Emissions have declined, but sulfur dioxide air pollutant still a concern for asthmatics

16 julio 2015

Emissions of the air pollutant sulfur dioxide have been dramatically decreased during the past 30 years but for some people even a little inhaled sulfur dioxide may still be too much.img src=»http://feeds.feedburner.com/~r/sciencedaily/~4/z1AHR_cd5v4″ height=»1″ width=»1″ alt=»»/