Another reason to eat your fruits and vegetables: Recent research shows that small doses of the toxins naturally found in plants can boost our immune systems, protect against brain disease and help us live longer. We look at the toxins in plants and other anti-aging insights.
A Harvard professor explores the idea that humans are born with an innate sense of morality.
- Marc Hauser Professor of Psychology, Organismic and Evolutionary Biology, and Biological Anthropology at Harvard University and author of "Wild Minds."
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