NOVA | Mystery of the Megaflood

Mystery of the Megaflood: What unleashed a catastrophic flood that scarred thousands of square miles in the American Northwest? Airs on PBS September 20, 2005

Fantastic Floods
In this interview, learn what megafloods can tell us about Mars, the nature of science, and more.

Ice Age Lake
What would Glacial Lake Missoula have looked like before its disastrous emptyings? Find out here.

Explore the Scablands
Examine the evidence left by the violent floods.

What on Earth Made This?
Try your hand at our gee-whiz geology quiz.

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