Freeway air pollution linked to brain damage in mice
http://latimesblogs.latimes.com/greenspace/2011/04/freeway-air-pollution-brain-damage-mice.html
http://latimesblogs.latimes.com/greenspace/2011/04/freeway-air-pollution-brain-damage-mice.html
"It is well known that air pollution from cars and trucks on Southern California freeways -- a combination of soot, pavement dust and other toxic substances -- can cause respiratory disease, heart attacks, cancer and premature death."