Your comment about Paris / Beijing air quality is misleading, here is an article and graphs about that : http://www.francetvinfo.fr/monde/asie/pollution-en-chin

Your comment about Paris / Beijing air quality is misleading, here is an article and graphs about that : http://www.francetvinfo.fr/monde/asie/pollution-en-chine/pollution-jeudi-l-air-de-paris-etait-plus-pollue-que-celui-de-pekin_552085.html http://www.francetvinfo.fr/monde/asie/pollution-en-chine/pol... It is a one time event where the worst air quality passed over Beijing's when it was at its best.