Scientists discover and name a colorful, new species of aquarium crayfish, Cherax pulverulentus, hiding in plain sight for decades.

The color red is not just for show; it has many practical uses in nature. It can convey warnings or danger, impress a mate, ...

While green isn’t an unusual color in nature, beautiful green animals are somewhat rare and exotic. Many green-colored animals, such as toads and various insects, have little to distinguish them ...