Friday, October 13, 2017

Gene study shows human skin tone has varied for 900,000 years

Gene study shows human skin tone has varied for 900,000 years: An analysis of genetic variation and skin pigmentation suggests that some particularly dark skin tones evolved relatively recently from paler genetic variants
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What happened to all the American Chestnuts?

 The American Chestnut Insect Ecology Series What happened to the Insects that feed on them? Every species is connected in an ecosystem. The...