Lost DNA provides keys to human anatomy and a new way to study evolution

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http://chronicle.com/article/How-Our-Brains-Got-BigOur/128878/?sid=at&utm_source=at&utm_medium=en

The human skull (left) houses a brain that's three to four times the size of a chimpanzee's (right). Scientists have spotted a stretch of DNA that could have prompted this expansion.

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