US oil and gas air pollution is causing unequal health impacts: Study

Air pollutants from U.S. oil and gas operations are causing 91,000 premature deaths and hundreds of thousands of health issues each year — with racial and ethnic minority populations bearing the biggest burden, a new study has found.  The outdoor contaminants, which include fine particulate matter (PM 2.5), nitrogen dioxide (NO2) and ozone, take the…