Recall the prebiotic conditions on the early Earth (which I remind you of with this cartoon):

http://cmex-www.arc.nasa.gov/CMEX/data/Puzzle/Prebiot.htm

The kinds of conditions in Miller's experimental apparatus could be very similar to the environment on the prebiotic Earth ... maybe.

And as we will see, amino acids are a crucial piece of molecular biology.

This is all very suggestive.

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