The hydrogen fueled planes

 Yahoo News:

In January of this year, the company ZeroAvia announced that its 19-seater jet had completed a flight using nothing but green hydrogen — a fuel that produces no harmful carbon pollution and is made with clean energy.

At that time, the flight was the largest ever for an aircraft powered only by a hydrogen-electric engine. But about a month and a half later, on March 2, the aerospace company Universal Hydrogen completed an even larger test flight.
...

But the company won’t be without competitors in this effort. Rolls-Royce, Airbus, and ZeroAvia are all testing out jets with engines that can use hydrogen fuel.
...

The article does not indicate how the hydrogen was extracted and used for fuel.  That could be an important aspect of this business model and it might not be limited to just airplanes. 

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