Human beings have been at the center of ecological change on Earth for thousands of years. But as history shows, no species ...

If humans were to die out tomorrow, how long would it take for nature to take over and overgrow most traces of our existence? After, like, 10,000 years, would you have to undertake an archaeological ...

In his wonderfully titled 2007 best-seller, The World Without Us, author Alan Weisman pondered what would happen to Earth without humans. If we were not around to maintain them, how soon would our ...

The idea of humans packing up and moving to another planet has been sold to us for decades as basically inevitable: Mars colonies, space cities, fresh starts somewhere with better views and fewer ...