Eyeless, colorless fish inhabit the rivers running through caverns beneath the eastern and southern United States. Who needs ...

Animals can evolve separately but end up evolving toward other species, too, or even spontaneously evolve the same ...

The creature is the hummingbird hawk-moth, and the phenomenon is called convergent evolution. Read on to learn more about both. What Is Convergent Evolution?

But convergent evolution becomes something useful when we think of it as a kind of natural experiment. The size of primate testicles gives us a classic example.

A study published in Nature Ecology & Evolution reveals a surprising evolutionary insight: sometimes, losing genes rather ...

It was thanks to the multiple observations provided by convergent evolution that we were able to discover this consistent correlation between testicle size and sex life right across the mammals. And ...