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What may be the oldest-known Earth rock has turned up in a surprising place: the moon. Stanford geophysicist Norm Sleep explains why the moon is a good place to look for ancient Earth rocks.
Geophysics professor Norm Sleep discusses his recent Astrobiology paper describing how Earth’s ancient geology can be used to test theories about the evolution of life.
The dino-killing asteroid that crashed into the Yucatan Peninsula of Mexico could have generated massive seismic waves that triggered earthquakes as far away as Colorado, in a region where no previous fault existed,