If you think the atmosphere is only of miniscule thickness (compared to the vastness of space) what the hell are we doing pumping all that crap into the air? Just waiting for a breeze to blow it away only takes it somewhere else.
Some of the most ardent 'greenies' are current and ex-Astronauts. They have seen what a delicate gem our planet is. That people are willing to destroy that for the almighty $$$$$$$$$$$$$$$$$$$$$ beggars belief.
Western countries leave much to be desired but make no mistake, the living habits of Hong Kong and Mainland citizens are at the very forefront of global destruction.
NO2 is not beneficial to your child's lungs.
