Writer Adam Gopnik finds happiness in being 'vigilantly absorbed in some activity.'
Actor Chevy Chase and his wife Jayni share their story of how they met and fell in love.
Marc D. Hauser, author of the highly acclaimed book, Wild Minds, What Animals Really Think, talks about the rituals of human courtship.
Bob Shumaker, a former POW in Vietnam, describes how he and his fellow prisoners developed a social network that was crucial to their surviving three years in solitary confinement. They succeeded by creating a tap code that allowed them to communicate through their cell walls.
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