Hydrogen-powered plane takes off
This is something new and amazing effort on gas, where gas has played a major role as fuel according to BBC article.
The first manned, hydrogen-powered plane has been successfully tested in the skies above Spain, its makers say.
The small, propeller-driven craft, developed by aviation giant Boeing, made three short flights at an airfield south of Madrid, the company said.
It was powered by hydrogen fuel cells, which produce only heat and water as exhaust products.