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A brilliantly simple way to remind people how easy it is to be a little more eco-conscious -- the graphic is free, with no licensing limitation, so just grab it and go make a difference. Easy-peasy.

It's estimated that 97 billion e-mails whisk through cyberspace every day. And according to GreenPrint Technologies, despite 20th century predictions of a paperless office, Americans use enough sheets every year to build a 10-foot-high wall that would stretch from New York to Tokyo and beyond.