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Why do we crave love so much, even to the point that we would die for it? To learn more about our very real, very physical need for romantic love, Helen Fisher and her research team took MRIs of people in love -- and ...
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Christopher Ryan argues that we are hardwired to crave novelty, which leads to infidelity in marriages. Ryan says the way that culture responds to this "natural behavior" causes more problems than it solves. In other ...
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A conversation with the biological anthropologist and Rutgers University professor.