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The Eagles take their eco-pride to City Hall.

Philadelphia Eagles

3. Philadelphia Eagles, NovaCare Complex. It seems only fitting that a stadium that sounds like a medical facility is proving to be a shot in the arm for greening operations everywhere. The Eagles launched an organization-wide program called Go Green in 2003, and today the team powers its facilities with clean energy, uses corn-plastic dishes and utensils, and encourages fans to offset their game-day travel. Offshoot projects include Eagles Forest in nearby Neshaminy State Park and a calendar of eco-babes — printed on recycled paper, of course.