At first glance, a flyable airplane made of cardboard sounds almost like a joke – the sort of thing that collapses long before it ever leaves the ground. But YouTuber and serial tinkerer Peter Sripol ...
Inventor Toshikazu Tsukii knows how hard it will be to get his next big idea off the ground. For one thing, the wings aren’t attached anymore. Sometime next year, the retired Raytheon engineer hopes ...
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