日期：2012-05-23 A new bright yellow frog species has been found in the mountains of western Panama. The frog belongs to a species-rich group of frogs, the so called rainfrogs that lack a tadpole（蝌蚪） stage, but develop directly as little frogs inside the egg. Th... 阅读全文>>

日期：2012-05-23 New fish-tagging studies of young bluefin tuna（金枪鱼） in Atlantic waters off New England by researchers at the University of Massachusetts Amherst are offering the first fishery-independent, year-round data on dispersal（分散，传播） patterns and... 阅读全文>>

日期：2012-05-23 A new study led by University of Kentucky researchers shows a new way to precisely detect a single chemical at extremely low concentrations and high contamination（污染） . The study, published online for ACS Nano, was carried out in the laboratory... 阅读全文>>

日期：2012-05-23 Biomedical engineers at UC Davis have developed a microfluidic（微流体） chip to test for latent（潜在的） tuberculosis. They hope the test will be cheaper, faster and more reliable than current testing for the disease. Our assay is cheaper, reusabl... 阅读全文>>

日期：2012-05-23 For the first time scientists have succeeded in taking skin cells from heart failure patients and reprogramming them to transform into healthy, new heart muscle cells that are capable of integrating with existing heart tissue. The research, which is... 阅读全文>>

日期：2012-05-23 Some cultures see the white spots as a good luck sign, and even call them fortune or gift spots. There's also the old idea that someone with a white spot on a fingernail is in love, or that the number of white spots equals the number of sweethearts... 阅读全文>>

日期：2012-05-22 Almost 13% of young people worldwide are out of work, and their situation is unlikely to improve for four years, a report by the International Labour Organisation (ILO) says. 国际劳工组织称，全世界大约有13%的年轻人处于失业状态，并且这种境况在未来4年... 阅读全文>>

日期：2012-05-22 Proteins are widely used as drugs -- insulin for diabetics（糖尿病） is the best known example -- and as reagents（试剂） in research laboratories, but they react poorly to fluctuations in temperature and are known to degrade in storage. Because of... 阅读全文>>

日期：2012-05-22 A clear change in salinity（盐度） has been detected in the world's oceans, signalling shifts and an acceleration in the global rainfall and evaporation（蒸发，消失） cycle. In a paper just published in the journal Science, Australian scientists fro... 阅读全文>>

日期：2012-05-22 The first purely silicon oxide-based 'Resistive RAM' memory chip that can operate in ambient（周围的） conditions -- opening up the possibility of new super-fast memory -- has been developed by researchers at UCL. Resistive RAM (or 'ReRAM') memory c... 阅读全文>>

日期：2012-05-22 Mobile ad hoc（特别的） networks (MANETs) allow people in multiple, rapidly-moving vehicles to communicate with each other -- such as in military or emergency-response situations. Researchers from North Carolina State University have devised a metho... 阅读全文>>

日期：2012-05-22 Environmental scientists at Harvard have discovered that the Arctic accumulation of mercury, a toxic element, is caused by both atmospheric forces and the flow of circumpolar（极地附近的） rivers that carry the element north into the Arctic Ocean. W... 阅读全文>>

日期：2012-05-21 In the first study of its kind in Australasia, scientists have used 27 natural climate records to create the first large-scale temperature reconstruction for the region over the last 1000 years. The study was led by researchers at the University of... 阅读全文>>

日期：2012-05-21 A collaboration between Lehigh University physicists and University of Miami biologists addresses an important fundamental question in basic cell biology: How do living cells figure out when and where to grow? The study, Oscillatory Dynamics of Cdc4... 阅读全文>>

日期：2012-05-21 The quantities are very small, but in milk powder and in meat-based baby food, residues（剩余物） of drugs given to livestock were found. Researchers from the University of Almeria (Spain) have developed a system to analyse these substances quickly... 阅读全文>>

日期：2012-05-21 Picture a turtle the size of a Smart car, with a shell large enough to double as a kiddie（小孩） pool. Paleontologists from North Carolina State University have found just such a specimen -- the fossilized remains of a 60-million-year-old South Ame... 阅读全文>>

日期：2012-05-21 More than 5,000 people die each year in vehicle crashes caused by distracted driving, many who were texting and talking on cellphones behind the wheel, according to the May 4 issue of CQ Researcher. Teen drivers appear to be especially susceptible t... 阅读全文>>

日期：2012-05-21 University of Nevada, Reno computer science engineering team Kostas Bekris and Eelke Folmer presented their indoor navigation system for people with visual impairments（缺陷） at two national conferences in the past two weeks. The researchers explai... 阅读全文>>

日期：2012-05-21 A pioneering study to gauge（测量，估计） the toxicity of quantum dots in primates has found the tiny crystals to be safe over a one-year period, a hopeful outcome for doctors and scientists seeking new ways to battle diseases like cancer through na... 阅读全文>>

日期：2012-05-17 New research shows how bacteria evolve to increase ecosystem functioning by recycling each other's waste. The study provides some of the first evidence for how interactions between species shape evolution when there is a diverse community. Predictin... 阅读全文>>