日期：2012-11-26 Near surface water has shaped the landscape of Mars. Areas of the planet's northern and southern hemispheres have alternately thawed（融解） and frozen in recent geologic history and comprise striking similarities to the landscape of Svalbard. This... 阅读全文>>

日期：2012-11-23 In the marine world, high-energy prey make for high-energy predators. And to survive, such marine predators need to sustain the right kind of high-energy diet. Not just any prey will do, suggests a new study by researchers from the University of Bri... 阅读全文>>

日期：2012-11-23 For the first time, researchers tracking the behavior of emperor penguins near the sea have identified the importance of sea ice for the penguins' feeding habits. The research, published November 21 in the open access journal PLOS ONE by Shinichi Wa... 阅读全文>>

日期：2012-11-23 Less than 2% of Earth's fossils are preserved in volcanic rock, but researchers have identified a new one: the skull of a rhino that perished in a volcanic eruption 9.2 million years ago. The find is described in a paper published November 21 in the... 阅读全文>>

日期：2012-11-23 Each winter, wide swaths（细长的列） of the Arctic Ocean freeze to form sheets of sea ice that spread over millions of square miles. This ice acts as a massive sun visor（遮阳板） for Earth, reflecting solar radiation and shielding the planet from e... 阅读全文>>

日期：2012-11-23 Scientists are developing new materials which could one day allow people to print out custom-designed personal electronics such as games controllers which perfectly fit their hand shape. The University of Warwick researchers have created a simple an... 阅读全文>>

日期：2012-11-23 Scientists have discovered an enzyme used in nature to make powerful chemicals from catnip（猫薄荷） to a cancer drug, vinblastine（长春花碱） . The discovery opens up the prospect of producing these chemicals cheaply and efficiently. They are produ... 阅读全文>>

日期：2012-11-23 A new study looking at the structure of feathers in bird-like dinosaurs has shed light on one of nature's most remarkable inventions -- how flight might have evolved. Academics at the Universities of Bristol, Yale and Calgary have shown that prehist... 阅读全文>>

日期：2012-11-23 Dogs learning to associate words with objects form these associations in different ways than humans do, according to research published November 21 in the open access journal PLOS ONE by Emile van der Zee and colleagues from the University of Lincol... 阅读全文>>

日期：2012-11-21 Portable, accurate, and highly sensitive devices that sniff out vapors（蒸汽） from explosives and other substances could become as commonplace as smoke detectors in public places, thanks to researchers at University of California, Santa Barbara. Re... 阅读全文>>

日期：2012-11-21 Scientists at Imperial College London have developed a system to quickly detect trace amounts（微量） of chemicals like pollutants, explosives or illegal drugs. The new system can pick out a single target molecule from 10,000 trillion water molecule... 阅读全文>>

日期：2012-11-21 A team of scientists, including Carnegie's Conel Alexander and Jianhua Wang, studied the hydrogen in water from the Martian interior and found that Mars formed from similar building blocks to that of Earth, but that there were differences in the lat... 阅读全文>>

日期：2012-11-21 Researchers at Wake Forest Baptist Medical Center have modified electrically-conductive polymers, commonly used in solar energy applications, to develop revolutionary polymer nanoparticles (PNs) for a medical application. When the nanoparticles are... 阅读全文>>

日期：2012-11-21 Scientists from Queen Mary, University of London have sequenced the genetic code of a birch（桦木） tree for the first time, which could help protect British birch populations. The genome, which is around 450 million letters, will help researchers u... 阅读全文>>

日期：2012-11-21 Animals, including humans, actively select the gut microbes that are the best partners and nurture them with nutritious secretions（分泌物） , suggests a new study led by Oxford University, and published November 20 in the open-access journal PLOS B... 阅读全文>>

日期：2012-11-21 It appears that it's not just us Brits who are fascinated（着迷） with the UK weather. A group of researchers from Germany has taken to investigating the potential changes in extreme rainfall patterns across the UK as a result of future global warmi... 阅读全文>>

日期：2012-11-20 Owls have the uncanny（神秘的） ability to fly silently, relying on specialized plumage to reduce noise so they can hunt in acoustic stealth（秘密行动） . Researchers from the University of Cambridge, England, are studying the owl's wing structure t... 阅读全文>>

日期：2012-11-20 The first in-depth investigation of whether youthful happiness leads to greater wealth in later life reveals that, even allowing for other influences, happy adolescents are likely to earn more money as adults. Dr Jan-Emmanuel De Neve (UCL Political... 阅读全文>>

日期：2012-11-20 Mosquitoes have the remarkable ability to fly in clear skies as well as in rain, shrugging off impacts from raindrops more than 50 times their body mass. But just like modern aircraft, mosquitoes also are grounded when the fog thickens. Researchers... 阅读全文>>

日期：2012-11-20 Chemists at New York University have discovered a family of anti-freeze molecules that prevent ice formation when water temperatures drop below 32 degrees Fahrenheit. Their findings, which are reported in the latest issue of the Proceedings of the N... 阅读全文>>