Out of Thin Air: A Story of Big Trees

Ranger Eileen explains to park visitors how and why Sequoia trees grow. She covers nitrogen, oxygen, hydrogen and carbon, the purpose of leaves and the layers within a tree trunk. The book is aimed at elementary through middle schoolers with clear bright full page illustrations opposite each page of text. "Giant Sequoias are unique and special inhabitants of the Sierra Nevada mountains from Sequoia National Park, Yosemite National Park, Calaveras Big Trees State Park and beyond. Out of Thin Air is an excellent introduction to the important role trees have to earth and to the global ecosystem of the planet."?- Mary Anne Carlton, M.A., Park Ranger, Sequoia National Park