The Boatman gives readers a Thoreau for the Anthropocene epoch. As a backyard naturalist and river enthusiast, Thoreau was keenly aware of the way humans had altered the waterways and meadows of his beloved Concord River Valley. And he recognized that he himself--a land surveyor by trade--was as complicit in these transformations as the bankers, lawyers, builders, landowners, and elected officials who were his clients. Robert Thorson tells...