About 40% of nitrogen oxides come from transport (cars, trucks, buses, and trains), about 25% from thermoelectric generating stations, and the balance from other industrial, commercial, and residential combustion processes.

More than 80% of all Canadians live in areas with high acid rain-related pollution levels.

It has been estimated that about 50% of the sulphate deposited in Canada is derived from sources in the U.S.

Readings of pH 2.4 as acidic as vinegar were recorded during storms in New England. During one particularly acid summer storm, rain falling on a lime-green automobile leached away the yellow in the green paint, leaving blue raindrop -shaped spots on the car.

The "safe" level of mercury in food has been set at about 0.05 parts per million. Indians and Eskimos in parts of Canada and the United States eat fish and seal meat with mercury levels as high as 15.7 and even 32.7 parts per million. These mercury levels are due to acid rain.

In just ten years, from 1961 to 1971, Lumsden Lake in the beautiful Killarney region of Ontario, Canada, went to a pH reading of 6.8 to 4.4. That's an increase in acidity of more than 200 times. Most lakes with dropping pH values are at higher elevations. These lakes are usually small and located in watersheds where the rock and soil have a low neutralising capacity.

 In August 1987, over one hundred people were treated for eye, throat, and mouth irritation when 2 tons (1.8 metric tons) of highly toxic sulphur dioxide gas leaked from an Inco plant near Sudbury, Ontario. Even without accidents, the sulphur dioxide regularly emitted from Inco smokestacks has been linked to chronic bronchitis in Inco employees.

Forestry is an industry worth $10 billion a year in Canada. About 10 percent of all Canadian jobs depend on the harvesting and processing of trees. When forests are in danger, those jobs may disappear, too. If Acid rain continues to threaten forests, jobs will be lost.