Q What's wrong with having an ozone air cleaner in our home? We have one and visitors told us it's dangerous. Is it? A Yes. Health experts do not recommend the use of ozone air cleaners in homes.

As the Environmental Protection Agency is preparing to reclassify nine Denver metro counties from "serious" to "severe" violators of federal ozone standards — a worse categorization for these areas to ...

With climate change, plastic pollution and a potential sixth mass extinction looming, humanity has made some incredible messes in the world. But when people, political factions and nations have pulled ...

How clean is Florida's air? A lot better than California's, according to a new report. Since 2000, the American Lung Association has examined the quality of air across the country in its annual "State ...