The pigskin may be brown, but game day is going green. When the stadium lights flick on in Miami Feb. 4 for Super Bowl XLI, the world's most ballyhooed kickoff will be carbon neutral. In the past, the NFL has sponsored tree plantings to offset the hundreds of tons of greenhouse gases emitted during the event--from stadium lights and other fuel burners, like the buses that shuttle spectators around town. This year the league is partnering with alternative-energy provider Sterling Planet to use renewable-energy certificates (RECs) to promote the use of nonpolluting power sources. Lowering emissions, rather than simply offsetting them,...
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