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Study finds methane emissions from coal mines ~50% higher than previously thought

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The amount of methane released into the atmosphere as a result of coal mining is likely approximately 50% higher than previously estimated, according to research presented at the recent annual meeting of the American Geophysical Union. The authors point out that less coal production doesn’t translate to less methane.

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EPA researchers suggest US electricity consumers should be willing to pay 2-4x for emission-free alternatives to fossil fuel electricity due to health impacts

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kWh—approximately 2–4 times current retail costs—for emission-free alternatives to fossil fuel electricity due to the cost of health impacts from fossil fuel electricity, according to a new analysis by a pair of researchers at the US Environmental Protection Agency (EPA) Clean Energy and Climate Change Office, Region 9.

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PNNL modeling study finds climate benefit for cutting soot, methane smaller than previous estimates

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Cutting the amount of short-lived, climate-warming emissions such as soot and methane won’t limit global warming as much as previous studies have suggested, according to a new study from the Joint Global Change Research Institute in College Park, Md., Carbon dioxide can remain for 1,000-plus years. —Steven Smith.

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Study finds that worldwide SO2 emissions rose between 2000-2005 after decade of decline; China, shipping topped growth

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The radiative forcing change wrought by sulfate aerosols may be second only to that caused by carbon dioxide, albeit in the opposite direction [i.e., Sulfur is ubiquitous in the biosphere and often occurs in relatively high concentrations in fossil fuels, with coal and crude oil deposits commonly containing 1–2% sulfur by weight.

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Perspective: Regional Greenhouse Gas Cap-and-Trade Programs May be the Solution

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Cap-and-trade was first tried on a significant scale twenty years ago under the first Bush administration as a way to address the problem of airborne sulfur dioxide pollution–widely known as acid rain–from coal-burning power plants in the eastern United States. Waxman of California and Edward J. Senators Lindsey Graham (R-S.C.),

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