Bolivia—Here in this small Andean nation of 10 million people, the glaciers are melting, threatening the water supply of the largest urban area in the country, El Alto and La Paz, with 3.5 million people living at altitudes over 10,000 feet. I flew from El Alto International, the world’s highest commercial airport, to the city of Cochabamba.

Bolivian President Evo Morales calls Cochabamba the heart of Bolivia. It was here, 10 years ago this month, that, as one observer put it, "the first rebellion of the 21st century” took place. In what was dubbed the Water Wars, people from around Bolivia converged on Cochabamba to overturn the privatization of the public water system. As Jim Shultz, founder of the Cochabamba-based Democracy Center, told me, “People like a good David-and-Goliath story, and the water revolt is David not just beating one Goliath, but three. We call them the three Bs: Bechtel, Banzer and the Bank." The World Bank, Shultz explained, coerced the Bolivian government, under President Hugo Banzer, who had ruled as a dictator in the 1970s, to privatize Cochabamba's water system. The multinational corporation Bechtel, the sole bidder, took control of the public water system.