Keeping astronauts strong and healthy in microgravity is no easy feat. Those serving six-month missions aboard the International Space Station must exercise for two hours per day to stave off muscle ...

The humans who move to Mars might not remain "human" for very long. Evolution is a powerful force, transcending planetary boundaries. As Rice University biologist Scott Solomon points out in his ...

Elon Musk wants robots working in the world. That’s the vision he sold investors: millions of humanoid bots, doing everything from factory shifts to folding your socks, and eventually helping humans ...