The pipes contain oil that is heated and pumped hundreds of feet to a generator.

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The heated oil creates steam that drives an electricity-generating industrial turbine.

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However, over the past two decades, these regulatory limits have been weakened or removed, " they wrote, adding that restoration and stricter enforcement of the limits in combination with reforms to improve transparency, "will help cool the over-heated oil market and permit the economy to prosper.

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As oil production and prices heated up, demand for compressors and turbines jumped.

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We washed and filled a pan with oil and waited as it heated, fingering the slotted spoon with its scarred plastic handle.

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Most of it, even some very expensive olive oil, has been treated or heated destroying most of the health benefits, and it often has inferior flavor.

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There has been much heated debate this week about how much more oil there is to come - probably a lot, but not necessarily offering up quite such generous tax revenue once the industry has been incentivised to drill and develop in deep water and hard-to-reach reserves.

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