Dan Green

Most of us take for granted the features of our modern society, from air travel and telecommunications to literacy and obesity. Yet for nearly all of its six million years of existence, human society had none of these things. While the gulf that divides us from our primitive ancestors may seem unbridgeably wide, we can glimpse much of our former lifestyle in those largely traditional societies still or recently in existence. Societies like those of...

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...

Provides a guide to more than 100 elements that makes up the world. Also includes a companion digital book with extra activities.

Mixes science and art to bring the world of physics to life, with a gaggle of wacky characters to explain the building blocks of our universe.

"Each bio-buddy explains a complex area of science, taking your biological knowledge to a whole new level"--P. [4] of cover.

Profiles a variety of dinosaurs, including the iguanodon, parasaurolophus, and tyrannosaurus rex.

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.

Provides an illustrated look at hundreds of facts and figures about the world, from the farthest animal migrations and the fastest vehicles to the power of the human brain and the world's most deadly creatures.

"Learn how to draw 101 different animals! It's easy! Follow the simple step-by-step drawings and you will soon be amazing all your friends with your new-found artists' skills." - back cover