Scientific Tooth Fairies Investigate Neanderthal Breast-Feeding

Our closest relatives, chimpanzees and gorillas, breast-feed their offspring for several years. Some baby orangutans nurse until they are 7 years old. Researchers found a way to test ancient teeth for clues about when humans cut nursing short.

Source: http://www.npr.org/blogs/health/2013/05/21/185813855/Scientific-Tooth-Fairies-Investigate-Neanderthal-Breastfeeding?ft=1&f=1007

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