Despite being the most abundant element in the universe, hydrogen is almost always attached to something else (oxygen for example). Deep underground, geologic forces can create sometimes massive pockets of hydrogen gas that if extracted like shale gas, can be burned to power airplanes, trains, heavy machinery, and steel production, all with the only direct emission being water.

The story that is now sweeping international energy headlines began when Jacques Pironon and Phillipe De Donato, directors of research at France's National Centre of Scientific Research, were out assessing methane stores using a state-of-the-art probe in France's Lorraine Basin.