Some wolf puppies will unexpectedly play "fetch," researchers say, showing that an urge to retrieve a ball might be an ancient wolf trait, and not a result of dog domestication.
A U.S. astronaut set a record Saturday for the longest single spaceflight by a woman, breaking the old mark of 288 days with about two months left in her mission.
After a flawless launch from Cape Canaveral, Fla., the crew capsule, loaded with 600 pounds of cargo for the station, was unable to reach its intended orbit, Boeing says.
Among the findings are a gold pendant with the image of an Egyptian goddess, suggesting wider interaction between ancient Greece and Egypt than previously known.