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 year...
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...
An international team -- led by researchers at McMaster University and the University of Tubingen in Germany -- has sequenced the entire genome of the...
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 demo...
Physicists have predicted that under the influence of sufficiently high electric fields, liquid droplets（液滴） of certain materials will undergo solidif...
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 th...
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 tea...
In a trial that included about 35,000 men, those who were randomized to receive daily supplementation with vitamin E had a significantly increased ris...
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...
Biologists have described only a few thousand different viruses so far, but a new study reveals a vast world of unseen viral diversity that exists rig...