The BBC reports the first human driven hydrogen powered plane was tested recently.
This is a major breakthrough in technology by Boeing. While hydrogen powered aircraft have been flown before, this is the first with a human passenger.

This is a major breakthrough in technology by Boeing.
Three test flights of the two-seater aircraft took place in February and March at an airfield at Ocana, south of Madrid. The plane was modified to include a hybrid battery and fuel cell system developed by UK firm Intelligent Energy.

The fuel cells, which create electricity by combining oxygen and hydrogen, were used to power an electric motor coupled to a propeller.

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