EPA plans limits on airline emissions

Jet-engine exhaust from airliners endangers human health and adds to climate change, the government said Monday in taking the first step toward regulating those emissions. The Environmental Protection Agency said it will use its authority under the Clean Air Act to impose limits on aircraft emissions. Jet engines spew greenhouse gases that trap heat from the sun. But proposed rules such as imposing fuel-efficiency standards have faced stiff opposition from aircraft makers and commercial airlines. The EPA’s findings do not apply to small piston-engine planes or to military aircraft.