Reuters: The U.S. Environmental Protection Agency on Tuesday proposed a comprehensive U.S. system for reporting emissions of carbon dioxide and other greenhouse gases, a step toward regulating pollutants that spur climate change. The new plan for a carbon registry would affect fossil fuel suppliers, automakers and companies that emit at least 25,000 metric tons of greenhouse gases a year, the EPA said in a statement. The U.S. government already has statistics on emissions from …