SALT LAKE CITY, Oct. 24, 2012 - Computer simulations provide new mathematical support for the "grandmother hypothesis" - a famous theory that humans evolved longer adult lifespans than apes because grandmothers helped feed their grandchildren.
"Grandmothering was the initial step toward making us who we are," says Kristen Hawkes, a distinguished professor of anthropology at the University of Utah and senior author of the new study published Oct. 24 by the British journal Proceedings of the Royal Society B.
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http://www.eurekalert.org/pub_releases/2012-10/uou-gmh101912.php