And it means that if you 're looking at notions of self-sufficiency then it 's completely out of the window . Once hailed as a climate savior , biofuels are now the subject of widespread criticism . FAO economist argues that it is important to distinguish between different biofuels . For example ethanol and biodiesel have very similar impacts on global warming but they differ in their environmental impact.
Once hailed as a climate savior , biofuels are now the subject of widespread criticism . FAO economist argues that it is important to distinguish between different biofuels . For example ethanol and biodiesel have very similar impacts on global warming but they differ in their environmental impact.