日期：2009-12-20 Skull头盖骨，脑壳 fragments of prehistoric陈旧的，史前的 koalas from the Riversleigh rainforests of millions of year ago suggest they shared the modern koala's lazy lifestyle and ability to produce loud bellowing吼叫声，轰鸣声 calls to attract mates... 阅读全文>>

日期：2009-12-18 Herschel天王星 has peered凝视，窥视 inside an unseen stellar星的 nursery and revealed surprising amounts of activity. Some 700 newly-forming stars are estimated to be crowded into filaments花丝，灯丝 of dust stretching through the image. The image i... 阅读全文>>

日期：2009-12-18 A single-atom-thick sheet of carbon, like those seen in pencil marks -- offers great potential for new types of nanoscale纳米级 devices, if a good way can be found to mold the material into desired shapes. Chemists at the University of Illinois at C... 阅读全文>>

日期：2009-12-18 Canadian teenagers are among the largest consumers of cannabis印度大麻 worldwide. The damaging effects of this illicit违法的，不正当的 drug on young brains are worse than originally thought, according to new research by Dr. Gabriella Gobbi, a psychi... 阅读全文>>

日期：2009-12-18 When bombs and bullets left 37 dead during Friday prayers at a mosque清真寺 in Pakistan, earlier this month, the insurgency叛乱，暴动 was using the element of surprise. Unpredictability不可预见性 is the hallmark品质证明，特点 of modern insurgent att... 阅读全文>>

日期：2009-12-18 At a very early age, children learn how to classify objects according to their shape. Now, new research suggests studying the shape of the aftermath余波，后果 of supernovas超新星 may allow astronomers天文学家 to do the same. A new study of images fr... 阅读全文>>

日期：2009-12-18 Scientists funded by the National Science Foundation美国国家科学基金会 (NSF) and NOAA美国国家海洋和大气局 have recorded the deepest erupting volcano yet discovered--West Mata Volcano--describing high-definition video of the undersea eruption爆发，喷... 阅读全文>>

日期：2009-12-16 Post-surgical infections significantly increase the chance of hospital readmission再入院 and death and cost as much as $60,000 per patient, according to Duke University Medical Center researchers who conducted the largest study of its kind to date.... 阅读全文>>

日期：2009-12-16 NASA researchers studying urban城市的，市区的 landscapes have found that the intensity强烈，强度 of the heat island created by a city depends on the ecosystem it replaced and on the regional climate. Urban areas developed in arid干旱的，不毛的 and s... 阅读全文>>

日期：2009-12-16 Scientists once thought of tool use as a defining feature of humans. That's until examples of tool use came in from other primates灵长目 , along with连同一起 birds and an array of一批，大量 other mammals哺乳类 . Now, a report in the December 14th is... 阅读全文>>

日期：2009-12-15 Tea and coffee drinkers have a lower risk of developing type 2 diabetes, a large body of evidence shows. 大量证据显示，饮用茶和咖啡的人患2型糖尿病的风险低一些。 Three to four cups a day appeared to offer some protection And the protection may not be... 阅读全文>>

日期：2009-12-14 Researchers at The Scripps思科利普斯 Research Institute have solved a 10-year-old mystery of how a single protein from an ancient family of enzymes酶类，酵素 can have two completely distinct roles in the body. In addition to除之外 providing guidance... 阅读全文>>

日期：2009-12-12 University of Iowa researchers have found the existence of a new, rare inherited retinal视网膜 disease. Now the search is on to find the genetic cause, which investigators hope will increase understanding of more common retinal diseases. The finding... 阅读全文>>

日期：2009-12-12 A new study may explain why the England soccer team keeps losing in penalty shootouts罚点球 and could help the team address the problem in time for the World Cup 2010. Research by the University of Exeter shows for the first time the effect of anxie... 阅读全文>>

日期：2009-12-11 Ancient DNA retrieved重新取回 from extinct horse species from around the world has challenged one of the textbook examples of evolution the fossil record of the horse family Equidae over the past 55 million years. The study, published today in the P... 阅读全文>>

日期：2009-12-11 Iapetus伊阿佩托斯 is often called Saturn土星 's most bizarre奇异的 moon, due to its starkly明显地 contrasting hemispheres半球 one black as coal, the other white as snow. Images taken by the Cassini-Huygens spacecraft, orbiting Saturn since 2004, off... 阅读全文>>

日期：2009-12-11 Paleontologists, aided by amateur业余的 volunteers, have unearthed发掘 a previously unknown meat-eating dinosaur from a fossil bone bed骨层 in northern New Mexico, settling a debate about early dinosaur evolution, revealing a period of explosive div... 阅读全文>>

日期：2009-12-09 Bioengineers生物工程师 from University of California, San Diego are developing new regenerative therapies for heart disease. The work could influence the way in which regenerative therapies for cardiovascular心脏血管的 and other diseases are treated... 阅读全文>>

日期：2009-12-09 While supplements can help some people meet their nutrition营养 needs, eating a wide variety of nutrient-rich foods is the best way for most people to obtain the nutrients they need to be healthy and reduce their risk of chronic disease慢性病 , acco... 阅读全文>>

日期：2009-12-09 Using a new noninvasive非侵害的 imaging technique, scientists said they have discovered important, fundamental differences in heart motion by age and gender. Their study reported in Circulation: Cardiovascular心脏血管的 Imaging, a journal of the Ame... 阅读全文>>