During the most recent Ice Age, floods of an almost unimaginable size swept across northwestern North America, changing the face of the landscape, stoking one of the liveliest debates in the history of geology, and shaping the region's history and culture in surprising ways. In this first of three episodes, we'll explore western Montana, where the floods - and the study of them - began.
On this episode we continue our journey along the path of the Missoula Floods. Having encountered the giant lake that caused them, we now...
At the same time the first modern geologists and biologists were arguing about the meaning of the distant past, Victorian architects were engaging in...
In this first part of a two-episode series, we're headed to the Valley of Mexico to explore one of the world's greatest - and...