日期：2012-07-20 A Simon Fraser University fish-population statistician, working in collaboration with non-government organization scientists, has uncovered evidence of a potentially deadly virus in a freshwater sport fish in B.C. SFU professor Rick Routledge and St... 阅读全文>>

日期：2012-07-20 Global emissions of carbon dioxide (CO2) -- the main cause of global warming -- increased by 3% last year, reaching an all-time high of 34 billion tonnes in 2011. In China, the world's most populous（人口稠密的） country, average emissions of CO2 in... 阅读全文>>

日期：2012-07-19 Sleep deprivation in the first few hours after exposure to a significantly stressful threat actually reduces the risk of Post-Traumatic Stress Disorder (PTSD), according to a study by researchers from Ben-Gurion University of the Negev (BGU) and Tel... 阅读全文>>

日期：2012-07-19 Scientists have discovered a way to make worker bees produce an enhanced version of royal jelly（蜂王浆） (RJ) -- the super-nutritious substance that dictates whether larvae（幼虫） become workers or queens, and that is also renowned as a health sup... 阅读全文>>

日期：2012-07-19 Chimpanzees use weight to pick the best tool, and monkeys beg more when they're paid attention to, as reported in two independent research reports published July 18 in the open access journal PLoS ONE. In the chimp study, researchers found that the... 阅读全文>>

日期：2012-07-19 Unique arm morphology（形态学） in Neandertals was likely caused by scraping activities such as hide preparation, not spear thrusting as previously theorized, according to research published July 18 in the open access journal PLoS ONE. The researche... 阅读全文>>

日期：2012-07-18 Recent excavations, sediment coring and mapping by a multi-university team led by the University of Cincinnati at the pre-Columbian city of Tikal, a paramount（最重要的） urban center of the ancient Maya, have identified new landscaping and engineer... 阅读全文>>

日期：2012-07-18 Males of the Japanese tree frog have learnt not to use their calls at the same time so that the females can distinguish between them. Scientists at the Polytechnic University of Catalonia have used this form of calling behaviour to create an algorit... 阅读全文>>

日期：2012-07-18 High consumption of vitamin E either from diet or vitamin supplements may lower the risk of liver cancer, according to a study published July 17 in the Journal of the National Cancer Institute. Liver cancer is the third most common cause of cancer m... 阅读全文>>

日期：2012-07-18 A network of p orous（多孔渗水的） carbon tubes that is three-dimensionally interwoven（互相编织） at nano and micro level -- this is the lightest material in the world. It weights only 0.2 milligrams per cubic centimetre, and is therefore 75 times... 阅读全文>>

日期：2012-07-17 Global warming also affects lakes. Based on the example of Lake Zurich, researchers from the University of Zurich demonstrate that there is insufficient water turnover in the lake during the winter and harmful Burgundy blood algae（藻类） are increa... 阅读全文>>

日期：2012-07-17 There's no honor among thieves when it comes to rodent robbers -- which turns out to be a good thing for tropical trees that depend on animals to spread their seeds. Results of a yearlong study in Panama, published online in Proceedings of the Natio... 阅读全文>>

日期：2012-07-17 Currently, large doses of chemotherapy are required when treating certain forms of cancer, resulting in toxic side effects. The chemicals enter the body and work to destroy or shrink the tumor, but also harm vital organs and drastically（彻底地） af... 阅读全文>>

日期：2012-07-17 Researchers at the Johns Hopkins Malaria Research Institute have genetically modified a bacterium commonly found in the mosquito's midgut（中肠） and found that the parasite that causes malaria in people does not survive in mosquitoes carrying the m... 阅读全文>>

日期：2012-07-17 Researchers at Rice University and Lockheed Martin reported this month that they've found a way to make multiple high-performance anodes（阳极） from a single silicon wafer（硅片） . The process uses simple silicon to replace graphite as an element... 阅读全文>>

日期：2012-07-17 Clogged printer nozzles（喷嘴） waste time and money while reducing print quality. University of Missouri engineers recently invented a clog-preventing nozzle cover by mimicking the human eye. The nozzle cover we invented was inspired by the human e... 阅读全文>>

日期：2012-07-17 Activity lingers longer in certain areas of the brain in those with Alzheimer's than it does in healthy people, Mayo Clinic researchers who created a map of the brain found. The results suggest varying brain activity may reduce the risk of Alzheimer... 阅读全文>>

日期：2012-07-17 Consumers are more likely to select products located in the horizontal（水平的） center of a display and may not make the best choices as a result, according to a new study in the Journal of Consumer Research. A close investigation of visual attenti... 阅读全文>>

日期：2012-07-13 Scientists have long believed that comets and, or a type of very primitive meteorite（陨星） called carbonaceous chondrites（碳粒陨星） were the sources of early Earth's volatile elements -- which include hydrogen, nitrogen, and carbon -- and possib... 阅读全文>>

日期：2012-07-13 Fuel cells are inefficient because the catalyst most commonly used to convert chemical energy to electricity is made of the wrong material, a researcher at Case Western Reserve University argues. Rather than continue the futile effort to tweak that... 阅读全文>>