>Most hydrogen is likely inaccessible, but a few percent recovery would still supply all projected demand — 500mn tonnes a year — for hundreds of years
Most of it comes from a reaction between water and 'ultrabasic rocks' according to Wikipedia. It hasn't been searched for much as it occurs in different geology to natural gas and there hasn't been much demand till recently.
>Most hydrogen is likely inaccessible, but a few percent recovery would still supply all projected demand — 500mn tonnes a year — for hundreds of years
Most of it comes from a reaction between water and 'ultrabasic rocks' according to Wikipedia. It hasn't been searched for much as it occurs in different geology to natural gas and there hasn't been much demand till recently.