Oct 13, 2004
Home Sweet Home.
This article (and map below) shows the concentrations of Nitrogen Dioxide (NO2) a substance with the darling qualities of causing “respiratory problems and lung damage, and can also contribute to harmful ozone forming near ground level”
Check out Canada. Of course Toronto and the various other big cities around the great lakes are all red, but what surprised me is how clean Vancouver is and that Calgary is nudging on the red end of the scale.
Click image for full-size.