Since the Industrial Revolution, we have been pumping our atmosphere full of pollutants.
Investing in clean energy, mandatory smog checks, and industrial improvements are making a difference.
With all of the positive strides, air quality still affects many people. It's particularly tricky for those with allergies and asthma.
Air pollution can be dictated by the topography of an area and by automobile traffic. The Pacific Northwest has cleaner air than Los Angeles. Droughts have led to a dustier time in the West, leaving more tiny particles in the air.
You can investigate the state of the air in your neighborhood at www.stateoftheair.org
Listen in as Dr. Norman Edelman discusses the findings in the 2016 State of the Air report.