>>geox+(OP)
I remember going to LA in the late 80's and my eyes watering (I also remember the pants-less man on the side of the strode but that is a different story). Environmental regulations are a win. Unfortunately there is a large segment of the population that doesn't believe something until it happens to them directly. That makes it a challenge to maintain environmental, or any regulations for that matter, over generations. It isn't practical, but it would be interesting to create 'pollution cities' where the regulations were loose so long as the entire company drew its workforce (including management) from the local population (like within a mile) and a significant portion of their drinking water and foods must also be sourced locally. Go ahead, pollute your own drinking water. I bet cities like this would be cleaner than ones with stricter regulations.