We talked about this a little last week. The answer is 'yes.' Air pollution can make us stupid-er.

In the first study of its kind, U.S. researchers have found a link between pregnant women being exposed to air pollution and lower IQs of their children.

"This is a warning bell," said the lead author of the study, Frederica Perera, director of the Columbia Center for Children's Environmental Health in New York.

More from Canada's The Globe and Mail.

Looking for a quick fix? Don't hold your breath.