Human testicles are much smaller, in proportion, to some of our primate cousins. Evolution can tell us why. But the size of ...

It's not easy to look at a sea spider and see an animal so representative of its kind that it may help scientists sort out ...

What can a tiny wasp with a rather gruesome parasitic life cycle teach us about evolution, behavior and human developmental ...

A new breakdown of earthworm DNA could help us better understand how evolution works, and it could prove Darwin completely ...

For thousands of years, humans have selectively bred dogs to fulfill specific roles, ranging from guarding and hunting to ...

Worms radically reorganized their genomes during their move from sea to land, supporting the theory of punctuated equilibrium ...

As the climate warms, many species are shifting northward into areas that were previously too cold for them. A study, ...

The new species has been found in two small isolated waterways in Brazil’s Atlantic Forest, according to a study.