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EPA says methane emissions from natural gas production have dropped 36% from 2007-2011

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In its recently released Inventory of US Greenhouse Gas Emissions and Sinks: 1990 – 2011 ( earlier post ), the US Environmental Protection Agency (EPA) reported that methane (CH 4 ) emissions from the field production of natural gas have declined by 36% from 2007 to 2011 (from 83.1 Tg or million metric tons CO 2 equivalent.)

2007 285
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CRC ACES Phase 2 report finds emissions from modern heavy-duty diesels well below required levels

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2010 engines emissions reduction relative to 2010, 2007, and 2004 US emission standards. The Health Effects Institute is an independent, non-profit research institute funded jointly by government and industry to provide credible, high quality science on air pollution and health for air quality decisions. Source: CRC. Click to enlarge.

Diesel 296
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Study finds power law scaling relationship between urban population and NO2 pollution

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Even though larger cities are typically more energy efficient with lower per-capita emissions, more people still translates to more pollution.) for China, reflecting regional differences in industrial development and per capita emissions. Energy usage patterns and per capita emissions differ greatly between India and Europe.

Pollution 261
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EPRI-NRDC report finds widespread vehicle electrification and a cleaner grid could lead to substantial cuts in GHG by 2050

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This study builds on the 2007 Environmental Assessment of Plug-in Hybrid Electric Vehicles by EPRI and NRDC ( earlier post ), which showed that plug-in hybrid electric vehicles could contribute to reductions in national greenhouse gas emissions, while also leading to improved air quality. levels throughout the United States.

EPRI 150
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UN Review of Recent Climate Research Concludes That Impacts Of Climate Change Coming Faster Than Anticipated

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The growth in carbon dioxide emissions from energy and industry has exceeded even the most fossil-fuel intensive scenario developed by the IPCC at the end of the 1990s. per year from 2000-2007. degrees Centigrade above pre-industrial surface temperatures could occur. Global emissions were growing by 1.1%

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IPCC: GHG emissions accelerating despite mitigation efforts; major institutional and technological change required to keep the heat down

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Decomposition of the decadal change in total global CO 2 emissions from fossil fuel combustion by four driving factors; population, income (GDP) per capita, energy intensity of GDP and carbon intensity of energy. The global economic crisis 2007/2008 only temporarily reduced emissions. WG III Summary for Policymakers.

Emissions 257
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UNEP Report Calls for More Sophisticated Approach to Developing Biofuels; Limitations of Current LCA Studies

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Here, RME show advantages for primary energy and GHG, but disadvantages in terms of acidification, eutrophication and ozone depletion. Increased eutrophication is a key characteristic of biofuels from energy crops when compared with fossil fuels. Source: “Assessing Biofuels”. Click to enlarge. billion gallons US) liters.

Ozone 186