Nature comes in a variety of striking colors, but all that beauty didn't evolve for our enjoyment. Conspicuous colors tend to be signals, often helping animals woo mates or warn predators. Yet the ...

In nature, it's not uncommon to observe animals that change color with the seasons. You may have heard of the arctic fox or the mountain hare, which are white in winter and brown in summer. This ...

Daniel Hanley received funding from the National Geographic Society. Vera Vasas does not work for, consult, own shares in or receive funding from any company or organization that would benefit from ...