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“Did you know that more than 100 million trees’ worth of bulk mail arrive in American mail boxes each year - that’s the equivalent of deforesting the entire Rocky Mountain National Park every four months, according to New American Dream.”
EcoCycle in Boulder also has a helpful list of ways to try to slow the flood of junk mail. While, unfortunately, there is no one-stop-shop solution (not if advertisers have their say!), this is an informative list. Check it out here.