Nature's Keepers: The Remarkable Story of How the Nature Conservancy Became the Largest Environmental Group in the World

With more than $3.7 billion in assets and annual revenue of $800 million, the Nature Conservancy has generated staggering growth that would be the envy of any business.

Incorporated in 1951 by a small circle of concerned ecologists, the Conservancy has grown financially into the world's largest environmental organization. It has one million members--up from 500,000 in 1990--and 3,500 employees operating in 50 states and 28 countries across the world.

Nature's Keepers offers readers an i...