日期：2011-10-18 Rivers and streams in the United States are releasing enough carbon into the atmosphere to fuel 3.4 million car trips to the moon, according to Yale researchers in Nature Geoscience. Their findings could change the way scientists model the movement... 阅读全文>>

日期：2011-10-18 For the first time, a specific microorganism has been found to be associated with human colorectal（结肠直肠的） cancer. In two studies published online October 17 in Genome Research, independent research teams have identified Fusobacterium in colon... 阅读全文>>

日期：2011-10-14 An eight-year study has concluded that increasingly frequent and severe drought, dropping water tables and dried-up springs have pushed some aquatic（水生的） desert ecosystems into catastrophic regime change, from which many species will not recove... 阅读全文>>

日期：2011-10-14 When all else is equal, human children prefer to work together in solving a problem rather than on their own. Chimpanzees, on the other hand, show no such preference. That's according to a study of 3-year-old German kindergarteners and semi-free-ran... 阅读全文>>

日期：2011-10-14 Targeting a toxin（毒素） released by virtually all strains of MRSA could help scientists develop new drugs that can fight the superbug, research suggests. A study led by the University of Edinburgh has discovered the toxin -- SElX -- which leads th... 阅读全文>>

日期：2011-10-13 The Baltic Sea emits more carbon dioxide than it can bind. Local variations have increased the exposure of the Bay of Bothnia. These are the results from a study of how carbon dioxide flows between the water of the Baltic Sea and the atmosphere, car... 阅读全文>>

日期：2011-10-13 A central element of the immune system has remained constant through more than 400 million years of evolution, according to new research at National Jewish Health. In the September 29, 2011, online version of the journal Immunity, the researchers re... 阅读全文>>

日期：2011-10-13 Collisions between wild deer and vehicles not only hinder（阻碍，打扰） conservation efforts but pose a serious danger to drivers. In new research, published in the Wildlife Society Bulletin, Canadian scientists examined locations and time periods o... 阅读全文>>

日期：2011-10-13 BGI, the world's largest genomic organization, announced that an international team of researchers from Korea, China and the U.S. has, for the first time, demonstrated the physiology and longevity of the naked mole rats (NMR) in terms of genomics an... 阅读全文>>

日期：2011-10-13 Television ads featuring cute chimpanzees wearing human clothes are likely to distort（扭曲） the public's perception of the endangered animals and hinder（阻碍） conservation efforts, according to a team of primatologists and a marketing professor... 阅读全文>>

日期：2011-10-13 Woods Hole Oceanographic Institution (WHOI) scientists have discovered that bacterial communication could have a significant impact on the planet's climate. In the ocean, bacteria coalesce（合并，结合） on tiny particles of carbon-rich detritus（碎... 阅读全文>>

日期：2011-10-13 In a literal walk through time along the Ucayali River near Contamana, Peru, a team of researchers found rodent（啮齿动物） fossils at least 41 million years old -- by far the oldest on the South American continent. The remains -- teeth -- showed th... 阅读全文>>

日期：2011-10-13 Plants do not have eyes or legs, yet they are able to see and move toward and away from light. This ability, called phototropism（趋光性） , is controlled by a series of molecular-level signals between proteins inside and between plant cells. In a p... 阅读全文>>

日期：2011-10-13 An international team -- led by researchers at McMaster University and the University of Tubingen in Germany -- has sequenced the entire genome of the Black Death, one of the most devastating epidemics in human history. This marks the first time sci... 阅读全文>>

日期：2011-10-12 Environmental toxicants（有毒物） such as dioxins, PCBs, and pesticides can pose a risk for cardiovascular disease. For the first time a link has been demonstrated between atherosclerosis（动脉硬化） and levels of long-lived organic environmental to... 阅读全文>>

日期：2011-10-12 Physicists have predicted that under the influence of sufficiently high electric fields, liquid droplets（液滴） of certain materials will undergo solidification, forming crystallites at temperature and pressure conditions that correspond to liquid... 阅读全文>>

日期：2011-10-12 Use of folic acid（叶酸） supplements by women in Norway in the period 4 weeks before to 8 weeks after conception was associated with a reduced risk of the child having severe language delay at age 3 years, according to a study in the October 12 iss... 阅读全文>>

日期：2011-10-12 A long-held mantra（咒语） suggests that you can't change your family, the genes they pass on, or the effect of these genes. Now, an international team of scientists, led by researchers at McMaster and McGill universities, is attacking that belief.... 阅读全文>>

日期：2011-10-12 In a trial that included about 35,000 men, those who were randomized to receive daily supplementation with vitamin E had a significantly increased risk of prostate cancer, according to a study in the October 12 issue of JAMA. Lifetime risk of prosta... 阅读全文>>

日期：2011-10-11 They have been around since the dawn of time and are a model of evolutionary success: viruses. Viruses are extremely adaptable but they have a problem: They cannot reproduce, so they smuggle（走私，偷运） their genes into suitable host cells. In the... 阅读全文>>