Strato-glider to Explore Little-known Mountain Waves

April 29, 2017 12:57 AM
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Later this year, two pilots in a sailplane will try to break the world altitude record for a glider, soaring more than 27 kilometers above sea level. But their primary mission will be to explore the little-known phenomenon called "mountain waves" and to carry a number of experiments designed by school students. VOA's George Putic reports.