Nature

A group of fish called gar, dubbed “living fossils,” may have the slowest rate of evolution of any jawed vertebrate.

In the trees, through the water, and under the dirt: Snakes evolve faster than their lizard relatives, allowing them to occupy diverse niches.

In Kenya, the new species pushed out ants that protected acacia trees. That had cascading effects for elephants, zebras, lions, and buffalo.

Despite their reputation as super-smellers, sharks don’t have a better sense of smell than other fish. One researcher investigates.

Researchers found that a specific number and symmetry of certain feathers can indicate whether a bird (or dinosaur) could fly.