Learn how increased protein diversity in signaling genes may have helped drive the shift from invertebrates to vertebrates, ...

The curious minds at What If see how humans might evolve to live underwater naturally, exploring gills, limbs, and sensory adaptation.

Grab your glasses for this one, because we’re talking animal eyes. Eyesight is one of the most important adaptations animals rely on for survival. As humans, we know how much we depend on our eyesight ...

Add Yahoo as a preferred source to see more of our stories on Google. Meerkats, as well as humans, are part of what researchers called a "premier league" of monogamy. - Martin Schutt/dpa/AFP/Getty ...