Science
Natural Gas Burns: Alberta’s “Sour Gas”
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By Jennifer Huang | World Power II: Environment
Page 3 of 4
In Alberta, Canada, many oil and gas operations are located near towns and farms, sometimes less than a kilometer away. Residents blame a rash of severe public health and environmental problems — from crop damage and childhood illness to miscarriages, livestock deaths and human brain damage — on the flaring and venting of natural gas at drilling sites and refineries. At the center of the controversy is hydrogen sulfide — or “sour gas” — a poisonous substance that has been compared to cyanide, and described by the 1924 U.S. Public Health Service as “one of the most toxic of gases.” According to Dr. Kaye Kilburn, a neurotoxicologist at the University of Southern California and the author of the book “Chemical Brain Injury,” hydrogen sulfide causes permanent brain damage at very low levels and can kill at 500 parts per million. Sour gas is widespread in Canada and throughout North America, he said, and “in Alberta, particularly, [oil companies] have exposed quite a few people who farm and ranch in the areas where they’re putting a lot of wells down …