@Revkin tweets related to: Photo, Images, Green, History, American

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Staggering image from "A Fierce Green Fire" film, on history of American environmentalism. The photograph shows a large pile of bison skulls at the Michigan Carbon Works in Detroit in the late 1800s. Settlers scoured the Great Plains for bison bones, which were sent east as a source of bone charcoal, a valuable pigment.
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Photo: Staggering image from "A Fierce Green Fire" film, on history of American environmentalism. The... http://t.co/TiNmSNSUKK

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