Biofuel farms result in 'carbon debt'
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Science & environment: Converting rainforests, peatlands and grasslands for biofuels can increase CO2 emissions, scientists find
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The full emissions costs of producing biofuels are higher than those of producing of conventional fuels, scientists said.
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These days, pop stars, chief executives and politicians vaunt how they offset carbon emissions by planting trees or investing in renewable energy projects.
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In cutting across-the-board subsidies for biofuels, governments in Europe are discovering how difficult it can be to figure out whether a particular fuel has been produced in an environmentally friendly manner.
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Because of rising demand for ethanol, American farmers are growing more corn than at any time since the Depression. And sea life in the Gulf of Mexico is paying the price.
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It is increasingly clear that there is a considerable cost to carbon dioxide emissions, especially to future generations.
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Growing capacity could break the heart of ethanol investors.
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Long used by farmers as a guard against grazing animals and erosion, a plant called jatropha is now being hailed as a potentially ideal source of biofuel.
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Not green, not clever Biofuels are not the magic answer to oil shortages or global warming.â¦
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Biofuel may be the future of energy consumption but the rush to embrace it is driving up the price of corn, causing water shortages and driving poor farmers from their land, a U.N. official warns.
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NUSA DUA, Bali, Indonesia , Dec 13 (IPS) - Green groups hoping that the social and  environmental cost of biofuels would get an airing at the United  Nations climate change conference here are a disappointed lot.
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Spreading plantations are blamed for a threat to wildlife.
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DuPont and BP have announced they will invest $58 million in biofuel production assets at two facilities in the U.K. The two plan to construct a biobutanol demonstration facility, what the companies call the ... via Inside Greentech
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U.S. farmers can play a significant  role in curbing greenhouse gas emissions, but more research and  greater incentives are needed to make it cost-effective,  according to studies released on Thursday.
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Science & environment: Environmental and social impact of producing the crops may be greater than originally thought
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Plans to make cars greener by using fuel made from crops and animal fat are in doubt
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By Jay Burney  The newly proposed ethanol production facility, announced for downtown Buffalo, may carry with it some seriously negative environmental and economic consequences.  For instance, the U.S.