Kathryn Lasky 
Most Beautiful Roof in the World 
Exploring the Rainforest Canopy

Journey along with Dr. Meg Lowman, a scientist who, with the help of slings, suspended walkways, and mountain-climbing equipment, has managed to ascend into one of our planets least accessible and most fascinating ecosystems–the rain-forest canopy. Fresh in outlook and intriguing in details, this book will strengthen any library collection on the rainforest.–Booklist