The fall of the world’s earliest cities has long looked like a riddle of vanished peoples and abandoned streets. A growing body of climate research now points to a simpler, starker driver: water, and ...

There is no polity more storied in the west than the Roman Empire, but could its fall have really been caused by its choice of plumbing material?

A series of lengthy droughts brought about the fall of the Indus Valley Civilization, a new study finds. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...