How To Survive The End of the World

Is a zombie apocalypse fiction, or could an infectious disease turn mankind into brutal beasts?

Imagine: Earth is directly hit by a primordial black hole--and survives.

What if earth was pulled into space? Could we survive? Or would the new Ice Age freeze us out?

What might happen if the earth's delicate environment balance is thrown off kilter?

Do amazing breakthroughs in technology bring terrifying new levels of danger to humanity?

National Geographic explores the effects of flash floods and rising sea levels on global populations.