Brazil's Biofuels Under Pressure

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The Brazilan city of Sertaozinho is known as the country's ethanol capital. Brazil's biofuel programme has been a great global success, but when Daniel Gallas visited Sertaozinho he found that it is suffering, as biofuels struggle to compete with cheap oil. (Photo: Tractor harvesting sugar cane for bio-fuels in Brazil, Credit: Nelson Almeida/Getty Images)