Air pollution is the release of pollutants (a substance or energy introduced into the environment that has undesired effects) into the air that are detrimental to human health and the Earth. In Canada, air pollution is regulated by standards set by the Canadian Council of Ministers of the Environment (CCME), an inter-governmental body of federal, provincial and territorial Ministers responsible for the environment. Air pollution from the United States and to lesser extent Canada; caused by metal smelting, coal-burning for utilities, and vehicle emissions has resulted in acid rain, has severely impacted Canadian waterways, forest growth, and agricultural productivity.
Pollution reduces the value of the assets that make up Canadians' wealth. Properties are less valuable when they are polluted. It is estimated that pollution costs Canada tens of billions of dollars every year. Transportation is one of the main sources of air pollution and greenhouse gas emissions in Canada and are responsible for more than a quarter of all greenhouse gases and air pollutants in Canada. Pollutants' concentrations in the air can be influenced by many factors, such as the number of air pollutants, proximity to sources, and weather conditions. Canada's population and economy growth increases the demand for the production and supply of services, transportation and housing. The energy required to meet such demands comes partially from fossil fuels, which affects air quality. The growing demand for Canadian exports, such as the oil and gas industry, also generates the release of air pollutants.
