Edmonton Journal: A newly published study says air downwind from a cluster of petrochemical plants northeast of Edmonton contains pollutants at levels equal to some of the world's largest cities.
Other pollutants, including some known to cause cancer, also measured well above normal. And cancer rates linked to those chemicals were found to be higher in communities closest to the so-called Industrial Heartland.
Although scientists don't definitively link the two, one of the report's co-authors said the findings...