Colorado's Fight Against Ozone Heated Up This Summer
Welcome to summer in Denver: hot days, cool nights and electronic billboards advertising ozone action alerts (like the one currently in effect), ur...
Welcome to summer in Denver: hot days, cool nights and electronic billboards advertising ozone action alerts (like the one currently in effect), urging people to combine car trips and carpool if possible. Ozone is a secondary pollutant that forms when other pollutants — primarily volatile organic compounds and nitrogen oxide — mix with heat and sun, which is why these alerts are prevalent during the summer months. Since nitrogen oxide comes out of car tailpipes, cutting back on automobile travel can cut back on ozone.