Leão de Sousa and other ethanol executives say financial incentives will pay for upgrades to comply with certification. They are banking on a responsible pedigree helping to sell more of the certificated products than everyday biofuels.
Scheme could solve ethanol's image problem
Ethanol's image has been battered by concerns that it consumes rainforest and contributes to higher food prices, but proposals to create an international certificate guaranteeing sustainability of biofuels could change that.
29 January 2009 23:00 GMT
Updated
25 November 2012 9:13 GMT
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