Stanley Miller conducted a famous experiment in the 1950s. This experiment

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Stanley Miller's experiment used a mixture of gases (methane, ammonia, hydrogen, and water vapor) that were thought to represent the early Earth's atmosphere. He then subjected this mixture to electric sparks to simulate lightning, and after a week, he found that some organic molecules, including amino acids, had formed. This experiment provided evidence that organic molecules could be formed from non-organic starting materials, and possibly contributed to the origin of life on Earth.

Stanley Miller Conducted a Famous Experiment in the 1950s