Wander inside Infinity Tree and discover why trees are such incredible living things. Find out how trees grow, how they reach such amazing heights, and how some of them live for thousands of years. Learn about all the things we get from trees--from foods and fibers, to oils and medicines--and discover how they clean the air we breathe. Then explore the different types of forests, from the Arctic to the tropics, and see how they are faring in our fast-changing world. --Delve deeper into the mysteries of trees and take the challenge with the included computer game Infinity; The Quest. Test your skills and knowledge with this interactive game that leads you through seven challenging puzzle levels until you reach the ultimate goal--the secret forest. --The Infinity series delivers an absorbing, exhilarating learning experience that will capture the attention of even the most reluctant reader. These books present interesting facts and amusing trivia through photography, beautiful illustrations, and narratives. Interactive features, such as fold out posters, gatefolds, and flaps help readers experience significant things and events in a meaningful, hands-on way. The books are just the beginning