Three environmental groups today are launching an $11 million-dollar “public education” campaign in the U.S. about the health dangers and physical costs of climate change, with the aim of putting the environment on voters’ minds before the 2000 elections and putting the heat on Congress for its lack of action on the issue. The groups — National Environmental Trust, Physicians for Social Responsibility, and the Union of Concerned Scientists — will air three 30-second ads on 200 television stations across the country, an environmental ad campaign of unprecedented scope. Media mogul Ted Turner pitched in some of the funding for the campaign, as did a number of charitable foundations. The campaign will also include a 36-city tour in the South and Midwest of exhibits on global warming.