These engines use gasoline or diesel, and both fuels are full of chains of carbon atoms known as octane.
In other words, no single category of renewable energy is growing anywhere near the speed it needs to bear the full brunt of displacing carbon-emitting fossil fuels anytime soon.
However, beyond the smokestack, looking at the full life-cycle accounting for carbon of various biomass feedstocks, other reports have found that the source of the feedstock matters.
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Unipede, a coalition of big European electricity utilities, and the International Energy Agency in October completed a full-fledged simulation of electricity and carbon-dioxide trading.
Labour says the failure of the government's economic policy is undermining its agenda and its Green Investment Bank will not have full borrowing powers to fund low-carbon projects until 2016.
Carmakers quickly refocused their manufacturing efforts towards so-called crossover vehicles or compact sports utility vehicles (SUVs) which combine the looks and high-riding positions of full-size SUVs with the better handling, the lower carbon dioxide emissions and the improved fuel economy of ordinary cars.
Mr Stevenson's motion stated Scotland was developing a national consensus and determination to play a full role in developing the technologies, skills and expertise to build a low carbon economy.
Some of the proposed the legislation around carbon pricing proceeds from the idea that companies do not pay the full cost of consuming valuable natural resources that also pollute the environment, and instead pass substantial costs to taxpayers.
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Fossil-fuel plants also operate less efficiently at less than full power, so reducing demand for their power, without eliminating it, can offset carbon savings, according to the researchers.
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Those looking to minimize their carbon footprints are able to choose among a growing number of part- and full-time electric vehicles like the new Toyota Prius plug-in hybrid and the Ford Focus Electric and Mitsubishi i.
Meanwhile, Nissan is moving its Leaf to a main, integrated production line, Toyota sold 12, 750 units of it plug-in Prius in the first full year, and BMW is apparently moving a fantastic product (while investing in a carbon-fiber factory in Washington State).
When it reaches full capacity in 2012, it will employ 2, 700 workers and produce some 5.1m tons of carbon and stainless steel per year.
Those estimates are based on full fuel-cycles, combine all steps in the use of a fuel from production to consumption, and include carbon dioxide, nitrous oxide and methane, the three major greenhouse gases emitted by motor vehicles.
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