Rare-metals mines and plastic refineries probably have pulp mills beat for environmental impact, but paper-making is still a nasty, nasty process, as anyone who has set foot in a mill town can attest by scent alone. Either way, the erosion of the DTB market by e-readers has to be a net gain, given the sheer weight of pulp being shipped back and forth, much of it never to be sold or read.
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