There's something mysterious coming up from the frozen ground in Antarctica, and it could break physics as we know it. From a report: Physicists don't know what it is exactly. But they do know it's some sort of cosmic ray -- a high-energy particle that's blasted its way through space, into the Earth, and back out again. But the particles physicists know about -- the collection of particles that make up what scientists call the Standard Model (SM) of particle physics -- shouldn't be able to do that.

Sure, there are low-energy neutrinos that can pierce through miles upon miles of rock unaffected. But high-energy neutrinos, as well as other high-energy particles, have "large cross-sections." That means that they'll almost always crash into something soon after zipping into the Earth and never make it out the other side. And yet, since March 2016, researchers have been puzzling over two events in Antarctica where cosmic rays did burst out from the Earth, and were detected by NASA's Antarctic Impulsive Transient Antenna (ANITA) -- a balloon-borne antenna drifting over the southern continent.

ANITA is designed to hunt cosmic rays from outer space, so the high-energy neutrino community was buzzing with excitement when the instrument detected particles that seemed to be blasting up from Earth instead of zooming down from space. Because cosmic rays shouldn't do that, scientists began to wonder whether these mysterious beams are made of particles never seen before. Since then, physicists have proposed all sorts of explanations for these "upward going" cosmic rays, from sterile neutrinos (neutrinos that rarely ever bang into matter) to "atypical dark matter distributions inside the Earth," referencing the mysterious form of matter that doesn't interact with light.

Last month, deep in a 500-page environmental impact statement, the Trump administration made a startling assumption: On its current course, the planet will warm a disastrous 7 degrees by the end of this century. From a report: A rise of 7 degrees Fahrenheit, or about 4 degrees Celsius, compared with preindustrial levels would be catastrophic, according to scientists. Many coral reefs would dissolve in increasingly acidic oceans. Parts of Manhattan and Miami would be underwater without costly coastal defenses. Extreme heat waves would routinely smother large parts of the globe. But the administration did not offer this dire forecast as part of an argument to combat climate change. Just the opposite: The analysis assumes the planet's fate is already sealed. The draft statement, issued by the National Highway Traffic Safety Administration (NHTSA), was written to justify President Trump's decision to freeze federal fuel efficiency standards for cars and light trucks built after 2020. While the proposal would increase greenhouse gas emissions, the impact statement says, that policy would add just a very small drop to a very big, hot bucket.

An anonymous reader shares a report: The problem of energy storage has led to many creative solutions, like giant batteries. For a paper published today in the journal Chem, scientists trying to improve the solar cells themselves developed an integrated battery that works in three different ways. It can work like a normal solar cell by converting sunlight to electricity immediately, explains study author Song Jin, a chemist at the University of Wisconsin at Madison. It can store the solar energy, or it can simply be charged like a normal battery. It's a combination of two existing technologies: solar cells that harvest light, and a so-called flow battery. The most commonly used batteries, lithium-ion, store energy in solid materials, like various metals. Flow batteries, on the other hand, store energy in external liquid tanks. This means they are very easy to scale for large projects. Scaling up all the components of a lithium-ion battery might throw off the engineering, but for flow batteries, "you just make the tank bigger," says Timothy Cook, a University at Buffalo chemist and flow battery expert not involved in the study. "You really simplify how to make the battery grow in capacity," he adds. "We're not making flow batteries to power a cell phone, we're thinking about buildings or industrial sites.

An anonymous reader quotes a report from Motherboard: Earlier this year, researchers at the University of Tokyo accidentally created the strongest controllable magnetic field in history and blew the doors of their lab in the process. As detailed in a paper recently published in the Review of Scientific Instruments, the researchers produced the magnetic field to test the material properties of a new generator system. They were expecting to reach peak magnetic field intensities of around 700 Teslas, but the machine instead produced a peak of 1,200 Teslas. (For the sake of comparison, a refrigerator magnet has about 0.01 Tesla)

In both the Japanese and Russian experiments, the magnetic fields were generated using a technique called electromagnetic flux-compression. This technique causes a brief spike in the strength of the magnetic field by rapidly "squeezing" it to a smaller size. [...] Instead of using TNT to generate their magnetic field, the Japanese researchers dumped a massive amount of energy -- 3.2 megajoules -- into the generator to cause a weak magnetic field produced by a small coil to rapidly compress at a speed of about 20,000 miles per hour. This involves feeding 4 million amps of current through the generator, which is several thousand times more than a lightning bolt. When this coil is compressed as small as it will go, it bounces back. This produces a powerful shockwave that destroyed the coil and much of the generator. To protect themselves from the shockwave, the Japanese researchers built an iron cage for the generator. However they only built it to withstand about 700 Teslas, so the shockwave from the 1,200 Teslas ended up blowing out the door to the enclosure. While this is the strongest magnetic filed ever generated in a controlled, indoor environment, the strongest magnetic field produced in history belongs to some Russian researchers who created a 2,800 Tesla magnetic field in 2001.

Iridium Communications is partnering with Amazon Web Services to develop a satellite-based network called CloudConnect for Internet of Things (IoT) applications. "We're really covering the whole planet [...] with terrestrial networks today it's still only 10 percent or 20 percent" of the Earth, Iridium CEO Matt Desch told CNBC. "Everybody today can connect pretty easily with very little effort. Now that Amazon has put our language into the cloud platform, they can extend their applications to the satellite realm." From the report: CloudConnect, which the company expects to launch in 2019, makes Iridium "the first, and only, satellite provider now connected to" Amazon Web Services, Desch said. The CloudConnect network will focus on "where cellular technologies aren't," Desch said, bringing the rest of the world within reach of AWS. The company is nearly finished putting its Iridium NEXT constellation of 75 satellites into orbit. SpaceX is launching the $3 billion satellite network for Iridium, with the eighth and final launch happening later this year.

Once online, Iridium NEXT will offer services such as higher broadband communications speeds and global airplane tracking. Iridium describes the IoT aspect of the network as a "catalyst for strong subscriber growth." Desch said the network hosts "about half a million" active devices, growing at a rate of about 20 percent per year for the last three years. With AWS onboard, Desch gave a very bullish estimates for his IoT services: "Easily this could expand to tens of millions of devices."

An anonymous reader quotes a report from Gizmodo: A revved-up version of traditional CT scanning shows it's possible to acquire microscopic-scale images of ancient Egyptian mummies, revealing previously unseen features such as blood vessels and nerves. A new proof-of-concept study published this week in Radiology shows a modified version of CT scanning, called phase-contrast CT scanning, can be used to do microscopic-scale imaging of soft-tissue in human mummies. This imaging technique detects the absorption and phase shift (similar to how light changes direction when it passes through a lens) that happens when x-rays pass through a solid object. The resulting images feature a higher level of contrast than traditional x-ray images.

For the new study, Jenny Romell and her colleagues at the KTH Royal Institute of Technology in Sweden wanted to evaluate the effectiveness of using phase-contrast CT scanning on mummies. The researchers scanned a mummified human right hand from ancient Egypt. The hand was lent to them by the Museum of Mediterranean and Near Eastern Antiquities, and it dates back to around 400 BC. Rommel's team scanned the entire hand, followed by more detailed imaging of a finger tip. The system worked beautifully. The resolution got as good as an estimated 6 to 9 microns, which is slightly more than the width of a human blood cell. At such a small scale, the researchers could visualize the mummy's blood vessels, different layers of skin growth, adipose cells, blood vessels, and nerves. For archaeologists, this now introduces a new way of imaging ancient remains in an unobtrusive and highly detailed way.

The moon has not superseded Mars as a human-spaceflight target, despite NASA's current focus on getting astronauts to Earth's nearest neighbor, agency officials stressed. From a report: The Red Planet remains the ultimate destination, and the moon will serve as a stepping stone along the way, Jim Bridenstine, NASA administrator, and Bill Gerstenmaier, associate administrator of NASA's Human Exploration and Operations Mission Directorate, said during congressional hearings Wednesday. "The moon is the proving ground, and Mars is the goal," Bridenstine said during testimony before the Subcommittee on Space, Science and Competitiveness, part of the U.S. Senate's Committee on Commerce, Science and Transportation. "The glory of the moon is that it's only a three-day journey home," Bridenstine added. "So, we can prove all of the technologies, we can reduce all of the risks, we can try all of the different maturations that are necessary to live and work on another world. And we can do it all at the moon, where, if there is a problem, if there is an emergency, we know that we can get people home." He cited NASA's Apollo 13 mission in 1970, which famously managed to make it safely back to Earth despite experiencing a serious problem on the way to the moon.

Parents who possess the resolve to separate their children from their smartphones may be helping their kids' brainpower, a new study suggests. A report adds: Children who use smartphones and other devices in their free time for fewer than two hours a day performed better on cognitive tests assessing their thinking, language, and memory, according to a study published this week in the Lancet Child & Adolescent Health. The study assessed the behavior of 4,500 children, ages 8 to 11, by looking at their sleep schedules, how much time they spent on screens and their amount of exercise, and analyzed how those factors impacted the children's mental abilities. The researchers compared the results with national guidelines for children's health. The guidelines recommend that children in that age group, get at least an hour of physical activity, no more than two hours of recreational screen time and nine to 11 hours of sleep per night. The researchers found that only 5 percent of children met all three recommendations. Sixty-three percent of children spent more than two hours a day staring at screens, failing to meet the screen-time limit.

After more than a century of slicing tiny, inflamed organs from people's guts, doctors have found that surgery may not be necessary after all -- a simple course of antibiotics can be just as effective at treating appendicitis as going under the knife. From a report: The revelation comes from a large, randomized trial out of Finland, published Tuesday, September 25, in JAMA. Despite upending a long-held standard of care, the study's finding is not entirely surprising; it follows several other randomized trials over the years that had carved out evidence that antibiotics alone can treat an acute appendicitis. Those studies, however, left some dangling questions, including if the antibiotics just improved the situation temporarily and if initial drug treatments left patients worse off later if they did need surgery. The new JAMA study, with its full, five-year follow-up, effectively cauterised those remaining issues. Nearly two-thirds of the patients randomly assigned in the study to get antibiotics for an uncomplicated appendicitis didn't end up needing surgery in the follow-up time, the Finnish authors, based at the University of Turku, report. And those drug-treated patients that did end up getting an appendectomy later were not worse off for the delay in surgery. "This long-term follow-up supports the feasibility of antibiotic treatment alone as an alternative to surgery for uncomplicated acute appendicitis," the authors conclude. The finding suggests that many appendicitis patients could be spared the risks of surgical procedures, such as infections.

An anonymous reader quotes a report from Phys.Org: Rice University scientists have developed micron-sized calcium silicate spheres that could lead to stronger and greener concrete, the world's most-used synthetic material. The researchers formed the spheres in a solution around nanoscale seeds of a common detergent-like surfactant. The spheres can be prompted to self-assemble into solids that are stronger, harder, more elastic and more durable than ubiquitous Portland cement. He said the spheres are suitable for bone-tissue engineering, insulation, ceramic and composite applications as well as cement. The research appears in the American Chemical Society journal Langmuir.

In tests, the researchers used two common surfactants to make spheres and compressed their products into pellets for testing. They learned that DTAB-based pellets compacted best and were tougher, with a higher elastic modulus, than either CTAB pellets or common cement. They also showed high electrical resistance. [Rice materials scientist Rouzbeh Shahsavari] said the size and shape of particles in general have a significant effect on the mechanical properties and durability of bulk materials like concrete. He said increasing the strength of cement allows manufacturers to use less concrete, decreasing not only weight but also the energy required to make it and the carbon emissions associated with cement's manufacture. Because spheres pack more efficiently than the ragged particles found in common cement, the resulting material will be more resistant to damaging ions from water and other contaminants and should require less maintenance and less-frequent replacement.

"On Wednesday, a Japanese company called ispace announced that it has two missions planned to the Moon within the next three years and that it has acquired ride-share launches on two Falcon 9 rockets to carry out those flights," reports Ars Technica. "The company's founder, Takeshi Hakamada, also said he has a long-term vision to have a city on the Moon visited by 10,000 people a year by 2040." From the report: The two missions ispace announced Wednesday are an orbiter launch in mid-2020 and a more complicated lander-and-rover mission a year later. Both will be secondary payloads on Falcon 9 rocket launches, being released by the rocket's second stage in geostationary transfer orbit. From there, they will proceed to the Moon under their own propulsive power.

During a teleconference with several reporters, Hakamada said the company hopes to demonstrate to potential customers the initial capability to deliver 30kg of payload to the lunar surface. But he also has longer-term plans that will allow it to serve customers seeking to reach the lunar surface with larger payloads. Plus, the company is developing the capability to mine ice from the lunar poles to convert the hydrogen and oxygen into rocket fuel. "Around 2030 we expect to begin developing propellant and sending it to spacecraft in space," Hakamada said. He hopes that by then, there will be several hundred people working on the Moon, or in lunar orbit, to support an industrial base. A decade later, by 2040, he envisions a city called "Moon Valley" on the lunar surface, with a diverse array of industries and thousands of visitors per year. "We believe we can establish such a world if we can actively develop our capability in the current speed," Hakamada said.

A study of school grades of more than 1.6 million students shows that girls and boys perform similarly in science, technology, engineering and math (STEM) subjects. From a report: The research, published today in Nature Communications, also shows that girls do better than boys in non-STEM subjects. Our results provide evidence that large gaps in the representation of women in STEM careers later in life are not due to differences in academic performance. One explanation for gender imbalance in STEM is the "variability hypothesis." This is the idea that gender gaps are much larger at the tails of the distribution -- among the highest and lowest performers -- than in the middle.

An anonymous reader quotes a report from NPR: A new study [published in the Proceedings of the National Academy of Sciences] by scientists at the University of Texas at Austin posit that glyphosate -- the active ingredient in the herbicide -- destroys specialized gut bacteria in bees, leaving them more susceptible to infection and death from harmful bacteria. Researchers Nancy Moran, Erick Motta and Kasie Raymann suggest their findings are evidence that glyphosate might be contributing to colony collapse disorder, a phenomenon that has been wreaking havoc on honey bees and native bees for more than a decade. They hope their results will convince farmers, landscapers and homeowners to stop spraying glyphosate-based herbicides on flowering plants that are likely to be pollinated by bees.

"No large-scale study has ever found a link between glyphosate and honey bee health issues," Bayer said in a statement, adding that the new study "does not change that." Bayer noted the study relied on a small sample of individual bees and that it does not meet regulatory research criteria on pesticides stipulated by international guidelines developed by the Organization of Economic Cooperation and Development and other international organizations. Additionally, the company suggested it is "questionable whether the concentrations of the substance tested could at all be absorbed by bee populations in the open over a relevant period of time." According to the report in the journal, the researchers focused on honey bees and used "hundreds of adult worker bees from a single hive" and treated them with varying levels of glyphosate. Editor's note: In June, Germany's pharmaceutical giant Bayer purchased Monsanto, the company that developed Roundup.

A reader shares a report from BGR: When looking at the Earth from afar it appears to be a perfect sphere, but that actually isn't the case. Because Earth isn't uniform on all sides due to land masses that shift and change over time, our planet actually wobbles a bit when it spins. Now, a new study by researchers with NASA's Jet Propulsion Laboratory and several universities and science centers has pinpointed the causes of Earth's imperfect spin, called "polar motion," and they found that humans are contributing to it. The researchers used a wealth of data gathered over 100 years to build mathematical models to trace the causes of the wobble and found that three factors are at play, and mankind is responsible for one of them. Two of the three factors identified by the scientists are glacial rebound and mantle convection. Glacial rebound happens when thick ice sheets physically push down on land masses, compressing them, but then release that pressure upon melting. The land then balloons back up over time, causing Earth's spin to wobble as if slightly off-axis. The effects of the last ice age, which would have compressed a huge amount of land across many continents, is still being felt today in the form of glacial rebound.

Mantle convection, the other uncontrollable factor in Earth's wobble, relates to our planet's inner workings. The plates on Earth's surface are in constant flux due to the movement of liquid rock far beneath our feet. The researchers believe these currents also contribute to the planet's imperfect spin. The third and final factor identified by the scientists is the massive loss of ice on Greenland and other areas, which is the direct result of global warming thanks to human activities. The researchers estimate that Greenland has lost roughly 7,500 gigatons, or 7,500,000,000,000 metric tons of ice due to global warming. All that ice loss has happened in the 20th century, and greenhouse gas production has been cited as the primary culprit. Losing all that mass has caused a significant shift on the planet and has contributed to the wobble as well.

An anonymous reader shares a report: Set against the austere peaks of the Western Brooks Range, the lake, about 20 football fields in size, looked like it was boiling. Its waters hissed, bubbled and popped as a powerful greenhouse gas escaped from the lake bed. Some bubbles grew as big as grapefruits, visibly lifting the water's surface several inches and carrying up bits of mud from below. This was methane. As the permafrost thaws across the fast-warming Arctic, it releases carbon dioxide, the top planet-warming greenhouse gas, from the soil into the air. Sometimes, that thaw spurs the growth of lakes in the soft, sunken ground, and these deep-thawing bodies of water tend to unleash the harder-hitting methane gas. But not this much of it. This lake, which Katey Walter Anthony, an ecologist who has studied 300 lakes across the tundras of the Arctic, dubbed Esieh Lake, looked different. And the volume of gas wafting from it could deliver the climate system another blow if lakes like this turn out to be widespread.

The first time Walter Anthony saw Esieh Lake, she was afraid it might explode -- and she is no stranger to the danger, or the theatrics, of methane. In 2010, the University of Alaska at Fairbanks posted a video of the media-savvy ecologist standing on the frozen surface of an Arctic lake, then lighting a methane stream on fire to create a tower of flame as tall as she is. It got nearly half a million views on YouTube. So now, in the Arctic's August warmth, she had come back to this isolated spot with a small research team, along with her husband and two young sons, to see what secrets Esieh Lake might yield. Was it simply a bizarre anomaly? Or was it a sign that the thawing Arctic had begun to release an ancient source of methane that could worsen climate change? One thing she was sure of: If the warming Arctic releases more planet-warming methane, that could lead to... more warming. Scientists call this a feedback loop.

A new study has revealed a "fast-acting neural circuit allowing gut cells to communicate with the brain in just seconds," reports New Atlas. Diego Bohorquez, senior author of the study, says "these findings are going to be the biological basis of a new sense. One that serves as the entry point for how the brain knows when the stomach is full of food and calories." He says it "brings legitimacy to [the] idea of the 'gut feeling' as a sixth sense." The study has been published in the journal Science. From the report: Remarkable new work from a team of researchers at Duke University has now revealed a previously unknown direct circuit between the gut and the brain that could allow for fast sensory communication that doesn't relay on laborious hormonal signaling. The research began with a big discovery in 2015 revealing that enteroendocrine cells, the cells in our gut thought to be the primary sensory receptor that communicate with the brain, actually contained nerve endings that seemed like they could directly synaptically communicate with vagal neurons and subsequently, the brain.

The new study first revealed that direct, and near instant, communication occurred between the gut and brain. A mouse was administered with a rabies virus that had been engineered with a green fluorescent tag. Tracing the signal of communication as the gut informed the brain of this virus revealed an immediate response in the vagus nerve. In under 100 milliseconds a single signal was seen to travel from the gut to the brainstem. In order to understand this new neural circuit, the team grew enteroendocrine cells in a lab dish alongside vagal nerve neurons. Not only did these two elements rapidly demonstrate communication, but it was discovered that glutamate, a foundational neurotransmitter, modulated the rate of transmission. What this experiment impressively revealed was that enteroendocrine cells don't solely signal to the brain via hormonal triggers, but also can directly communicate via neural synapses.

An anonymous reader quotes a report from NPR: For the first time, scientists have demonstrated that a controversial new kind of genetic engineering can rapidly spread a self-destructive genetic modification through a complex species. The scientists used the revolutionary gene-editing tool known as CRISPR to engineer mosquitoes with a "gene drive," which rapidly transmitted a sterilizing mutation through other members of the mosquito's species. After mosquitoes carrying the mutation were released into cages filled with unmodified mosquitoes in a high-security basement laboratory in London, virtually all of the insects were wiped out, according to a report in Nature Biotechnology. The mosquitoes were created in the hopes of using them as a potent new weapon in the long, frustrating fight against malaria. Malaria remains one of the world's deadliest diseases, killing more than 400,000 people every year, mostly children younger than 5 years old. What's encouraging is that the mosquitos reportedly did not appear to further mutate in a way that would diminish the effectiveness of the engineered mutation. "But the researchers stressed that many years of additional research are needed to further test the safety and effectiveness of the approach before anyone attempts to release these mosquitos or any other organisms created this way into the wild," reports NPR.

An anonymous reader quotes a report from NBC News: At least five people whose legs were completely paralyzed are walking again, two of them with no outside help, thanks to a specialized program of therapy and a pain stimulator implanted in their spines, researchers reported Monday. It's the latest and most dramatic advance in a new approach to treating spinal cord injuries developed at the University of Louisville in Kentucky. The reports show that electrical stimulation of the spine, when combined with a very intense and specialized training program, can re-educate the body and help move the legs even though signals from the brain are cut off.

The stimulator is implanted into the epidural layer surrounding the spinal cord, and sends controlled signals into the bundle of nerve tissue. The team also employs intense training techniques to try to get the body to make sense of the signals. "There were three types of training sessions: stepping on a treadmill, over-ground standing, and over-ground walking, with each type of session performed daily," the team wrote in their report, published in the New England Journal of Medicine. Two still need support and help from human trainers, but Marquis and another patient, 23-year-old Kelly Thomas of Citrus County, Florida, can walk alone using a walker or a cane. A second team at the Mayo Clinic reports somewhat similar results using the Louisville approach. In their study, published Monday in Nature Medicine, they report on one of two patients they have treated, who can walk with the assistance of physical trainers.

An anonymous reader quotes a report from The Guardian: Alcohol is responsible for more than 5% of all deaths worldwide, or around 3 million a year, new figures have revealed. The data, part of a report from the World Health Organization, shows that about 2.3 million of those deaths in 2016 were of men, and that almost 29% of all alcohol-caused deaths were down to injuries -- including traffic accidents and suicide. The report, which comes out every four years, reveals the continued impact of alcohol on public health around the world, and highlights that the young bear the brunt: 13.5% of deaths among people in their 20s are linked to booze, with alcohol responsible for 7.2% of premature deaths overall. It also stresses that harm from drinking is greater among poorer consumers than wealthier ones. While the proportion of deaths worldwide that have been linked to alcohol has fallen to 5.3% since 2012, when the figure was at 5.9%, experts say the findings make for sobering reading.

Slashdot reader OneHundredAndTen writes: Sir Michael Atiyah claims to have proved the Riemann hypothesis. This is not some internet crank, but one the towering figures of mathematics in the second half of the 20th century. The thing is, he's almost 90 years old. According to New Scientist, Atiyah is set to present his "simple proof" of the Riemann hypothesis on Monday at the Heidelberg Laureate Forum in Germany. Atiyah has received two awards often referred to as the Nobel prizes of mathematics, the Fields medal and the Abel Prize; he also served as president of the London Mathematical Society, the Royal Society and the Royal Society of Edinburgh.

"[T]he hypothesis is intimately connected to the distribution of prime numbers, those indivisible by any whole number other than themselves and one," reports New Scientist. "If the hypothesis is proven to be correct, mathematicians would be armed with a map to the location of all such prime numbers, a breakthrough with far-reaching repercussions in the field."