日期：2012-03-23 Hunting in the ocean's murky（黑暗的） depths, vision is of little use, so toothed whales and dolphins (odontocetes) rely on echolocation to locate tasty morsels（一口，少量） with incredible precision. Laura Kloepper from the University of Hawaii,... 阅读全文>>

日期：2012-03-22 A new assessment of wind energy in India by Lawrence Berkeley National Laboratory has found that the potential for on-shore wind energy deployment is far higher than the official estimates -- about 20 times and up to 30 times greater than the curren... 阅读全文>>

日期：2012-03-22 Even if humankind manages to limit global warming to 2 degrees C (3.6 degrees F), as the Intergovernmental Panel on Climate Change recommends, future generations will have to deal with sea levels 12 to 22 meters (40 to 70 feet) higher than at presen... 阅读全文>>

日期：2012-03-22 A growing body of research shows that birds and other animals change their behavior in response to humanmade noise, such as the din（喧嚣） of traffic or the hum（嗡嗡声） of machinery. But human clamor doesn't just affect animals. Because many anim... 阅读全文>>

日期：2012-03-22 Scientists have for the first time determined the three-dimensional atomic structure of a human opioid（阿片样物质） receptor, a molecule on the surface of brain cells that binds to opioids and is centrally involved in pleasure, pain, addiction, dep... 阅读全文>>

日期：2012-03-21 Since the explosion on the BP Deepwater Horizon drilling rig in the Gulf of Mexico on April 20, 2010, scientists have been working to understand the impact that this disaster has had on the environment. For months, crude oil gushed into the water at... 阅读全文>>

日期：2012-03-21 A new study by researchers at MIT shows that there is enough capacity in deep saline aquifers（盐碱含水层） in the United States to store at least a century's worth of carbon dioxide emissions from the nation's coal-fired powerplants. Though questio... 阅读全文>>

日期：2012-03-21 Chemical additives that help agricultural pesticides adhere to their targets during spraying can lead to formation of smaller satellite droplets that cause those pesticides to drift into unwanted areas, Purdue University researchers have found. Carl... 阅读全文>>

日期：2012-03-21 High-gain nuclear fusion（核聚变） could be achieved in a preheated cylindrical（圆柱形的） container immersed in strong magnetic fields, according to a series of computer simulations performed at Sandia National Laboratories. The simulations show t... 阅读全文>>

日期：2012-03-20 A new method to reveal the structure of proteins could help researchers understand biological molecules -- both those involved in causing disease and those performing critical functions in healthy cells. For roughly a decade, a technique called soli... 阅读全文>>

日期：2012-03-20 Space scientists from the University of New Hampshire and multi-institutional colleagues report they have quantified levels of radiation on the moon's surface from galactic cosmic ray (GCR) bombardment（轰炸，炮击） that over time causes chemical ch... 阅读全文>>

日期：2012-03-20 More than 400 years after Galileo's discovery of Io, the innermost（最里面的） of Jupiter's largest moons, a team of scientists led by Arizona State University (ASU) has produced the first complete global geologic map of the Jovian satellite. The ma... 阅读全文>>

日期：2012-03-20 A clock accurate to within a tenth of a second over 14 billion years -- the age of the universe -- is the goal of research being reported this week by scientists from three different institutions. To be published in the journal Physical Review Lette... 阅读全文>>

日期：2012-03-20 A study by the Wildlife Conservation Society, ARC Centre for Excellence for Coral Reef Studies, and other groups on more than 40 coral reefs in the Indian and Pacific Oceans indicates that co-management -- a collaborative arrangement between local c... 阅读全文>>

日期：2012-03-20 House mice (Mus musculus) happily live wherever there are humans. When populations of humans migrate the mice often travel with them. New research published in BioMed Central's open access journal BMC Evolutionary Biology has used evolutionary techn... 阅读全文>>

日期：2012-03-14 More than one hundred years after the pioneering inventor Nikola Tesla first became fascinated with wireless energy transfer, the spread of mobile electronic devices has sparked renewed interest in the ability to power up without plugging in. Now re... 阅读全文>>

日期：2012-03-14 Might the Twinkie defense have a scientific foundation after all? Researchers at the University of California, San Diego School of Medicine have shown -- by each of a range of measures, in men and women of all ages, in Caucasians and minorities -- t... 阅读全文>>

日期：2012-03-14 Bows and flows of angel hair, and ice cream castles in the air; we've looked at clouds that way. But the interface（界面，接口） between clouds and clear air isn't as well-defined as these imaginative shapes might lead us to believe. Detecting that... 阅读全文>>

日期：2012-03-14 Do a Google image search for Greece. Before you find pictures of the Parthenon or Acropolis, you'll see several beautiful photos of Santorini, the picturesque（独特的，生动的） island in the Aegean Sea. The British Broadcasting Company named it the... 阅读全文>>

日期：2012-03-13 The Greenland ice sheet is likely to be more vulnerable to global warming than previously thought. The temperature threshold（门槛，极限） for melting the ice sheet completely is in the range of 0.8 to 3.2 degrees Celsius of global warming, with a b... 阅读全文>>