Walking around town, my friend and I had noticed that almost every home had a pile of coal outside, soft dark chunks that people shoveled into stoves for cooking and heating. Thousands upon thousands of coal fires were loading the air with tiny dots of soot. Scientists have taken to calling these dots “black carbon,” and have steadily ratcheted up their assessments of its harm. In March, for instance, a research team led by a Mumbai environmental group estimated that black carbon and other particulate matter from India’s coal-fired power plants cause about 100,000 deaths a year.
What If We Never Run Out of Oil? - Charles C. Mann - The Atlantic - 1 views
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A 31-scientist team from nine nations released a comprehensive, four-year assessment in January arguing that planetary black-carbon output is the second-biggest driver of anthropogenic (human-caused) climate change; the little black specks I found on my glasses and clothes have roughly two-thirds the impact of carbon dioxide.
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The rule of thumb is that if a well leaks more than about 3 percent” of its methane production into the air, “natural gas actually becomes dirtier than coal, from a climate-change perspective,
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