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Exposure to the air pollution in many big cities significantly raises the risk of dying from lung cancer. The risk is from what scientists call particle pollution, fine particulate matter of dust, diesel soot, and other carcinogens emitted by cars, trucks, and airplanes. People who live and work next to congested freeways and airports are at least twice as likely to develop cancer from breathing vehicle exhaust than those who live next to highly industrial areas.*
The health risks from particle pollution are greatest for people who work or live near diesel exhaust sources. This includes commercial buildings and offices located near freeways, airports, and other heavily traveled areas. The freeways are packed with diesel fuel burning engines that emit more than 40 chemicals that are considered toxic by the EPA. Also consider the fact that most cars and trucks have radial tires, which spew billions of tiny latex particles into the atmosphere every day by the wear and tear of ordinary driving.