particle is, as its interactions with ordinary matter are proportional to its mass. So it's important that the next generation of DM Radio becomes more sensitive. The way the experiment is set up, "the frequency on the dial is the mass of the axion," [said Kent Irwin, a physicist at Stanford University and SLAC and the principal investigator of Dark Matter Radio]. Convenient! The mass of these particles doesn't even compare to the smallest things you might think of, like atoms or quarks. These particles would be somewhere between a trillionth and a millionth of an electronvolt, and an electronvolt is about a billionth of a proton's mass.

The helium Pathfinder uses is gaseous, and remains a relatively warm 4 kelvin (in other words, four degrees above absolute zero), but the next experiment -- Dark Matter Radio 50L -- will use liquified helium, cooled to less than one degree above absolute zero. All the better for hearing dark matter with. DM Radio 50L sits in the corner of a large room in the Hansen Experimental Physics Lab at Stanford. The room looks a little bit like the TV room in Willy Wonka's factory; it has high ceilings, lots of inscrutable equipment, and is glaringly white. Two 6-foot-tall dilution refrigerators on one side, abutting a deep closet, are the radio. The two machines are fed gaseous helium sitting in tanks in the next room, which they then cool down into liquid helium of a frigid 2 kelvin. Magnets inside gold-plated copper and aluminum sheathes will do the job of converting any detected axions into radio waves for physicists to interpret. "The particle physics community is -- the analogy is often said -- just like a battleship. It takes a while to turn and it has a lot of momentum," Irwin said. "So even though I think that there's a lot of reasons to believe that these radio-like dark matter signals are more attractive -- the axionic signals -- than [Weakly Interactinv Massive Particles (WIMPs)], there's still a lot of giant experiments searching for little things, which is good." The team behind the Dark Matter Radio is "currently working with the Department of Energy on a next-next-generation experiment that will look for axions in a cubic meter, hence its name of DM Radio-m3," adds Gizmodo. "In the more distant future, Irwin and his team have aspirations for a project called DM Radio-GUT, which would be closer to the scale of some of the largest physics experiments on the planet."

"All told, Irwin said, the favored area for axion mass could be searched in the next couple of decades using larger experiments -- though the team could simply find an axion before then, potentially ending the hunt for dark matter in its entirety. With enough listening, we might have an entirely new particle for the textbooks. Or maybe there'll be radio silence."