Drilling for hydrogen?

I didn't know anything about this:  

The Malian discovery was vivid evidence for what a small group of scientists, studying hints from seeps, mines, and abandoned wells, had been saying for years: Contrary to conventional wisdom, large stores of natural hydrogen may exist all over the world, like oil and gas—but not in the same places. These researchers say water-rock reactions deep within the Earth continuously generate hydrogen, which percolates up through the crust and sometimes accumulates in underground traps. There might be enough natural hydrogen to meet burgeoning global demand for thousands of years, according to a U.S. Geological Survey (USGS) model that was presented in October 2022 at a meeting of the Geological Society of America. 

That's from a lengthy article about it at Science, which I hope is open for all to read.   

It also points out how drilling for oil has such a short history:

It is still early days for natural hydrogen. Scientists don’t completely understand how it forms and migrates and—most important—whether it accumulates in a commercially exploitable way. “Interest is growing fast, but the scientific facts are still lacking,” says Frédéric-Victor Donzé, a geophysicist at Grenoble Alpes University. Big Oil is hanging back, watching while wildcatters take on the risky exploratory work. Commercialization of the Mali field has run into snags, and elsewhere only a few exploratory wells have been drilled. Donzé, who has sworn off accepting industry money, worries about hype.

Yet some scientists have become true believers. Eric Gaucher, a geochemist at the University of Bern, left a career at French oil giant Total because it wasn’t moving fast enough on hydrogen. He believes the Mali discovery might end up in the history books alongside one that happened 163 years ago in Titusville, Pennsylvania. At the time, the world knew about seeps of oil in places such as Iraq and California but was blind to the vast deposits that lay underground. Then on 27 August 1859, a nearly bankrupt prospector named Edwin Drake, working in Titusville with a steam engine and cast-iron drill pipes, struck black gold at a depth of 21 meters, and began collecting it in a bathtub. Before long, U.S. companies were harvesting millions of bathtubs of oil every day.

“I am thinking we are not very far from that with hydrogen,” Gaucher says. “We have the concept, we have the tools, the geology. … We only need people able to invest.”