San Antonio Spurs

Spurred to action.

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9. San Antonio Spurs, AT&T Center. It’s not the newest kid on the block, but that makes this arena’s greening efforts all the more impressive. The team recently upgraded its water system with the help of municipal funds, installing efficient fixtures and beginning to use recycled water in its cooling towers. Last year, team owners announced that they were buying wind power to cover 100 percent of their energy usage. And they’re pushing forward on other efforts, including recycling. Said Chairman and CEO Peter Holt, “We really want to be a model for arenas across the country regarding sensitivity to the environment.”