No denying that. But since the air is now clean in what is perhaps the worst environmental location (LA is a basin so emissions tend to linger), then do we need to reduce emissions even further? [Vehicle emissions at least. Plenty of other emissions sources exist.] If LA was that clean 10 years ago, do we need today's tighter limits? Or have we reached a "good enough" point?
Originally Posted By: HTSS_TR
If you guys ever saw the smog in LA basin 30-40 years ago you will appreciate the clean air in So Cal we have now. The clean air we have now was the result of hard works by EPA and CARB. Otherwise, we would have the same air quality as Chinese people have in Beijing and other big cities in China.