FORT PIERCE, Fla. – A video of two chimpanzees holding hands is capturing hearts all over the world. While the affectionate gesture is incredibly sweet to watch, the story behind the two chimpanzees ...
Humans are known to invent private hand gestures. Chimps in the wild do, too, a new study suggests. By Brandon Keim Parents and their children, or people who know each other well, often share some ...
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