Life & Evolution

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walking chimp

DO THE TWIST  Chimps walk on two legs with surprising flexibility, rotating their upper bodies much as people do when walking, a new study finds. Researchers say this discovery supports the view that hominids walked in a humanlike way more than 3 million years ago.

prairie voles

PAIR-BOND  Just 24 hours in each other's company without mating can be enough to bond a pair of prairie voles for life.

pitcher plant Nepenthes gracilis

The lower lid of the pitcher plant Nepenthes gracilis secretes nectar that attracts unsuspecting insects. In the rain, the lid becomes a spring-loaded death trap. 

Life & Evolution

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