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Pieces of the Puzzle
¥Countries and cities around the world give a sense of what is possible:
¥In Copenhagen, 36% of commuters bike to work
¥Iran cut its rapid population growth rate from 4.2% in the early 1980s to 1.3% in 2006 through national literacy, health, and family planning programs
¥China has 27 million rooftop solar water heaters harnessing energy equal to the output of 49 coal-fired power plants
¥JapanÕs high-speed rail system moves hundreds of thousands of passengers each day, measuring delays in seconds
Photo Credit: iStockPhoto / Sander Nagel