If there is no light, there is no catch, and there will be nothing to sell.” Analyn Fedelis in her boat with solar lights and radio. Credit: Nyimas Laula / UN Women But for nearly a year, Fedelis has ...
Light aircraft often use a heading indicator as a way to know where they’re going. Retired instrumentation engineer [Don Welch] recreated a heading indicator of his own, using cheap ...
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