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News Feature
Nature 447, 256-257 (17 May 2007) | doi:10.1038/447256a; Published online 16 May 2007
Archaeology: Blast in the past?
Rex Dalton1
- Rex Dalton is Nature's US West Coast correspondent.
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Abstract
A controversial new idea suggests that a big space rock exploded on or above North America at the end of the last ice age. Rex Dalton reports.
Around 13,000 years ago, North America was a busy place. Millennia of ice sheets had melted away, and humans crossed from Siberia to Alaska, spreading from the Canadian woods to the lush Carolina coastline.
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