News

Paleontology

A flexible bone that helps mammals chew dates back to the Jurassic Period

A flexible bone that helps with chewing may have helped give rise to the Age of Mammals, a new fossil shows.

Genetics

This gene may help worms live longer, but not healthier

Antiaging therapies may have trade-offs, research on worms suggests.

Cosmology

Scientists still can’t agree on the universe’s expansion rate

A mismatch in measurements of how fast the universe is expanding might not be real, a study hints.

Astronomy

Gaps in gas disks around stars may not always mark newborn planets

New research has prompted a rethink of the theory that gaps in planet-forming disks around young stars mark spaces where planets are being created.