Add Yahoo as a preferred source to see more of our stories on Google. What do our imagined vision of aliens tell us about ourselves?James Dittinger/Syfy/Everett Collection/picture alliance What ...

Elon Musk has set his sights on something that sounds like it belongs in a sci-fi blockbuster: turning humanity into an 'alien society'. The world's richest man often makes bold claims, but his latest ...