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Nature 432, 268-270 (18 November 2004) | doi:10.1038/432268a; Published online 17 November 2004

Emissions trading: The carbon game

Michael Hopkin1

  1. Michael Hopkin is a reporter for news@nature.com based in London.
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Companies are already swapping money for the right to emit more pollution, and cashing in on projects designed to suck up greenhouse gases. As this market booms, will it actually help to cut down on emissions? Michael Hopkin reports.

This summer, a group of power companies in Japan and Canada developed an unusual interest in pig manure. The porcine waste was at the heart of a landmark multimillion-dollar deal between Chile's largest pork producer and the power companies, allowing the latter to emit more pollution.