Innovators up work on 'green' hydrogen plane with plans for 9-day trip around Earth
Swiss aviation pioneer Bertrand Piccard is developing a plane powered by liquid hydrogen after a much-hyped flight in 2015 ...
Remains of all 67 victims of the deadly plane and chopper collision near D.C. have been recovered
The news came as crews worked to recover parts of the American Airlines jet involved in last week's midair crash from the Potomac River.