Scientists just discovered dozens of new sources of air pollution - revealed nearly 40 previously unreported major sources of sulfur dioxide emissions — a pollutant that can cause multiple harmful health and environmental impacts and even exacerbate global warming.

See the source article by following the link below:
Scientists just discovered dozens of new sources of air pollution - revealed nearly 40 previously unreported major sources of sulfur dioxide emissions — a pollutant that can cause multiple harmful health and environmental impacts and even exacerbate global warming.