In the latest episode, we learn what pushed them to move underground. It’s a supervolcanic explosion. And a tsunami. And perhaps the beginnings of nuclear war. And probably some other disasters ...

This prehistoric mega-storm was the greatest natural disaster in human history. 3-D computer animation will recreate what this lethal flood may have looked like.

Mega Disasters is an American documentary television series that originally aired from May 23, 2006 to July 2008 on The History Channel. Produced by Creative Differences, the program explores ...