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Evolution

Decades of observation and research suggest zebras may use their stripes for temperature regulation, among other functions.

Joshua Learn, Contributor

Female convict cichlid fish turned from optimists to pessimists when separated from their chosen partners.

Nala Rogers, Staff Writer

New study reveals how baby hoatzin birds are able to move like four-legged animals, thanks to unique claws on their wings.

Nala Rogers, Staff Writer

Scientists observe intense matchmaking behaviors from bonobo mothers on behalf of their sons.

Charles Q. Choi, Contributor

Newly defined species that lived 90 million years ago represents a chimera -- or even the crab family's platypus, researchers say.

Charles Q. Choi, Contributor

Some male animals may evolve weak immune responses so they can give their mates diseases.

Nala Rogers, Staff Writer

Newly-discovered fossil deposit contains more than 50 unknown species from the Cambrian Explosion, when most complex body plans appeared.

Charles Q. Choi, Contributor

Indoor temperature and moisture in the U.S. is closer to climates in Africa than to anywhere else on Earth.

Nala Rogers, Staff Writer

When the foraging sea mammals crack shells to collect food, they produce distinctive evidence.

Thomas Garlinghouse, Contributor

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