日期：2012-05-08 Sauropod（蜥脚类动物） dinosaurs could in principle have produced enough of the greenhouse gas methane to warm the climate many millions of years ago, at a time when Earth was warm and wet. That's according to calculations reported in the May 8th is... 阅读全文>>

日期：2012-05-07 An over-the-counter natural remedy（补救，治疗） derived from honeybee hives arrests the growth of prostate cancer cells and tumors in mice, according to a new paper from researchers at the University of Chicago Medicine. Caffeic acid phenethyl este... 阅读全文>>

日期：2012-05-07 A parasite that fights the zombie-ant fungus has yielded some of its secrets to an international research team led by Penn State's David Hughes. The research reveals, for the first time, how an entire ant colony is able to survive infestations by th... 阅读全文>>

日期：2012-05-07 The atmosphere of Mars is less than 1 percent the density of Earth's. It's one of the reasons liquid water covers much of our planet but cannot exist on the Red Planet. As more research points toward the possibility of water on early Mars, scientist... 阅读全文>>

日期：2012-05-07 Fibroid（子宫肌瘤） uterine tumors affect an estimated 15 million women in the United States, causing irregular bleeding, anemia（贫血） , pain and infertility. Despite the high prevalence of the tumors, which occur in 60 percent of women by age 45,... 阅读全文>>

日期：2012-05-04 In classical mythology（神话） , the cypress（柏树） tree is associated with death, the underworld and eternity. Indeed, the family to which cypresses belong, is an ancient lineage of conifers（松柏类） , and a new study of their evolution affords a... 阅读全文>>

日期：2012-05-04 Being cut off from work email significantly reduces stress and allows employees to focus far better, according to a new study by UC Irvine and U.S. Army researchers. Heart rate monitors were attached to computer users in a suburban（郊区的） office... 阅读全文>>

日期：2012-05-04 Experiments may dramatically underestimate how plants will respond to climate change in the future. That's the conclusion of an analysis of 50 plant studies on four continents, published this week in an advance online issue of the journal Nature, wh... 阅读全文>>

日期：2012-05-04 More than 60 percent of young adults between the ages of 19 and 22 received some financial help from mom and dad, according to a new University of Michigan study. The average amount they received -- including help with college tuition, rent, and tra... 阅读全文>>

日期：2012-05-03 Maximum running speed is the most important variable influencing mammalian eye size other than body size, according to new research from The University of Texas at Austin. Species with larger eyes usually have higher visual acuity, says Chris Kirk,... 阅读全文>>

日期：2012-05-03 A study by the Wildlife Conservation Society documents that intense development of the two largest natural gas fields in the continental U.S. are driving away some wildlife from their traditional wintering grounds. Researchers tracking 125 female pr... 阅读全文>>

日期：2012-05-03 After a marathon debate over a pair of studies that show how the avian H5N1 influenza virus could become transmissible in mammals, and an unprecedented recommendation by a government review panel to block publication, one of the studies was finally... 阅读全文>>

日期：2012-05-03 An extraordinary outburst produced by a black hole in a nearby galaxy has provided direct evidence for a population of old, volatile（不稳定的） stellar black holes. The discovery, made by astronomers using NASA's Chandra X-ray Observatory, provides... 阅读全文>>

日期：2012-05-02 Evidence that a Florentine merchant house financed the earliest English voyages to North America, has been published on-line in the academic journal Historical Research. The article by Dr Francesco Guidi-Bruscoli, a member of a project based at the... 阅读全文>>

日期：2012-05-02 Scientists have predicted that ocean temperatures will rise in the equatorial（赤道的） Pacific by the end of the century, wreaking havoc（肆虐） on coral reef ecosystems. But a new study shows that climate change could cause ocean currents to opera... 阅读全文>>

日期：2012-05-02 Despite years of intensive research about the extinction of non-avian dinosaurs about 65.5 million years ago, a fundamental question remains: were dinosaurs already undergoing a long-term decline before an asteroid（小行星） hit at the end of the Cr... 阅读全文>>

日期：2012-05-02 In a single new scientific publication, 24 new species of lizards known as skinks（小蜥蜴） , all from islands in the Caribbean, have been discovered and scientifically named. According to Blair Hedges, professor of biology at Penn State University... 阅读全文>>

日期：2012-05-02 New evidence proves humans are continuing to evolve and that significant natural and sexual selection is still taking place in our species in the modern world. Despite advancements in medicine and technology, as well as an increased prevalence of mo... 阅读全文>>

日期：2012-05-02 Nearly 80 percent of disease in developing countries is linked to bad water and sanitation（环境卫生） . Now a scientist at Michigan Technological University has developed a simple, cheap way to make water safe to drink, even if it's muddy. It's eas... 阅读全文>>

日期：2012-04-27 A new University of British Columbia study finds that analytic thinking can decrease religious belief, even in devout（虔诚的） believers. The study, which is published in the April 27 issue of Science, finds that thinking analytically increases dis... 阅读全文>>