![](https://webarchive.library.unt.edu/eot2008/20081106232307im_/http://nsf.gov/images/x.gif) News From the Field Chimps Dig Up Clues to Human Past?
![](https://webarchive.library.unt.edu/eot2008/20081106232307im_/http://nsf.gov/images/greenlineshort.jpg)
November 12, 2007
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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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Source University of California - San Diego
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