Draft genome sequences of two individuals from Siberia dating to 24,000 and 17,000 years ago add to our understanding of Native American ancestry.

http://www.nytimes.com/2013/11/21/science/two-surprises-in-dna-of-boy-found-buried-in-siberia.html?smid=fb-nytimes&WT.z_sma=SC_2YO_20131120&_r=1&

http://www.nature.com/nature/journal/vaop/ncurrent/full/nature12736.html
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Laura