Canadians breathe some of world's cleanest air: WHO

Canadians breathe some of world's cleanest air: WHO
http://www.canada.com/health/Canadians%20breathe%20some%20world%20cleanest/5458437/story.html

A new World Health Organization database on air quality places Canada as one of the world's top nations when it comes to clean air, but an expert says that despite this country's high scores, the air Canadians breathe will still cause health issues for thousands.