“Great civilizations are not murdered. Instead, they take their own lives.” The great historian Arnold Toynbee concluded this in his 12-volume magnum opus A Study of History. It was an exploration of ...

History loves a good mystery. And honestly, few things are more unsettling than an entire civilization, with millions of ...

Earthlings, brace yourselves: the galaxy may be emptier than your last Tinder date. According to a new study, any alien ...

Our search for extraterrestrial life has turned up empty, perhaps because technologically advanced civilizations are doomed ...