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Global climate change, prior to the 20th century, appears to have been initiated primarily by major changes in volcanic activity. Sulfur dioxide (SO 2 ) is the most voluminous chemically active gas emitted by volcanoes and is readily oxidized to sulfuric acid normally within weeks. But trace amounts of SO 2 exert significant influence on climate. All major historic volcanic eruptions...
We constructed a model to simulate emissions of CO 2 from electricity generation in the US and, using the model, we developed 20-year projections of emissions under various regulatory scenarios.We concluded that the State renewable portfolio standards (RPS) adopted by 23 States will decrease emissions by a mere 4.5% relative to business-as-usual (BaU) conditions. By comparison, possible national...
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