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Continue to ChatScience and Math Teachers From Across the U.S. Take to the Skies Over Detroit On Second Stop of Northrop Grumman Foundation Weightless Flights of Discovery https://aviationnews.eu/news/2009/09/science-and-math-teachers-from-across-the-u-s-take-to-the-skies-over-detroit-on-second-stop-of-northrop-grumman-foundation-weightless-flights-of-discovery/