In this 4.4-million-year-old skeleton, scientists may have found the missing step between climbing and walking.

An independent U.N. investigator again took world nations to task Tuesday for not standing up to the U.S. over sanctions it ...

X’s Neo wants to be your housekeeper. First, it needs to be controlled by a human in your home. Cool with you?

Bill Gates thinks climate change is a serious problem but it won't be the end of civilization. He thinks scientific ...

Research groups around the world are working to find ways to implant or grow real biological teeth in a human jaw.