Study: Bakken oil field is causing a rise in air pollution, study says

An oil and natural gas field in the western United States is largely responsible for a global uptick of the air pollutant ethane, according to a new study. Associated Press.  Apr 30 2016

There are other ways ethane gets into the atmosphere — including wildfires and natural seepage from underground gas reserves. But fossil fuel extraction is the dominant source, accounting for roughly 60 to 70 percent of global emissions, according to a 2013 study from researchers at the University of California.

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