Why can't you trust zoo animals to take tests? Too many cheetahs This laugh riot asks and answers a series of wacky riddles in full-page, fun-to-color illustrations. Adapted from highly successful eBooks by the popular children's author, this comical coloring book features a cast of fancifully rend[...]

Earth's climate has always varied, but it is now changing more rapidly than at any other time in recent centuries. The climate is very complex, and many factors play important roles in determining how it changes.Why is the climate changing? Could Earth be getting warmer by itself? Are people doing t[...]

Tropical rainforests are home to brilliantly colored birds and spider monkeys that swing like acrobats. Here, tiny tadpoles, lizards, and crabs live in sky-high penthouse mini-ponds formed in the leaves of rootless plants. The understory and forest floor swarm with insects, worms, frogs, toads, and [...]

Hiding on the floor of Earth's tropical oceans are magnificent and colorful coral reefs. You may have seen coral in the local aquarium or heard of the Great Barrier Reef off the coast of Australia. But did you know that coral reefs . . . are actually living beings? can grow to be larger than a skysc[...]