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Nature 418, 913-914 (29 August 2002) | doi:10.1038/418913a

Methane hydrates: Fire from ice

David Adam1

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Natural gas is in great demand, and researchers know where vast amounts are hidden — in icy crystals called hydrates. But getting it out is another matter, as David Adam finds out.

It's unlike fossil-fuel companies to ignore an untapped energy resource. Yet from the Arctic tundra to the Indian Ocean, huge reserves of methane lie undisturbed, trapped in strange, ice-like crystals.