Image via NASA With what looks a bit more like a giant lawn dart than an airplane , NASA has a vision for a quieter, more environmentally friendly future for supersonic air travel. Called the Supersonic Green Machine, the airplane was designed by Lockheed Martin to correct a few of the problems that limited its faster-than-sound predecessor, the Concorde–such as that pesky sonic boom issue. But in addition to that, the concept plane prom… Read the full story on TreeHugger
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NASA Wants to Make Flying at Mach 1 a Little Greener
