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 nat...
Global food demand could double by 2050, according to a new projection by David Tilman, Regents Professor of Ecology in the University of Minnesota...
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 l...
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 ...
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 sa...
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 ...
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 rep...
Scientists at Chalmers have succeeded in creating light from vacuum（真空） -- observing an effect first predicted over 40 years ago. In an innovative exp...
In the fast-paced world of health care, doctors are often pressed for time during patient visits. Researchers at the University of Missouri developed ...
Researchers the world over are seeking reliable ways to predict earthquakes, focusing on identifying seismic（地震的） precursors that, if detected early e...