Interesting.. I hadn’t heard of this before:
The technology works like this: beds, or seams, of underground coal are ignited, and the resulting combustible gas is piped out for use in electricity generation or as a raw material in chemical production.
The burn can be controlled by regulating the flow of oxygen, so there’s slim chance of giving rise to another Centralia, the abandoned Pennsylvania town where a coal seam near the surface has been burning since 1962.
I had also never heard of this before – “Marine Cloud Brightening” – MCB, as a way to minimize or stop hurricanes by cooling the warm water that powers them: