Associated Press: California air regulators on Thursday released the country’s most sweeping global warming plan, outlining ambitious measures for cleaner cars, renewable energy and a cap on major polluters. The 75-page draft outlines for the first time how regulators expect to achieve cuts in greenhouse gases mandated under the landmark global warming law signed by Gov. Arnold Schwarzenegger two years ago. “This is by far the most significant step yet in California’s effort to fill the …