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Unhealthy ozone days could increase by more than a week in coming decades

If emission rates continue unchecked, regions of the United States could experience between three and nine additional days per year of unhealthy ozone levels by 2050, according to a new study from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) published in Geophysical Research Letters. “In the coming decades, global climate change will likely cause more heat …