Roots Coming Home to Roost

Many years ago a couple of researchers (Hatley and Kappleman) suggested omnivory, including eating of roots, to be a common theme in the adaptations we see in bears, humans, and pigs. Some years later, Richard Wrangham and I independently and for different reasons came to the idea that roots are potentially important in human evolution, so we collaborated on a paper suggesting this. Subsequently, bits and pieces of data have been accumulating to support this hypothesis (the “root hypothesis”). And here, Jim Moore of San Diego, is reporting on living chimps eating roots in a relatively savanna like environment. As we predicted.

Chimps dig up clues to human past? from PhysOrg.com
One of the keys enabling the earliest human ancestors to trade a forest home for more open country may have been the ability to gather underground foods. Now a team of scientists reports for the first time that in Tanzania our closest living relatives, chimpanzees, are using sticks and pieces of bark to dig for edible roots, tubers and bulbs.[]

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