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Hardware

Physicists Find Solid-State 'Triple Point' In Material That Conducts, Insulates 35

vinces99 writes "It is well known to scientists that the three common phases of water – ice, liquid and vapor – can exist stably together only at a particular temperature and pressure, called the triple point. Also well known is that the solid form of many materials can have numerous phases, but it is difficult to pinpoint the temperature and pressure for the points at which three solid phases can coexist stably. Physicists now have made the first-ever accurate determination of a solid-state triple point in a substance called vanadium dioxide, which is known for switching rapidly – in as little as one 10-trillionth of a second – from an electrical insulator to a conductor, and thus could be useful in various technologies. 'These solid-state triple points are fiendishly difficult to study, essentially because the different shapes of the solid phases makes it hard for them to match up happily at their interfaces,' said David Cobden, a University of Washington physics professor who is lead author of a paper about the research published in Nature. 'There are, in theory, many triple points hidden inside a solid, but they are very rarely probed.'"
Medicine

New Drug Mimics the Beneficial Effects of Exercise 492

Zothecula writes "A drug known as SR9009, which is currently under development at The Scripps Research Institute, increases the level of metabolic activity in skeletal muscles of mice. Treated mice become lean, develop larger muscles and can run much longer distances simply by taking SR9009, which mimics the effects of aerobic exercise. If similar effects can be obtained in people, the reversal of obesity, metabolic syndrome, and perhaps Type-II diabetes might be the very welcome result."
The Media

Half of All Research Papers Published In 2011 Already Free To Read 82

ananyo writes "Search the Internet for any research article published in 2011, and you have a 50-50 chance of downloading it for free. This claim — made in a report produced for the European Commission — suggests that many more research papers are openly available online than was previously thought. Previous best estimates for the proportion of papers free online run at around 30%. Peter Suber, director of the Office for Scholarly Communication at Harvard University in Cambridge, Massachusetts, says the report confirms his optimism. 'When researchers hit a paywall online, they turn to Google to search for free copies — and, increasingly, they are finding them,' he says."
Earth

International Climate Panel Cites Near Certainty On Warming 510

mdsolar writes "An international panel of scientists has found with near certainty that human activity is the cause of most of the temperature increases of recent decades, and warns that sea levels could conceivably rise by more than three feet by the end of the century if emissions continue at a runaway pace. The scientists, whose findings are reported in a draft summary of the next big United Nations climate report, largely dismiss a recent slowdown in the pace of warming, which is often cited by climate change doubters, attributing it most likely to short-term factors. The report emphasizes that the basic facts about future climate change are more established than ever, justifying the rise in global concern. It also reiterates that the consequences of escalating emissions are likely to be profound." This comes alongside news of research into one of those short-term factors: higher than average rainfall over Australia. "Three atmospheric patterns came together above the Indian and Pacific Oceans in 2010 and 2011. When they did, they drove so much precipitation over Australia that the world's ocean levels dropped measurably." According to Phys.org, "A rare combination of two other semi-cyclic climate modes came together to drive such large amounts of rain over Australia that the continent, on average, received almost one foot (300 millimeters) of rain more than average. ... Since 2011, when the atmospheric patterns shifted out of their unusual combination, sea levels have been rising at a faster pace of about 10 millimeters (0.4 inches) per year."
Medicine

What's Causing the Rise In Obesity? Everything. 926

Mr_Blank writes "We all know — because we are being constantly reminded — that we are getting fat. Americans are at the forefront of the trend, but it is a transnational one. Apparently, it is also trans-species: Over the past 20 years, as the American people were getting fatter, so were America's laboratory macaques, chimpanzees, vervet monkeys and mice, as well as domestic dogs, domestic cats, and domestic and feral rats from both rural and urban areas. Researchers examined records on those eight species and found that average weight for every one had increased. The marmosets gained an average of 9% per decade. Lab mice gained about 11% per decade. Chimps are doing especially badly: their average body weight had risen 35% per decade. What is causing the obesity era? Everything."

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