A hydrogen drilling facility in Nebraska. NATURAL HYDROGEN ENERGY

Thanks to Fred Pearce, as always, for making the complex more comprehensible; and to Yale e360′s contribution to our continuous learning:

Natural Hydrogen: A Potential Clean Energy Source Beneath Our Feet

As studies show far more natural hydrogen underground than believed, well-funded efforts to drill for the gas are underway around the globe. Boosters see a plentiful green replacement for fossil fuels, but skeptics say its large-scale use may not be practical or cost-effective.

A remote community of mud huts and corrugated iron roofs in the arid savannah of West Africa could be a trailblazer for a new form of carbon-free energy. The residents of Bourakebougou in Mali are the only people in the world who get their electricity by burning natural hydrogen. First identified bubbling from the depths through a village water well in 1987, the gas contains no carbon and, when burned, produces only water.

But the Malian pioneers could soon lose their unique status. Geologists who once dismissed out of hand the idea that the Earth’s crust was widely impregnated with stores of hydrogen, now say there could be trillions of tons of it lying unnoticed beneath the planet’s surface, with more being generated all the time.

In recent months, prospectors have been rushing to find it — drilling for hydrogen in northeast France, Australia, Spain, Morocco, Brazil, and, in the United States, in Nebraska, Arizona, and Kansas. Even Bill Gates has joined the hydrogen rush, making a major investment in a company that is exploring for hydrogen in the Midwest…

Read the whole article here.