Brazil looks to use fuel alternative
When produced at its cheapest, ethanol comfortably undercuts the price of petrol and emits far less carbon dioxide.
But as well as heading off global warming, could ethanol also contribute to energy security as western governments fret about increasingly unpredictable and volatile supplies of oil and gas?
By far the world's most efficient producer is Brazil, which distils ethanol from sugar cane. Brazil has about half the world's sugar export market and aims to produce 40 per cent more ethanol by 2010.
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