LONDON (AP) -- Diesel exhaust causes cancer, the World Health Organization's cancer agency declared Tuesday, a ruling it said could make exhaust as important a public health threat as secondhand smoke....
By MARIA CHENG, Associated Press
Tue, 06/12/2012 - 9:40am
LONDON (AP) -- Diesel exhaust causes cancer, the World Health Organization's cancer agency declared Tuesday, a ruling it said could make exhaust as important a public health threat as secondhand smoke....