Hydrogen gas is the most clean-burning gas known to man. Yet methane, even if it’s a sibling of petrol, got its way through the alternative fuels industry, and it is more widely used nowadays, as fuel prices oscillate between skyscrapers and small houses. Methane is also one of the cleanest burning fuels, and that makes it viable for a while. Methane reservoirs still exist all around the world, and there’s plenty of it to help make a clean transition to hydrogen.