Lips are made of very sensitive tissue and, because we use our mouths constantly, are over-exposed to harsh environmental factors.
Chameleons are nature's mood ring; their color reflects how they're feeling.
Scientists have found another reason why modern tomatoes have little or no taste. It's in their genes.
What makes some fall leaf displays so gorgeous? Learn what changes leaf colors.
It waddles around, covers itself with mud, and eats plants. Bor-ing. However, hippos are a lot cooler than we normally allow. In fact, hippos never sweat.
Do red, fall leaves act as a sunscreen? Find out on this Moment of Science.