日期：2013-01-30 Thanks to cultural evolution, male Savannah sparrows are changing their tune, partly to attract the ladies. According to a study of more than 30 years of Savannah sparrows recordings, the birds are singing distinctly different songs today than their... 阅读全文>>

日期：2013-01-30 Coral reefs build their structures by both producing and accumulating calcium carbonate, and this is essential for the maintenance and continued vertical（垂直的） growth capacity of reefs. An international research team has discovered that the amou... 阅读全文>>

日期：2013-01-30 In a first-of-its-kind feat of science and engineering, a National Science Foundation (NSF)-funded research team has successfully drilled through 800 meters (2,600 feet) of Antarctic ice to reach a subglacial（冰川下的） lake and retrieve water and... 阅读全文>>

日期：2013-01-30 Researchers employing a century-old observational technique have determined the precise configuration of humulones, substances derived from hops（啤酒花） that give beer its distinctive flavor. That might not sound like a big deal to the average bre... 阅读全文>>

日期：2013-01-29 Japanese researchers show for the first time that primates modify their body movements to be in tune with others, just like humans do. Humans unconsciously modify their movements to be in synchrony with their peers. For example, we adapt our pace to... 阅读全文>>

日期：2013-01-29 Research by U.S. Forest Service scientists forecasts profound changes over the next 50 years in the summer range of the endangered Indiana bat. In an article published in the journal Ecology and Evolution, Forest Service Southern Research Station re... 阅读全文>>

日期：2013-01-29 Earth's forests perform a well-known service to the planet, absorbing a great deal of the carbon dioxide pollution emitted into the atmosphere from human activities. But when trees are killed by natural disturbances, such as fire, drought or wind, t... 阅读全文>>

日期：2013-01-29 A popular dog treat could be adding more calories than pet owners realize, and possibly be contaminated by bacteria, according to a study published this month by researchers at the Cummings School of Veterinary Medicine at Tufts University and the U... 阅读全文>>

日期：2013-01-29 In what is believed to be the first study of its kind, researchers used genomic techniques to document the presence of significant numbers of living microorganisms -- principally bacteria -- in the middle and upper troposphere（对流层） , that secti... 阅读全文>>

日期：2013-01-28 University of Cincinnati (UC) researchers have found that lightning may affect the onset of headache and migraines（偏头痛） . These results, published in the Jan. 24, 2013 online edition of the journal Cephalalgia, are the first tying lightning to... 阅读全文>>

日期：2013-01-28 The bread and butter of investing for Silicon Valley tech companies is stale（陈腐的） . Instead, a new method of predicting the evolution of technology could save tech giants millions in research and development or developments of new products -- a... 阅读全文>>

日期：2013-01-28 The sun's energy is virtually limitless, but harnessing its electricity with today's single-crystal silicon solar cells is extremely expensive -- 10 times pricier than coal, according to some estimates. Organic solar cells -- polymer solar cells tha... 阅读全文>>

日期：2013-01-28 For purposes of their research, the scientists irradiated two separate layered systems with ultrashort laser pulses on the order of just one hundred femtoseconds (10-15 s). One sample consisted essentially of a single thin layer of ferromagnetic（铁... 阅读全文>>

日期：2013-01-28 Not surprisingly, a cancer diagnosis creates stress. And patients with prostate cancer show higher levels of anxiety compared to other cancer patients. A new study by researchers at Wake Forest Baptist Medical Center indicates that stress is not jus... 阅读全文>>

日期：2013-01-28 Even if you live more than 1,000 miles from the nearest large city, it could be affecting your weather. In a new study that shows the extent to which human activities are influencing the atmosphere, scientists have concluded that the heat generated... 阅读全文>>

日期：2013-01-25 A University of Alberta professor has revealed the workings of a celestial（天空的） event involving binary stars（双子星） that results in an explosion so powerful it ranks close to Supernovae in luminosity（光度，光辉） . Astrophysicists have long... 阅读全文>>

日期：2013-01-25 The discovery of a new bird-like dinosaur from the Jurassic period challenges widely accepted theories on the origin of flight. Co-authored by Dr Gareth Dyke, Senior Lecturer in Vertebrate Palaeontology at the University of Southampton, the paper de... 阅读全文>>

日期：2013-01-25 An insect with a tiny brain and minimal computing power has become the first animal proven to use the Milky Way for orientation. Scientists from South Africa and Sweden have published findings showing the link between dung beetles and the spray of s... 阅读全文>>

日期：2013-01-24 Researchers from Wits University, the University of Johannesburg and international scientists announced on January 22, 2012, the discovery of a two million year old fossil fox at the now renowned archaeological site of Malapa in the Cradle of Humank... 阅读全文>>

日期：2013-01-24 Researchers from North Carolina State University have developed elastic（有弹性的） , self-healing wires in which both the liquid-metal core and the polymer sheath（鞘，护套） reconnect at the molecular level after being severed. Because we're using... 阅读全文>>