Big Picture Science – Digging Our Past: Sera Young

by Gary Niederhoff on August 11, 2013

Digging Our Past: Sera Young
Part 4 of Digging Our Past, featuring Sera Young, research scientist, division of Nutritional Sciences, Cornell University, and author of Craving Earth: Understanding Pica—the Urge to Eat Clay, Starch, Ice, and Chalk.
(TRT 11:08)

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