The EPA Is Set To Issue Rule Curbing A Dangerous Form Of Air Pollution

The EPA’s Clean Air Scientific Advisory Committee, a group of scientists that advise the agency, said in a letter last year that setting the standard below 70 ppb — and, ideally, as low as 60 ppb — would be the best move the agency could make for public health. Breathing in ozone can contribute to a range of health impacts, including, according to the letter, “decrease in lung function, increase in respiratory symptoms, and increase in airway inflammation.”...
http://thinkprogress.org/climate/2015/09/29/3706306/ozone-rule-coming-soon/