日期：2013-02-06 A new kind of pterosaur（翼龙） , a flying reptile from the time of the dinosaurs, has been identified by scientists from the Transylvanian Museum Society in Romania, the University of Southampton in the UK and the Museau Nacional in Rio de Janiero,... 阅读全文>>

日期：2013-02-06 The Navy's fifth Littoral Combat Ship (LCS), Milwaukee, will be the first to benefit from new high-power density waterjets（喷水式推进器） aimed at staving off rudder（船舵） and propeller damage experienced on high-speed ships. The product of an Of... 阅读全文>>

日期：2013-02-06 Researchers at Johns Hopkins have devised a way to detect whether cells previously transplanted into a living animal are alive or dead, an innovation they say is likely to speed the development of cell replacement therapies for conditions such as li... 阅读全文>>

日期：2013-02-06 Among patients with chronic unilateral（单边的） lateral epicondylalgia (tennis elbow), a single injection of corticosteroid（皮质类固醇） medication was associated with poorer outcomes after one year and higher recurrence rates compared with placeb... 阅读全文>>

日期：2013-02-03 There is something sinister（阴险的） about epilepsy: the disease affects the very core of our being, our brain. Epileptic attacks can lead to seizures throughout the body or in parts of it. Clouding of consciousness or memory lapses are also possib... 阅读全文>>

日期：2013-02-03 Humans alone were responsible for the demise of Australia's iconic extinct native predator, the Tasmanian Tiger or thylacine（袋狼） , a new study led by the University of Adelaide has concluded. Using a new population modelling approach, the study... 阅读全文>>

日期：2013-02-03 A research team in Japan exploring the functions of messenger ribonucleic acid (mRNA) -- a molecule that encodes the chemical blueprint for protein synthesis -- has discovered a way to take a close look at the temperature distribution inside living... 阅读全文>>

日期：2013-02-03 With the discovery of antibiotics, medicine acquired power on a scale never before possible to protect health, save lives, and reduce suffering caused by certain bacteria. But the power of antibiotics is now under siege because some virulent infecti... 阅读全文>>

日期：2013-02-03 The shortened daylight of a Maine winter may make for long, dark nights -- but it has shone a light on a novel experimental approach to fighting inflammatory breast cancer (IBC), an especially deadly form of breast cancer. The new approach enlists t... 阅读全文>>

日期：2013-02-01 A team of scientists have described twenty four new species of dipterans（双翅类昆虫） belonging to Quichuana genus, of which only a further 24 species were known. The researchers, including two Spanish biologists, have been studying the forests of... 阅读全文>>

日期：2013-02-01 A hole in the Antarctic ozone layer has changed the way that waters in the southern oceans mix, a situation that has the potential to alter the amount of CO2 in the atmosphere and eventually could have an impact on global climate change, a Johns Hop... 阅读全文>>

日期：2013-02-01 For the first time, researchers have been able to see a thought swim through the brain of a living fish. The new technology is a useful tool for studies of perception. It might even find use in psychiatric drug discovery, according to authors of the... 阅读全文>>

日期：2013-02-01 A large population-based study from Finland has shown that being unmarried increases the risk of fatal（致命的） and non-fatal heart attack in both men and women whatever their age. Conversely, say the study investigators, especially among middle-ag... 阅读全文>>

日期：2013-02-01 Medical illustrators and neurological imaging experts at Johns Hopkins have figured out how night-hunting owls can almost fully rotate their heads -- by as much as 270 degrees in either direction -- without damaging the delicate blood vessels in the... 阅读全文>>

日期：2013-02-01 University of Utah researchers decoded the genetic blueprint of the rock pigeon, unlocking secrets about pigeons' Middle East origins, feral（野生的，凶猛的） pigeons' kinship with escaped racing birds, and how mutations give pigeons traits like a f... 阅读全文>>

日期：2013-01-31 An international team of researchers has shown that old wives' tales that snails can tell us about the weather should not be dismissed too hastily（匆忙地） . While the story goes that if a snail climbs a plant or post, rain is coming, research led... 阅读全文>>

日期：2013-01-31 Comforting a friend or relative in distress may be a more hard-wired behavior than previously thought, according to a new study of bonobos（倭黑猩猩） , which are great apes known for their empathy and close relation to humans and chimpanzees. This... 阅读全文>>

日期：2013-01-31 Forget slow and steady wins the race. A new study shows that, at least sometimes, the best way to conserve energy and reach your destination on time is to alternate between walking and running -- whether your goal is the bus stop or a marathon finis... 阅读全文>>

日期：2013-01-31 A cluster of tapeworm（绦虫） eggs discovered in 270-million-year-old fossilized shark feces suggests that intestinal（肠的） parasites in vertebrates are much older than previously known, according to research published January 30 in the open acces... 阅读全文>>

日期：2013-01-30 According to a new technical report, the effects of climate change will continue to threaten the health and vitality of U.S. coastal communities' social, economic and natural systems. The report, Coastal Impacts, Adaptation, and Vulnerabilities: a t... 阅读全文>>