Hydrogen has all the time been an intriguing potential replacement for fossil fuels. It burns cleanly, emitting no carbon dioxide; it’s power dense, so it’s a good way to store energy from on-and-off renewable sources; and you can even make liquid synthetic fuels which are drop-in replacements for gasoline or diesel. But most hydrogen thus far has been made from pure gasoline; the method is soiled and power intensive. The gentle has a protracted lifespan and doesn’t generate excess warmth — important qualities for a technology that’s used daily. Over the final 10 years has created an entirely new world …