Plentiful ice in the Saturn system hints at its age.
Diversity in algae-eating fish protects coral from toxic seaweed.
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.
Human ancestry informs the study of modern diseases.
Bones reveal that ancient human relatives were part-time tree dwellers.
How a deep-drilling experiment is fighting climate change.