Air pollution ‘kills 7 million people a year’ kills 7 million people per year Air pollution ‘kills 7 million people a year’ Air pollution ‘kills 7 million people a year’ kills 7 million people each year Guardian Air pollution ‘kills 7 million people a year’ Air pollution ‘kills 7 million people a year’ Air pollution ‘kills 7 million people a year’ Air pollution ‘kills 7 million people a year’ Air pollution ‘kills 7 million people a year’ Air pollution ‘kills 7 million people a year’ Air pollution ‘kills 7 million people a year’ Air pollution ‘kills 7 million people a year’ http://www.thegua...e-a-year kills 7 million people per year Air pollution ‘kills 7 million people a year’ Air pollution ‘kills 7 million people a year’ Air pollution ‘kills 7 million people a year’ Air pollution ‘kills 7 million people a year’ kills 7 million people each year report at The Guardian. report at The Guardian. The Guardian Air pollution ‘kills 7 million people a year’