"Explains why the world's deserts are extreme environments and examines how gray foxes, rattlesnakes, and other animals have adapted to the harsh climates"--Provided by publisher.

"Explains why the world's deserts are extreme environments and examines how gray foxes, rattlesnakes, and other animals have adapted to the harsh climates"--Provided by publisher.

"Explains why the Arctic and Antarctic are extreme environments and examines how polar bears, penguins, and other animals have adapted to the cold"--Provided by publisher.

"Explains why the ocean depths are extreme environments and examines how leatherback turtles, giant squids, and other animals have adapted to the harsh conditions"--Provided by publisher.

"Explains why caves are extreme environments and examines how vampire bats, giant water bugs, and other animals have adapted to the harsh conditions"--Provided by publisher.

LIFE Magazine is the treasured photographic magazine that chronicled the 20th Century. It now lives on at LIFE.com, the largest, most amazing collection of professional photography on the internet. Users can browse, search and view photos of today’s people and events. They have free access to share, print and post images for personal use.

Boys' Life is the official youth magazine for the Boy Scouts of America. Published since 1911, it contains a proven mix of news, nature, sports, history, fiction, science, comics, and Scouting.

The rare treasure of a desert river rises in Sonora, Mexico to flow into the state of Arizona. Known as the San Pedro, its story is phenomenal. The river and its watershed have become a Mecca for birdwatchers from all over the globe. The forests lining the river's banks and the mountains that flank its valleys are home to an astounding array of unique plants and animals. Within these pages, the land and its life are unveiled in a very uncommon way-through the eyes of an acclaimed naturalist whose knowledge has come directly from thousands of miles of walking in the American West and a lifelong study of the natural world. "The Life of the San Pedro" reveals an incredible landscape, a part of North America that is beyond comparison.