Air quality has been horrible this year — and it's not just because of wildfire smoke
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Much of the United States has experienced horrible air quality this year due to the Canadian wildfires. It's not only particles from smoke creating pollution, but new research shows there's also an invisible pollution problem causing health concerns: Ozone. When ozone is up in the atmosphere, it filters out the sun's harmful ultraviolet rays. When it reaches the ground, it's not healthy for humans. According to the U.S. Environmental Protection Agency, ground-level ozone can cause coughing and a sore throat, make it more difficult to breathe deeply, and make the lungs more susceptible to infection. "It's the things that affect your bronchial lungs and asthma attacks is a key one, particularly in young children." said Dan Jaffe, an environmental chemistry professor at the University of Washington. Jaffe has been studying ozone pollution for 30 years. He said most of the time it comes from a chemical