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Boulder Mayor Mark Ruzzin said skeptics often ask why global warming must be a local priority. He responds by acknowledging the obvious: "Even if Boulder could somehow wish away all of our greenhouse gas emissions, that wouldn't be a drop in the bucket. It would be a drop within a drop."
Then he said the city must try anyway -- if only to prove to larger communities that they, too, can reduce pollutants without spending huge sums or slowing economic growth.
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Denver plans to plant an average of 140 trees a day for the next 20 years, while Los Angeles is replacing its famed fan palms with leafy sycamores and oaks. Chicago encourages the planting of lush rooftop gardens, which cool buildings, reducing the need for air conditioning.
Fargo acts on climate change more directly by trapping the methane that normally wafts out of its landfill as a byproduct of rotting garbage. The methane -- a potent greenhouse gas -- is then sold to a soybean processing plant, which uses it in its boilers.
"All these cities are like little laboratories, experimenting with what works. Then we learn from each other," Brainard said.
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Determined to prove him wrong, Nickels challenged his fellow mayors to adopt Kyoto's targets at the local level. He has received at least 330 pledges from mayors representing 54 million people. All have vowed to reduce their cities' emissions below 1990 levels within the next several years.
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http://www.boston.com/news/nation/articles/2006/12/25/cities_towns_step_up_global_warming_fight/