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Life

Gene found that controls beak size in Darwin’s finches

A beak-size gene helped determine whether Darwin’s finches survived a drought.

Paleontology

Clearer picture emerging of dinosaurs’ last days

Dinosaurs’ final days may have included both a giant asteroid and gradual species die outs. Two new studies paint an increasingly intricate picture of dinosaur’s demise.

Neuroscience

Left brain stands guard while sleeping away from home

Part of the left hemisphere stands sentry while the rest of the brain and body snooze.

Health & Medicine

‘Dirty’ mice better than lab-raised mice for studying human disease

Dirtier mice may better mimic human immune reactions.