Bill Bradley made a bid for the environmental vote last night during a speech to the League of Conservation Voters, seizing on a set of issues prized by Al Gore, his rival for the Democratic presidential nomination. Bradley said he wants to lead an administration that truly reduces air pollution rather than just talks about it, and he voiced support for protecting wilderness and fragile coastal areas and helping developing nations tackle their environmental problems. Meanwhile, a coalition of 44 local and national enviro and health groups blamed GOP presidential frontrunner George W. Bush yesterday for an “air quality crisis” in Texas. Two weeks ago, Houston, the state’s largest city, edged ahead of Los Angeles as the nation’s dirtiest metropolitan area.