Add Yahoo as a preferred source to see more of our stories on Google. strawberry poison dart frog on a leaf Nature comes in a variety of striking colors, but all that beauty didn't evolve for our ...

A recent study finds that color vision evolved in animals more than 100 million years before the emergence of colorful fruits and flowers. And there has been a dramatic explosion of color signals in ...

Bold hues of red, orange, yellow, blue and purple help plants and animals communicate with their own species and others in their efforts to survive. Vivid orange dart frogs warn predators of their ...