Biology / Bio 1831 · Atom · ~20 seconds
The Miller-Urey Experiment
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Stanley Miller and Harold Urey sparked a sealed mixture of gases meant to model early Earth's atmosphere, producing amino acids within days.
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Electrodes sparking the sealed flask model lightning, converting the gas mixture into organic compounds collected below.
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The exact gas mixture is now disputed as early Earth's actual atmosphere — the method, not that mixture, is the lasting result.