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Draft of EPA Greenhouse Gas Inventory Shows Overall GHG Emissions Down By 2.9% in 2008; Transportation Emissions Down 5.7% in Largest Annual Change Recorded Since 1990

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CO 2 emissions from the US transport sector, 1990-2008. The draft report of the US Environmental Protection Agency (EPA)’s annual Inventory of US Greenhouse Gas Emissions and Sinks: 1990-2008 shows that in 2008, overall greenhouse gas (GHGs) emissions decreased by 2.9% (206.1 Tg CO 2 in 2008 from 1,893.8 Click to enlarge.

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U of Michigan Study Finds Costs of Plug-in Cars Primary Key to Broad Consumer Acceptance

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Probabilities at different price points for at lest some chance of purchase. The survey of a nationally representative sample of 2,513 adults age 18 and over was conducted between July and November 2008 by the U-M Institute for Social Research as part of the Reuters/University of Michigan Surveys of Consumers. Source: Curtin et al.

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AT&T deploys 4,000th alternative fuel vehicle

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AT&T began deploying fleet AFVs in 2008 as part of an overall commitment to minimize its environmental impact while operating more efficiently. AT&T also operates a mix of other AFVs in its fleet in the state and nationwide, including all-electric and hybrid-electric vehicles.

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Study shows bamboo ethanol in China technically and economically feasible, cost-competitive with gasoline

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Now, researchers at Imperial College London have shown that bioethanol production from bamboo in China is both technically and economically feasible, as well as cost-competitive with gasoline. million tons in 2008. An open access paper on their study is published in Biotechnology for Biofuels.

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Ford to offer new diesel engine option in new Transit van; new Vehicle Emissions and Fuel Cost Calculator

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Ford also has developed a specialized new tool to help optimize fleet purchases based on specific fuel types and operating locations. For example, the tool can demonstrate how operating an electric vehicle in Portland, Ore., in 2008 to 53.7% has different environmental ramifications from operating one in Philadelphia.

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MIT and IEA reports take different views of the future of natural gas in transportation

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Because of the lower carbon/hydrogen ratio of methane (CH 4 ) relative to gasoline, CO 2 emissions from the combustion of natural gas are approximately 75% of those of gasoline for a given amount of energy production. emissions are reduced by around 25% relative to the use of gasoline for the same engine efficiency. Source: MIT.

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Belfer Center Study Concludes Reducing Car and Truck GHG Emissions Will Require Substantially Higher Fuel Prices; Income Tax Credits for Advanced Alt Fuel Vehicles Are Essentially Ineffective at Reducing Sector Emissions

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It also finds that, while relying on subsidies for electric or hybrid vehicles is politically attractive, it is an extremely expensive and ineffective way to significantly reduce greenhouse gas emissions in the near term. The key to obtaining significant reductions in transportation-related GHG emissions is to increase the cost of driving.