But there's no smell of jet fuel, no roar of engines, and no sign of a runway.

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There is no single study that compares jet fuel use for passenger flights versus air freight shipping.

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It would be akin to spending billions to research and build a new fighter jet and then realizing that we have no fuel to fly it.

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Earnings growth is also highly likely as there were no major hikes in prices of jet fuel, which is the single largest cost head for airlines.

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Many analyses, though, suggest that, to have an appreciable effect on the oil sector, carbon taxes would have to be quite high in the neighborhood of two dollars on a gallon of gasoline precisely because today there are no readily available substitutes for gas or diesel or jet fuel.

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No business jet or turboprop can go as high and fast on so little fuel.

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There is no hope for any hydrotreated fuel to come anywhere near conventional diesel or jet fuel prices.

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