Now,evidence is mounting that dirty air is bad for your brain as well.
Over the past decade,researchers have found that high levels of air pollution may damage children's cognitive abilities,increase adult is risk of cognitive decline and possibly even contribute to depression.
"This should be taken seriously," says Paul Mohai,PhD,a professor in the University of Michigan's School of Natural Resources and the Environment who has studied the link between air pollution and academic performance in children. "I don't think the issue has gotten the visibility it deserves.