Life & Evolution

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Valerian plant

MOUNTAIN CLIMBER  Male valerian plants like this one have moved up in elevation in response to hotter, drier climate conditions. As a result, male-female plant ratios have changed since the late 1970s, researchers have found. This plant is growing in the research team’s highest study site, at 3,790 meters.


FREQUENT FLIER  Frigate birds, even juveniles like this one, can fly for months without stopping by riding air currents over the ocean.

banana fiddler crab

A male banana fiddler crab raises his large claw to try to lure a female to mate. A new study finds that some males take a more sinister approach to mating and trap females in their burrows.

Life & Evolution

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