日期：2011-11-23 Engineers at Virginia Polytechnic（工业学院） Institute and State University (VirginiaTech) have developed a robot that mimics the graceful motions of jellyfish（水母，海蜇） so precisely that it has been named Robojelly. Developed for the U.S. Offi... 阅读全文>>

日期：2011-11-23 People sleep significantly better and feel more alert during the day if they get at least 150 minutes of exercise a week, a new study concludes. A nationally representative sample of more than 2,600 men and women, ages 18-85, found that 150 minutes... 阅读全文>>

日期：2011-11-22 Global food demand could double by 2050, according to a new projection by David Tilman, Regents Professor of Ecology in the University of Minnesota's College of Biological Sciences, and colleagues, including Jason Hill, assistant professor in the Co... 阅读全文>>

日期：2011-11-22 People who believe there is a lot of disagreement among scientists about global warming tend to be less certain that global warming is happening and less supportive of climate policy, researchers at George Mason, San Diego State, and Yale Universiti... 阅读全文>>

日期：2011-11-22 Natural selection has played a role in the development of the many skins patterns of the tiny Ranitomeya imitator（模仿者） poison dart frog, according to a study that will be published in an upcoming edition of American Naturalist by University of... 阅读全文>>

日期：2011-11-20 Researchers at NYU Langone Medical Center have discovered a protein called TAT-5 that affects the production of extracellular（细胞外的） vesicles, small sacs（囊） of membrane released from the surface of cells, capable of sending signals to other... 阅读全文>>

日期：2011-11-20 It's well known that Earth's most severe mass extinction occurred about 250 million years ago. What's not well known is the specific time when the extinctions occurred. A team of researchers from North America and China have published a paper in Sci... 阅读全文>>

日期：2011-11-20 Ever wondered why flies are attracted to beer? Entomologists（昆虫学家） at the University of California, Riverside have, and offer an explanation. They report that flies sense glycerol（甘油） , a sweet-tasting compound that yeasts make during ferm... 阅读全文>>

日期：2011-11-20 Scientists at Chalmers have succeeded in creating light from vacuum（真空） -- observing an effect first predicted over 40 years ago. In an innovative experiment, the scientists have managed to capture some of the photons that are constantly appeari... 阅读全文>>

日期：2011-11-20 In the fast-paced world of health care, doctors are often pressed for time during patient visits. Researchers at the University of Missouri developed a tool that allows doctors to view electronic information about patients' health conditions related... 阅读全文>>

日期：2011-11-18 Researchers the world over are seeking reliable ways to predict earthquakes, focusing on identifying seismic（地震的） precursors that, if detected early enough, could serve as early warnings. New research, published this week in the journal Applied... 阅读全文>>

日期：2011-11-18 Arizona State University researchers have created a new compound crystal material that promises to help produce advances in a range of scientific and technological pursuits. ASU electrical engineering professor Cun-Zheng Ning says the material, call... 阅读全文>>

日期：2011-11-18 Extinct animals hide their secrets well, but an exceptionally well-preserved fossil of an aquatic（水生的） reptile（爬行动物） , with traces of soft tissue present, is providing scientists a new window into the behavior of these ancient swimmers. A... 阅读全文>>

日期：2011-11-18 A new study that takes a complete snapshot of adolescent cardiovascular（心血管的） health in the United States reveals a dismal（凄凉的） picture of teens who are likely to die of heart disease at a younger age than adults do today, reports Northwe... 阅读全文>>

日期：2011-11-18 For people who initially survive a heart attack, a significant cause of death in the next few days is cardiac rupture（破裂） -- literally, bursting of the heart wall. A new study by University of Iowa researchers pinpoints a single protein as the k... 阅读全文>>

日期：2011-11-18 Researchers at NYU Langone Medical Center have discovered a protein called TAT-5 that affects the production of extracellular（细胞外的） vesicles, small sacs of membrane released from the surface of cells, capable of sending signals to other cells.... 阅读全文>>

日期：2011-11-16 Tissue with wound-like conditions allows tumors to grow and spread. In mouse lung cancer cells, treatment with silibinin（水飞蓟） , a major component of milk thistle, removed the molecular billboards that signal these wound-like conditions and so s... 阅读全文>>

日期：2011-11-16 Use of the contraceptive pill（避孕药） is associated with an increased risk of prostate cancer around the globe, finds research published in BMJ Open. Prostate cancer is the most common male cancer in the developed world and the use of the contrace... 阅读全文>>

日期：2011-11-16 For decades, scientists have dreamed of building computer systems that could replicate（复制，折叠） the human brain's talent for learning new tasks. MIT researchers have now taken a major step toward that goal by designing a computer chip that mimi... 阅读全文>>

日期：2011-11-16 If you tell yourself that someone who's being mean is just having a bad day -- it's not about you -- you may actually be able to stave off（避开，延缓） bad feelings, according to a new study which will be published in an upcoming issue of Psycholog... 阅读全文>>