The chief lesson from a new article in this week's Science is, never, ever throw out out your samples. Most people are probably familiar with Stanley Miller's classic biochemistry experiment, in which he produced amino acids in a simulation of Earth's early atmosphere [PDF]. That experiment was groundbreaking, but since it was published in 1953 geochemsists have questioned whether it accurately reflected conditions on ancient Earth. But another of Miller's experimental results, which went unpublished until now, may be the response to that criticism.
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