Geologists signal start of hydrogen energy “gold rush”

Geologists are signalling the start of a new energy “gold rush” for a previously neglected carbon-free resource — hydrogen generated naturally within Earth. As much as 5tn tonnes of hydrogen exists in underground reservoirs worldwide, according to an unpublished study by the US Geological Survey. Previewing the results at the American Association for the Advancement of Science annual meeting in Denver, project leader Geoffrey Ellis said: “Most hydrogen is likely inaccessible, but a few per cent recovery would still supply all projected demand — 500mn tonnes a year — for hundreds of years.”

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