Neuroscientists have uncovered new insights into a key evolutionary question: Why can humans talk when most animals can't?

Add Yahoo as a preferred source to see more of our stories on Google. An aerial image of the elephant seal colony at St. Andrew's Bay, one of the largest populations of southern elephant seals on ...

For the last year and a half, Americans have watched and worried as H5N1 bird flu racked dairy herds and killed hundreds of millions of commercially raised chickens, turkeys and ducks. But far less ...