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.
What does it mean to be a 21st-century American naturalist?
Astronomers measure how fast a black hole spins.
Museum scientists explore biofluorescent coral reefs.
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.
The concept of nothing is as old as zero itself.