Cooking Fire

The control of fire and the cooking of food may be humanity's most transformative invention. Anthropologist Richard Wrangham's 'cooking hypothesis' proposes that cooking (beginning approximately 1.8 million years ago with Homo erectus) fundamentally changed human evolution — by predigesting food, cooking dramatically increased the calories extractable from the same amount of plant and animal matter, enabling smaller guts and larger brains. Raw food requires far more chewing and digestion energy — gorillas spend 6–7 hours chewing per day; humans spend 1 hour. The caloric surplus from cooked food freed energy for brain growth. Hearth sites also enabled social bonding — families gathered around fires for sharing food, stories, and protection. Cooking may be the invention that made us human.