News

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.

Cosmology

How to make gravitational waves ‘sing’

A rapidly spinning black hole would make a unique pattern of gravitational waves when it sucks in a smaller companion.

Humans

Pieces of Homo naledi story continue to puzzle

Researchers defend Homo naledi as a new hominid species and debate how it reached an underground cave.