A report by the Natural Resources Defense Council finds that a warming climate could favor the formation of more ozone smog and production of allergenic pollen, a concern for allergy sufferers and asthmatics. The MacArthur-supported report shows that one in three Americans — 109 million people — are the most exposed to worsening respiratory allergies and asthma associated with climate change. The sources of air pollution also emit carbon that drives climate change, underscoring the need to reduce emissions to create better air quality conditions.
