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EARTHTALK: Hyper-Efficient Future Planes Coming Within Two Decades
Dear EarthTalk: You hear a lot about greener cars these days, but what about airplanes? —John Caldwell, Lorton, VA While it may be the fastest […]
Dear EarthTalk: You hear a lot about greener cars these days, but what about airplanes? —John Caldwell, Lorton, VA While it may be the fastest […]
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