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Teeth may be an important new resource for understanding the lives of our extinct relatives, said Daniel Green, a postdoctoral fellow at the Forsyth Institute, an affiliate of Harvard Dental School of Medicine.

Reading teeth

Study uses rings in teeth to understand the environment Neanderthals faced



Two decades ago, Harvard Professor S. Allen Counter discovered that the South American Quechua Indians were exposed to astronomically high levels of lead and other toxic metals.

A hidden risk

Mothers can pass toxic metals to children through breast milk, study shows