March 16, 2016
A long layover on the Bering land bridge
About 11,500 years ago, two infants were laid to rest side by side in a shallow grave 80 kilometers southeast of what is now Fairbanks, Alaska. …
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Beringia
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June 23, 2014
Message in a bottle gourd
Logan Kistler of Penn State University and colleagues analyzed DNA from bottle gourds collected at pre-Colombian archaeological sites throughout …
January 5, 2012
The thrill to drill in the chill
Nearly 3.6 million years ago, a large asteroid slammed into Earth in what is today northeastern Russia. Within minutes, the impact formed an …
January 5, 2012
Early results
Although our final results won’t begin to be published until early next year, our team met in May to review all the data we had collected so far. …