[The accords are voluntary but include firm targets-like increasing renewable energy use to 10 percent within seven years, and reducing per capita water consumption by 10 percent by 2015. Generation Earth, a nonprofit group that worked with ICLEI and U.N. officials to organize the summit, will regularly grade each city's effort to meet the accords.] There is tremendous power in targets and timetables, ... Even if the same person isn't there, if you set a goal of 10 percent renewable power within seven years, you can check and see if they've achieved it.
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