News

Animals

Lemurs’ group size predicts social intelligence

Primates that live with many others know not to steal food when someone is watching.

Humans

Hard throwers evolved a long time ago

Baseball hurlers provide clues to the ancient roots of bodies that can heave objects really fast.

Health & Medicine

Paralyzed rats relearn to pee

Bladder control restored for the first time in animals with stark spinal cord damage.

Earth

Cleaner air may have brought more storms

Pollution during the 20th century appears to have suppressed North Atlantic hurricanes.

Particle Physics

First four-quark particle may have been spotted

If confirmed, the tetraquark could shed light on how atomic nuclei are held together.