A picture taken on January 25, 2012 shows a customer filling her car with diesel at a petrol station in the French western city of Pont-l’Abbe. The World Health Organisation’s cancer research agency on June 12, 2012 classified diesel engine exhaust as cancer-causing, and urged action to reduce human exposure to it. “Diesel engine exhaust causes lung cancer in humans,” Christopher Portier, chairman of a working group at the WHO’s International Agency for Research on Cancer (IARC), said in a statement. AFP PHOTO / FRED TANNEAU (Photo credit should read FRED TANNEAU/AFP/GettyImages)
