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The tsunami from outer space

Dr Iain Stewart discusses the tsunami waves that would have been caused by the huge asteroid impact that many experts believe killed off the dinosaurs 65 million years ago. An asteroid the size of San Francisco slammed into the sea just off Mexico's Yucatan Peninsula, leaving an impact crater 112 miles across and 20 times as deep as the Grand Canyon.

4 minutes

This clip is from

10 Things You Didn't Know About...Tsunamis

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