Sometimes I wonder if it is too much of an imposition on earthworms to push them into polluted ground, or to force-feed them a particular bacteria because we'd like to see it spread around. Darwin noticed that humans tend to exploit any characteristic for their own good, writing that "in the process of selection man almost invariably wishes to go to an extreme point." Are we taking advantage of earthworms? Shouldn't we clean up our own messes, or learn not to make them in the first place?

-Amy Stewart

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