Dan Green

Mixes science and art to bring the world of geology to life, with wacky characters to explain the things that form the foundations of our planet including rocks, gems, crystals, fossils, and more.

Profiles the presidents of the United States, from George Washington to Barack Obama, and includes facts and trivia about each president, including major achievements and personality quirks.

Uses cartoon-style characters and everyday situations to explain the different layers of the ocean, the plants and animals that live there, and how pollution is affecting the world's oceans.

"Get to know the universe on a different scale entirely and meet the characters that hold it all together!"--Page 4 of cover.

"Imagine chemistry as a community of dynamic characters, each with its own personality. This book is your essential guide to the explosive guys who fizz, react, and combine to make up everything around us" -- p. [4] of cover.

A visual guide that examines the characteristics and significance of the elements of the periodic table, and explores uses for the elements.

Presents brief explanations of inventions used in our everyday modern lives.

The Rock and Gem Book is packed full of photos of natural wonders, including rocks, minerals, gems, shells and fossils. This children's encyclopedia displays more than 1,200 full-color specimens, from sapphires and rubies to silver and pearl, revealing the unique qualities of each material and how it is used in industry, architecture, art and science. Including precious metals, rare fossils, tiny gemstones and giant shells, the Rock and Gem Book gives...