The way humans are living in the 21st century isn't well matched to the way we're built.Geneticist and anthropologist Spencer Wells traces the long history of humans by gathering DNA samples and looking for the demarcations of change back in a family tree.
In his study of the long view of humanity Wells has learned that for most of our species's existence we lived in small groups and hunted or gathered our food. About ten thousand years ago something happened: farming. Wells suggests that although the practice of cultivating crops helped humans succeed as far as building up numbers, the shift in to this common practice of survival is having consequences that we are just encountering today.
LISTEN: SPENCER WELLS - PANDORA'S SEED
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