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For years I’ve been asked, “Since you wrote Diet for a Small Planet in 1971, have things gotten better or worse?” Hoping I don’t sound glib, my response is always the same: “Both.” As food growers, sellers and eaters, we’re moving in two directions at once. The number of hungry people has soared to nearly 1 billion, despite strong global harvests. And for even more people, sustenance has become a health hazard-with the US diet implicated in four out of our top ten deadly diseases. Power over soil, seeds and food sales is ever more tightly held, and farmland in the global South is being snatched away from indigenous people by speculators set to profit on climbing food prices. Just four companies control at least three-quarters of international grain trade; and in the United States, by 2000, just ten corporations-with boards totaling only 138 people-had come to account for half of US food and beverage sales. Conditions for American farmworkers remain so horrific that seven Florida growers have been convicted of slavery involving more than 1,000 workers. Life expectancy of US farmworkers is forty-nine years.

That’s one current. It’s antidemocratic and deadly.

There is, however, another current, which is democratizing power and aligning farming with nature’s genius. Many call it simply “the global food movement.” In the United States it’s building on the courage of truth tellers from Upton Sinclair to Rachel Carson, and worldwide it has been gaining energy and breadth for at least four decades.

Some Americans see the food movement as “nice” but peripheral-a middle-class preoccupation with farmers’ markets, community gardens and healthy school lunches. But no, I’ll argue here. It is at heart revolutionary, with some of the world’s poorest people in the lead, from Florida farmworkers to Indian villagers. It has the potential to transform not just the way we eat but the way we understand our world, including ourselves. And that vast power is just beginning to erupt.