How Wheat Built the World

Humanity did not simply domesticate wheat—wheat may have domesticated humanity. Beginning with a scraggly wild grass in the Fertile Crescent 12,000 years ago, this episode reveals how one extraordinary trait—its ability to be stored through winter—persuaded nomadic people to settle, cultivate fields, defend granaries, and surrender their freedom of movement for a more reliable supply of food. Follow wheat from Egypt’s grain-based economy and Rome’s precarious imperial supply lines through feudal mills, famine, revolution, colonial expansion, the Dust Bowl, and Norman Borlaug’s lifesaving Green Revolution. Today this single grass supplies roughly one-fifth of humanity’s calories, yet depends upon vulnerable monocultures, intensive irrigation, synthetic fertilizer, global shipping, and an increasingly unstable climate. After building civilization around wheat, who has really been in charge?