In 1953, a 23-year-old graduate student named Stanley Miller filled a glass flask with methane, ammonia, and water vapor, ran electricity through it for a week, and produced the chemical building blocks of life — in a lab, from scratch. Nobody told him it would work. His advisor Harold Urey almost didn't let him try. This is the story of how a simple, almost reckless experiment cracked open one of science's oldest wounds: where did life actually come from?