More carbs in our diet helped harmful oral microbes to succeed.

Farmers in the Andes use biodiversity as insurance.

Astronomers measure how fast a black hole spins.

The Arctic’s frozen waters have entered a radically new state.

A new study identifies a likely ancestor to all placental mammals.

Scientists are using human ancestry to study modern diseases.

Bones reveal that ancient human relatives were part-time tree dwellers.

How a deep-drilling experiment is fighting climate change.

A river valley found on a distant moon resembles Earth’s Nile.

A short-nosed bat bests its nectar-drinking cousin at pollination.