To save time I entrusted a couple of big cities to mayors. They built laborers and started polluting. Every time I saw that pollution was "in the red" I adjusted the city to fix the problem, but the mayor promptly changed things back.
The mayor are a problem with pollution. I was hoping they had a lower pollution mayor since pollution is a big focus later in the game and in dipolmacy. Maybe the good folks at actvision could include a pollution mayor in the patch. Should not be too hard.