Stephen Hawking spent decades warning that humanity faces a simple choice: spread beyond Earth or risk total extinction. The ...

Diagnosed with a devastating illness in his early twenties, Stephen Hawking was told there was little that could be done. For a time, he believed he might not live long enough to finish his PhD. But ...

Stephen Hawking used his fame to warn humanity about its potential — and rapidly approaching — end. He provided a possible solution, but just how viable is it?

LONDON (AP) - Stephen Hawking spoke from beyond the grave Monday to warn the world that science and education are under threat around the world. The words of the scientist, who died in March at 76, ...