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Green Car Congress
OCTOBER 14, 2009
Current emissions of anthropogenic greenhouse gases (GHGs) have already committed the planet to an increase in average surface temperature by the end of the century that may be above the critical threshold for tipping elements of the climate system into abrupt change with potentially irreversible and unmanageable consequences, the authors write.
Green Car Congress
OCTOBER 16, 2009
The report estimates that carbon emissions equal to half the annual emissions of the global transport sector are being captured and stored by marine ecosystems such as mangroves, salt marshes and seagrasses. Credit: Riccardo Pravettoni, UNEP/GRID-Arendal. Click to enlarge.
Green Car Congress
JUNE 13, 2009
Wastes from cattle, chickens and other livestock include nitrogen. Data on agricultural nitrogen pollution are limited, and some nitrogen pollution forms are difficult to monitor. Tags: Brief. But excess nitrogen is emitted from soils, seeps into groundwater and runs off into surface waters. Tom Tomich.
Green Car Congress
OCTOBER 8, 2010
The findings, published in the 21 September issue of Atmospheric Chemistry and Physics , are generally consistent with official Chinese government statistics and could bolster their credibility as international negotiations proceed on commitments of China and other nations to combat climate change. Tags: Brief.
Green Car Congress
JULY 21, 2009
An added benefit of the conversion program is that it not only reduces pollution but also extends the life of the vehicles, helping to eliminate waste production and creating a reduce-and-reuse program. As a result of these efforts, FedEx Express has saved 45 million gallons of fuel or 452,573 metric tons of carbon dioxide emissions.
Green Car Congress
APRIL 21, 2009
Results showed that butanol mixed with diesel can reduce emissions of criteria pollutants. Diesel Brewing’s process gasifies wood wastes, agricultural residues and manure into a syngas that is cleaned and fed into a catalytic reactor and purification system to generate a suite of alcohols containing butanol, ethanol and methanol.
Green Car Congress
FEBRUARY 17, 2010
A new cost-benefit analysis of biofuels policies by economists Harry de Gorter and David Just at Cornell University has concluded that government mandates for biofuels “ are clearly superior to all other policies, with few tradeoffs arising. biofuel policies that attempt to curb CO 2 without directly cutting energy use are clearly wasteful.
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