Until now, environmentalists had favored the arena measure because it focused the sports complex development in an urban area.
Some environmentalists, who support measures to increase public transportation options, also favored the plan, which they said would take pressure off the highway system.
Some environmentalists object to sending more people and machines into an already disturbed ecosystem, and favor a "let burn" policy.
Most environmentalists favor recycling over degradation, although at the same time many deplore the shift to plastic containers from glass and aluminum, which are already heavily recycled.
Though environmentalists and some leading Republicans as well favor more aggressive steps to raise auto efficiency, the 29-to-3 vote today is a rare defeat for the auto industry.
Many environmentalists favor it.
Not all environmentalists favor ending logging.
Some political leaders (and many environmentalists) favored tram service.
This would tax each form of energy on the basis of its carbon content or the pollution it emits, a step many environmentalists favor.
Some environmentalists favor storing spent nuclear fuel on reactor sites because shipping the waste creates even more hazards, they say.