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Life & Evolution

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mosquito wing rotation

BIZARRE BUZZ  High-speed video and computer modeling detail forces involved in mosquitoes’ wing rotation that help the insects generate enough lift (lines indicate air flow) to support their body weight in the air.

guppies

LIKES FLASHY GUYS  Brain size in a female guppy (left) turns out to affect her taste in males. Bigger brains go with a preference for a colorful guy (right) instead of some dim dud.

new dino evolutionary tree

NEW WAY TO RELATE  The dinosaur evolutionary tree just got a makeover. One outcome of the proposed rearrangement is that meat-eating evolved twice in dinosaurs (in groups represented by Tyrannosaurus rex, bottom middle, and Staurikosaurus, right), as did traits associated with plant-eating (groups represented by Brontosaurus, left, and Triceratops, top middle). 

Life & Evolution

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