But since Americans are in effect being taxed thrice over to pay for the ethanol industry – they subsidise the growing of maize, they subsidise the manufacture of ethanol and they pay more for their food – the ability of American consumers to contribute to demand for manufactured goods is actually hurt by ethanol, not helped. Meanwhile, the environmental benefits of biofuels are not just illusory; they are negative. Fermenting carbohydrate is an inefficient business compared with burning hydrocarbon. Every acre of maize or sugar cane requires tractor fuel, fertilisers, pesticides, truck fuel
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