As the worms churn

As the worms churn

Burrowing animals mix soil and sediments, shaping the environment and scientists’ understanding of it

By Sid Perkins, 10:15 AM October 22, 2009

To celebrate the 200th anniversary of Charles Darwin’s birth, hordes of readers are reveling in On the Origin of Species, which sets forth the case for evolution via natural selection. Others are poring over The Voyage of the Beagle, the chronicle of Darwin’s five-year, round-the-world expedition.

It’s probably safe to say, however, that only die-hard Darwinistas are cracking the spine on his last book, The Formation of Vegetable Mould, Through the Action of Worms, with Observations on Their...

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