A Dash-8 commuter plane flew for 15 minutes with a hydrogen fuel-cell engine
 

Hydrogen holds promise for zero-emissions aviation, via either fuel-cell electric motors or jet engines that burn H2 directly. Now, Universal Hydrogen has announced that it completed a 15-minute test flight in a 40-seat Dash-8 commuter plane using a fuel-cell hydrogen engine. The company called the flight "historic" and said it is "committed to being North America’s first zero-emission airline."

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