In 2002, Xerox Corp. pledged to reduce its greenhouse-gas emissions 10 percent by 2012. With four years to go, the company has in fact reduced emissions by 18 percent, and has boosted its goal to 25 percent by 2012. Xerox says it saved $18 million last year through practices like increasing manufacturing efficiency and reducing employees’ job-related driving. Seems like a plan worth … wait for it … copying.