View Full Version : Heat-Shocked Diamonds Provide New Clue of Horse-Killing Impact

2009-Jul-21, 07:00 PM
Archeologists have been divided about whether an extraterrestiral impact blasted North America about 12,900 years ago, wreaking havoc on Earth's surface and sending scores of species — including a pygmy mammoth and the horse — into oblivion. New clues from California's Channel Islands should put any doubt to rest, says an international team of researchers. (...)Read the [...]

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