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Old females decide when and where their tribe will travel.

Nala Rogers, Staff Writer

Evolutionary psychologist Gad Saad explains how the biological imperative to spread one's genes underlies our rituals of romantic love.

Nala Rogers, Staff Writer

Pesticide-treated bed nets trigger rapid evolution and resistance in one common species of sub-Saharan African mosquito, new study finds.

Nala Rogers, Staff Writer

Males have better spatial skills, but stubbornness holds them back on a simple task.

Nala Rogers, Staff Writer

A long-held explanation for the spectacular diversity of fishes turns out to be wrong.

Viviane Callier, Contributor

The process of evolution helped shape jellyfish to move through the water using almost no energy.

Karin Heineman, ISTV Executive Producer

Clues hidden in leaf fossils reveal shift to vegetation that smolders rather than flares.

Emily DeMarco, Staff Writer

Large brains used to be an advantage, then humans happened.

Charles Q. Choi, Contributor

In whales -- and in humans -- older females seem to offer a special benefit to groups.

Katharine Gammon, Contributor

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