Daily Archives: December 14, 2006

Scientists have discovered an extinct animal the size of a small squirrel that lived in China at least 125 million years ago and soared among the trees. It is the earliest known example of gliding flight by mammals, and the … Continue reading →

In two studies, researchers in Kenya and Uganda enrolled thousands of uncircumcised men to determine if the procedure could reduce HIV transmission among heterosexuals, with some men having their foreskin removed and others remaining intact. The trial in Kenya, involving … Continue reading →