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An ugly, toxic, tough-skinned weed has made a bit of a splash in recent weeks as a renewable energy source that wields a unique distinction: a decent shot at commercial viability. Oil made from the seeds of the jatropha plant, native to Central America and used for centuries as a hedgerow, has helped to power test flights by Air New Zealand (AIZ.AX), Japan Airlines (9205.T), and Continental Airlines (CAL) in the past six weeks. The oil's ability to replace kerosene-based jet fuel has provoked cautious optimism among researchers aiming to speed the aviation world's transition from crude oil...
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