1. Radio
 / Modified may 1, 2010 2:25 a.m.

NOVA scienceNOW

This episode looks at using new data from cave stalagmites and the Mississippi riverbed to understand how and why earthquakes strike in the heartland. Tuesday, September 1st at 9:00 p.m on PBS-HD. by Colleen Greer

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Len Schmitz

Included in this episode: the crucial role sleep plays in strengthening memories and facilitating learning; a profile of marine geologist Sang-Mook Lee; paleontologist Jonathan Bloch, who thinks that tiny bones embedded in limestone may be the evolutionary evidence of the creatures that evolved into primates.

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