Sooty Moths

Funny, I was waffling on about natural selection and evolution to Caroline the other night (after watching a program about how plants altered Earth) and the example I chose was the peppered moth. Today I found myself reading an article on just that. It never occurred to me that the process went into reverse after the clean air act.
I have to add that this is one of the best current proofs of the theory of evolution/natural selection going.

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