Diesel exhaust raises risk of dying from lung cancer, study says

Diesel exhaust raises risk of dying from lung cancer, study says
http://www.latimes.com/health/boostershots/la-heb-diesel-exhaust-cancer-20120302,0,2220205.story

"Diesel engine exhaust has long been officially classified as a probable carcinogen. A new study, however, provides evidence that long-term exposure to even low levels of diesel exhaust raises the risk of dying from lung cancer."