Study examines disparities in air pollution affecting American Indian communities: First study to shed light on ambient particulate matter in tribal lands across the U.S.
A new study at Columbia University Mailman School of Public Health highlights disparities in fine particulate matter (PM2.5) trends between American Indian (AI) and non-AI populated counties of the U.S. PM2.5 is one of several air pollutants regulated by the U.S. Environmental Protection Agency (EPA), with the current annual standard set at 12?g/m3. Downward trends […]
Iodine in desert dust destroys ozone: New study shows iodine from desert dust can decrease ozone air pollution but could prolong greenhouse gas lifetimes
When winds loft fine desert dust high into the atmosphere, iodine in that dust can trigger chemical reactions that destroy some air pollution, but also let greenhouse gases stick around longer. The finding, published today in the journal Science Advances, may force researchers to re-evaluate how particles from land can impact the chemistry of the […]