" U.S. policy to boost the use of fuel from renewable sources is generating additional greenhouse gas emissions due to rising trade in ethanol between the United States and Brazil, rather than lowering emissions as intended, research by Thomson Reuters Foundation shows."
"As a result, since the start of 2011, the United States and Brazil have shipped over 1 billion gallons of ethanol back and forth – more than 500 million gallons each way. The emissions generated by the shipping have worsened the carbon footprint of both fuels."
"As demand for biofuels has grown in the United States, non-profit groups working on poverty and the environment have also weighed into the debate, arguing that growing biofuel crops on large swathes of land is hiking food prices, damaging the productivity of farmland and causing deforestation."
http://www.trust.org/item/20130703091935-47h65
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