Are huge quantities of hydrogen gas hidden under Earth’s floor?

For the previous few years, corporations and prospectors around the globe have been looking for underground reserves of pure hydrogen, spurred by estimates that Earth accommodates trillions of tonnes of the gasoline. If discovered, this geologic hydrogen may speed up the transition away from fossil fuels. However regardless of a number of tantalising hints that huge reserves exist, the search has largely come up brief.

Till not too long ago, most geologists…