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Chimps Will Share Their Lunchbut Only If They Like You

Chimps Will Share Their Lunchbut Only If They Like You

Chimpanzees have a lot to gain from climbing the social ladder. It now appears that lower-ranking male chimps strengthen bonds with their friends in high places by alerting them to some good eats.

December 20, 2013 — Cynthia McKelvey

Why Is Yawning Contagious? [Video]

Contagious yawning can be annoying, but it might also be a sign of good social skills. It’s a type of emotional contagion, a phenomenon in which we tend to share the feelings of people around us.

October 24, 2013 — Eric R. Olson

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