The American Lung Association’s latest State of the Air report concludes that even though Americans have changed their ways significantly over the last 50-plus years, the struggle to provide cleaner air is far from being won. The American Lung Association’s latest State of the Air report concludes that even though Americans have changed their ways significantly over the last 50-plus years, the struggle to provide cleaner air is far from being won. Environment Phys.org – latest science and technology news stories