Wood Smoke

We've come to expect hight air pollution levels in Beijing and other Asian cities with high traffic levels and surrounded by dirty coal plants, but not in cities using emission-free nuclear energy and lots of bikes and mass transit. So why Paris?
Mar 17, 2014   The New York Times - Europe
31 atmospheric scientists have written a new study on the major component of soot called 'black carbon', long identified with causing respiratory problems - and have shown how it is the 2nd most important agent of climate change after carbon dioxide.
Jan 18, 2013   The New York Times