Dec 03, 2002 — Keeping track of polluters in a country as large as Canada poses a serious challenge. Truckloads of hazardous waste cross the border with the U.S. every day. Logging companies work near protected wildlife. And smoke from factories fills the air. But the Canadian government has a new weapon in the fight against polluters. The Great Lakes Radio Consortium's Karen Kelly reports on Canada's growing team of environmental spies.