US aircraft giant Boeing claimed Thursday a world first in putting into the air a plane powered by a hydrogen-cell battery, a breakthrough that could herald a greener future for the industry.
"For the first time in the history of aviation, Boeing has flown a manned airplane that was powered by a hydrogen battery," Boeing chief technology officer John Tracy said.
The development was "a historical technological success for Boeing (and) ... full of promises for a greener future," Tracy told a news conference at the firm's research centre in the central Spanish town of Ocana. ...
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