日期：2011-12-21 Forest thinning to help prevent or reduce severe wildfire will release more carbon to the atmosphere than any amount saved by successful fire prevention, a new study concludes. There may be valid（有效的） reasons to thin forests -- such as restorat... 阅读全文>>

日期：2011-12-20 The crushing pressures and intense temperatures in Earth's deep interior squeeze atoms and electrons so closely together that they interact very differently. With depth materials change. New experiments and supercomputer computations have revealed t... 阅读全文>>

日期：2011-12-20 When a plant encounters drought, it does its best to cope with this stress by activating a set of protein molecules called receptors（受体，感受器） . These receptors, once activated, turn on processes that help the plant survive the stress. A team... 阅读全文>>

日期：2011-12-20 A new study co-authored by University of Florida researchers on the endangered Ozark Hellbender giant salamander（娃娃鱼） is the first to detail its skin microbes, the bacteria and fungi that defend against pathogens. Published recently in the onli... 阅读全文>>

日期：2011-12-19 Statistical databases (SDBs) are collections of data that are used to gather and analyze information from a variety of sources. The data may be derived from sales transactions（处理） , customer files, voter registrations, medical records, employee... 阅读全文>>

日期：2011-12-19 Regular exercise tends to steeply decline among youth as they move to university or college, according to a study by researchers at McMaster University. Researchers found a 24 per cent decrease in physical activity over the 12 years from adolescence... 阅读全文>>

日期：2011-12-19 Imagine jeans, sweats or socks that clean and de-odorize themselves when hung on a clothesline in the sun or draped on a balcony railing（栏杆，扶手） . Scientists are reporting development of a new cotton fabric that does clean itself of stains and... 阅读全文>>

日期：2011-12-19 In pursuit of riches and energy over the last 5,000 years, humans have released into the environment 385,000 tons of mercury, the source of numerous health concerns, according to a new study that challenges the idea that releases of the metal are on... 阅读全文>>

日期：2011-12-19 Scientists may have a way to double the efficacy and reduce the side effects of radiation therapy. Georgia Health Sciences University scientists have devised a way to reduce lung cancer cells' ability to repair the lethal（致命的） double-strand DNA... 阅读全文>>

日期：2011-12-18 Any multicellular（多细胞的） animal, from a blue whale to a human being, poses a special difficulty for the theory of evolution. Most of the cells in its body will die without reproducing, and only a privileged few will pass their genes to the next... 阅读全文>>

日期：2011-12-18 Your parents were right: Hard experiences may indeed make you tough. Psychological scientists have found that, while going through many experiences like assault, hurricanes, and bereavement（丧亲） can be psychologically damaging, small amounts of t... 阅读全文>>

日期：2011-12-18 While Road Rippers Lightning Rods, Let's Rock Elmo and the I Am T-Pain musical microphone might be sought-after gifts this holiday season, parents should ensure that their children don't risk permanent hearing damage by misusing them. Researchers fr... 阅读全文>>

日期：2011-12-18 Whether the task is flying a plane, fighting a battle, or caring for a patient, good teamwork is crucial to getting it done right. That's why team-building and training courses are big business in the U.S., and have been for decades. But lately some... 阅读全文>>

日期：2011-12-18 A team of researchers from the University of Notre Dame have demonstrated a novel DNA detection method that could prove suitable for many real-world applications. Physicists Carol Tanner and Steven Ruggiero led the team in the application of a new t... 阅读全文>>

日期：2011-12-15 The Stillbirth Collaborative Research Network (SCRN) has reported that performing a systematic medical evaluation leads to a probable or possible cause of death in the majority of stillbirths. According to a study published in the Dec. 14, 2011 issu... 阅读全文>>

日期：2011-12-15 A new drug candidate may be the first capable of halting the devastating mental decline of Alzheimer's disease, based on the findings of a study published in PLoS ONE. When given to mice with Alzheimer's, the drug, known as J147, improved memory and... 阅读全文>>

日期：2011-12-15 Scientists from the University of Valencia in Spain have analysed fresh orange juice squeezed by machines in catering（餐饮） establishments. They have confirmed that 43% of samples exceeded the acceptable enterobacteriaceae（肠杆菌科） levels laid... 阅读全文>>

日期：2011-12-15 Scientists at the Gladstone Institutes have discovered new protein fragments in semen（精液） that enhance the ability of HIV, the virus that causes AIDS, to infect new cells -- a discovery that one day could help curb the global spread of this dead... 阅读全文>>

日期：2011-12-15 Scientists have found that the distinctive glossiness（光泽度） of the buttercup（金凤花） flower (Ranunculus repens), which children like to shine under the chin to test whether their friends like butter, is related to its unique anatomical（解剖的... 阅读全文>>

日期：2011-12-15 Imagine waking up and being unable to see or recognize anything on the left side of your body. This condition, called hemispatial neglect, is common after a stroke that occurs on the right side of the brain. The current treatment of attention and co... 阅读全文>>