The rise of Homo sapiens is usually attributed to technology or economics, but there is a more fundamental driver: food. In the past five centuries, the necessity of feeding growing populations has spurred exploration, colonialism, slavery, and capitalism. A century ago, food was industrialized, and new styles of agriculture and production have written a new chapter of human history, one that's driving both climate change and global health crises. Offering a panoramic view, Mark Bittman explains how we can rescue ourselves from the modern wrong turn.