Proceedings of the National Academy of Sciences

Facebook 'Likes' Revealing More Than Users IntendedClicking those friendly blue “like” buttons strewn across the Web may be doing more than marking you as a fan of Coca-Cola or Lady Gaga.
Stanford Study Traces Human Origins To Southern Africa‎Modern humans may have originated in southern Africa, where hunter-gatherer populations had the greatest genetic diversity, a team of Stanford University researchers said Tuesday.

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