In 1953, Harold Urey and Stanley Miller carried out an amazing experiment
in which they produced "molecules of life" from a mixture of
gases that they proposed existed in a primordial earth. The experiments
simulated what would happen when lightning strikes provided energy for
chemical reactions in the atmosphere and suggested a hypothesis for how
life might have developed on our planet. Amino acids were the vital
molecules that formed in this experiment and supported this hypothesis for
the origin of life.
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