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EPA report to Congress finds a strong scientific and technical foundation for mitigating black carbon emissions

Green Car Congress

Clean clouds and non-light-absorbing (transparent) particles scatter or reflect sunlight, reducing the amount of solar energy that is absorbed by the surface. BC suspended in the atmosphere absorbs some incoming solar radiation, heating the atmosphere. Most solar radiation is absorbed by the Earth’s surface and warms it.

Congress 252
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UNEP Report Calls for More Sophisticated Approach to Developing Biofuels; Limitations of Current LCA Studies

Green Car Congress

Here, RME show advantages for primary energy and GHG, but disadvantages in terms of acidification, eutrophication and ozone depletion. World ethanol production for transport fuel tripled between 2000 and 2007 from 17 billion to more than 52 billion liters (13.7 Source: “Assessing Biofuels”. Click to enlarge. billion gallons US) liters.

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