George Schaller's Eco Crusade

The naturalist is leading the charge to protect species

In the remote Chang Tang plateau of northern Tibet, a few hardy nomads and thousands of antelope, yak, and wild asses roam. With its subzero temperatures and almost year-round snow cover, the starkly beautiful plateau is one of the world's last untouched wildernesses--and, at 125,000 square miles, one of the largest. But commercial interests are coming even to this distant, forbidding place. And the Chang Tang, and its way of life, might not survive.

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