Greener and Cleaner All the Time
Nearly all objective measures show the U.S. environment is improving
-Carbon monoxide emissions have dropped 14.9% since the U.S. began measuring in 1974.
-Nitrogen dioxides have dropped 33.8% since 1975.
-Volatile Organic Compounds (VOCs) that form smog
have dropped 24.4% since 1970.
-Sulfur dioxide in the air has been reduced by 54.5%
-Lead emissions have dropped by 97% since 1970.