Air pollution in New Zealand?

Air: "For more than 30 nights each winter, Christchurch sits under a blanket of smog. It creates major difficulties for thousands of people with respiratory problems and ruins the image of our clean, green city. And yet the source of the problem isn’t heavy industry or rush-hour traffic. Eighty percent of the polluted air we breathe is estimated to come from solid fuel burning for home heating.

The Clean Heat Project was established to help everyone in Christchurch move voluntarily to cleaner heating and enjoy a warmer home in the process. We have major funding incentives available that will save you hundreds, if not thousands of dollars on insulating your home and installing much more efficient heating technologies."