It had been thought that North and South America were populated in one large migratory wave from Siberia, but a new study published in Nature shows that there were probably three waves of migrants who became the Native Americans of North and South America, says The New York Times' Nicholas Wade.
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Researchers describe a way to share data while keeping it secure, Agence France Presse reports.
In Science this week: genetic mutations typically associated with esophageal cancer are common in older, healthy individuals, and more.
India's Council of Scientific and Industrial Research has a new director-general, according to ScienceInsider.
A new study links more than a hundred genes to autism spectrum disorder, Discover's D-brief blog reports.