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From Days Before Time: Early Inhabitants of North America
04:46

From Days Before Time: Early Inhabitants of North America

Long before Europeans venture out into the waters of the Atlantic to see what lay beyond the boundaries of their continent; tribes of Native Americans inhabit the land now known as North America. At first the animals and plants of the land provide t...

Stress: Portrait of a Killer
55:36

Stress: Portrait of a Killer

Over the last three decades, science has been advancing the understanding of stress-how it impacts the human body and how social standing can make a person more or less susceptible. Through studies of baboons on the plains of Africa and research in ...

Understanding Hookup Culture: What's Really Happening On College Campuses
29:56

Understanding Hookup Culture: What's Really Happening On College Campuses

When it comes to intimacy and sex, young people today are apparently doing away with the old rules of romance and cutting straight to the chase. If recent reports are to be believed, the rise of hookup culture on college campuses is in the process o...