I believe it is in all big cities the pollution is high, if you compare London, Paris, Berlin, in Europe we also have a lot of pollution and also the countries are located close to each other. Also the planes are not making it better, as we know we like to go from point A to point B quick adn with comfort, the prices for flights are sometimes cheaper then for trains, so pollution also high up in atmosphere too. I can understand you very well, and I agree if you really think about your health or health of your family get out of the cities, move to land.