Discover what makes each US state unique in this ultimate pocket-sized guide to the amazing cultures, peoples, places, animals, landmarks, and history of each s

Find out about all 118 elements, the building blocks of matter that make up our entire universe, in this pocket-sized encyclopedia. Discover all the major eleme

Everything you ever wanted to know about Earth's oceans in easy-to-read e-guide. Nearly 97 percent of our planet's water is held in the vast oceans that teem wi

Discusses the different kinds of rocks and minerals, how they are formed, and their various uses.

Profiling nearly 200 types of rocks and minerals from volcanic rocks and granite to sparkling diamonds and explosive sulfur, DK's Pocket Genius: Rocks and Miner