The report by AEA technology said emissions of the gases, used in refrigeration, air-conditioning and heat pump systems, were "relatively small" at 3.9% of the total but were increasing.

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Pollutants like sulfur are removed, and GreatPoint uses conventional air-chilling technology to separate out the carbon dioxide, which it plans to pump into the ground for enhanced oil recovery.

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By sucking 55-degree heat out of the ground and concentrating it, the heat pump is able to deliver 110-degree heat into the warm air ducts of a central heating system.

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Every second, the world's smokestacks and cars pump 2.4 million pounds of the heat-trapping gas into the air.

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Air is injected into the bubble rows by a squeaky pneumatic pump, then the sheets are heat-sealed on one edge.

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For a man who can pump out such blistering, no-nonsense post-punk hard rock, the air of the more mannered art-school rocker hangs thickly around Jack White.

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