3 ms·

I think it is pretty certain that car exhaust is harmful. Did you drive today?

• collyw 13y ago
  I always find the anti-smoking crowd incredibly hypocritical when they jump in a car without second thought. There are many cities in the world where it is claimed the pollution is equivalent to x cigarettes per day. I also wonder how many control experiments are done to deduce that "second hand smoke" is causing many of the problems described, as opposed to air pollution from diesel engines.