日期：2013-05-22 Activating an enzyme known to play a role in the anti-aging benefits of calorie restriction delays the loss of brain cells and preserves cognitive function in mice, according to a study published in the May 22 issue of The Journal of Neuroscience. T... 阅读全文>>

日期：2013-05-21 Meeting the demand for more data storage in smaller volumes means using materials made up of ever-smaller magnets, or nanomagnets. One promising material for a potential new generation of recording media is an alloy of iron and platinum with an orde... 阅读全文>>

日期：2013-05-21 Little is known about the effect of physical education (PE) on child weight, but a new study from Cornell University finds that increasing the amount of time that elementary schoolchildren spent in gym class reduces the probability of obesity. The s... 阅读全文>>

日期：2013-05-21 The Amazon rain forest, popularly known as the lungs of the planet, inhales carbon dioxide as it exudes oxygen. Plants use carbon dioxide from the air to grow parts that eventually fall to the ground to decompose or get washed away by the region's p... 阅读全文>>

日期：2013-05-21 A new study of both computer-created and natural proteins suggests that the number of unique pockets -- sites where small molecule pharmaceutical compounds can bind to proteins -- is surprisingly small, meaning drug side effects may be impossible to... 阅读全文>>

日期：2013-05-21 Parents who share a bed with their breastfed baby could face a fivefold increase in the risk of crib death（婴儿猝死综合症） , even if the parents do not smoke, according to a new study. The research was led by the London School of Hygiene Tropical... 阅读全文>>

日期：2013-05-20 Scientists say the recent downturn in the rate of global warming will lead to lower temperature rises in the short-term. 科学家称，近期全球变暖趋势的暂缓将造成短期内气温升高的降低。 Since 1998, there has been an unexplained standstill in the heating... 阅读全文>>

日期：2013-05-20 The amount of time asthma patients spend soaking up the sun may have an impact on the illness, researchers have suggested. 研究人员建议，哮喘病人晒太阳可能对治疗该病有利。 A team at King's College London said low levels of vitamin D, which is made b... 阅读全文>>

日期：2013-05-20 New research has revealed that the evolution of the complex, weight-bearing hips of walking animals from the basic hips of fish was a much simpler process than previously thought. Tetrapods（四肢动物） , or four-legged animals, first stepped onto la... 阅读全文>>

日期：2013-05-20 A new species of green palm-pitviper of the genus Bothriechis is described from a seriously threatened cloud forest reserve in northern Honduras. Because of similarity in color pattern and scalation（鳞） , the new species (Bothriechis guifarroi) wa... 阅读全文>>

日期：2013-05-20 In a dark, starless patch of intergalactic（星系间的） space, astronomers have discovered a never-before-seen cluster of hydrogen clouds strewn between two nearby galaxies, Andromeda (M31) and Triangulum (M33). The researchers speculate that these r... 阅读全文>>

日期：2013-05-20 Detecting alien worlds presents a significant challenge since they are small, faint（模糊的） , and close to their stars. The two most prolific（丰富的） techniques for finding exoplanets are radial velocity (looking for wobbling摇晃的 stars) and tr... 阅读全文>>

日期：2013-05-20 What is the long-range weather forecast for the giant planets Uranus and Neptune? These planets are home to extreme winds blowing at speeds of over 1000 km/hour, hurricane-like storms as large around as Earth, immense weather systems that last for y... 阅读全文>>

日期：2013-05-19 Scientists at the University of California, Davis, detected the H1N1 (2009) virus in free-ranging northern elephant seals off the central California coast a year after the human pandemic began, according to a study published today, May 15, in the jo... 阅读全文>>

日期：2013-05-19 A new Dartmouth College study finds human-caused climate change may have little impact on many species of tropical lizards, contradicting a host of recent studies that predict their widespread extinction in a rapidly warming planet. The findings app... 阅读全文>>

日期：2013-05-19 Physicists may have created the smallest drops of liquid ever made in the lab. That possibility has been raised by the results of a recent experiment conducted by Vanderbilt physicist Julia Velkovska and her colleagues at the Large Hadron Collider,... 阅读全文>>

日期：2013-05-19 The answer is yes, according to a paper in the SIAM Journal on Discrete Mathematics. In a paper published in the journal last month, authors Anthony Bonato, Dieter Mitsche, and Pawel Pralat describe a mathematical model to disrupt flow of informatio... 阅读全文>>

日期：2013-05-19 Whether we're listening to Bach or the blues, our brains are wired to make music-color connections depending on how the melodies make us feel, according to new research from the University of California, Berkeley. For instance, Mozart's jaunty Flute... 阅读全文>>

日期：2013-05-19 Materials belonging to the family of dilute（稀释的） magnetic oxides (DMOs) -- an oxide-based variant of the dilute magnetic semiconductors -- are good candidates for spintronics（自旋电子学） applications. This is the object of study for Davide Sa... 阅读全文>>

日期：2013-05-19 美国杜克大学福夸商学院和加州大学圣地亚哥分校的研究人员发现，声音低沉的首席执行官通常都比高嗓门的同僚挣得多，而且为公司服务的年限也更长。 We will never know to what degree Margaret Thatcher's efforts to lower the pitch of her voice influenced her ele... 阅读全文>>