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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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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. The data came from more than 140 countries and went back as far as the 1800s, when publications even at that time tallied how much coal and copper were produced.

2005 186
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PNNL modeling study finds climate benefit for cutting soot, methane smaller than previous estimates

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a joint venture between Pacific Northwest National Laboratory and the University of Maryland. Methane, the main component of natural gas, is released from leaking pipelines, coal mines, oil wells, cattle, rice paddies and landfills. All feasible and available technology was used to eliminate as much methane as possible.

Climate 199
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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. Reduced Output. Financing Investments and Other Public Expenditures.

Gas 244