WASHINGTON — The Environmental Protection Agency took a major step toward tougher reductions in greenhouse gas emissions from cars and trucks Tuesday by giving California the green light to impose new requirements that could become the national model for combatting tailpipe pollution linked to global warming.
The EPA granted California's long-standing request _ denied by the Bush administration _ for a waiver to allow it to pursue more stringent air pollution rules than required by the federal government. It cleared the...
]]>