A yearlong investigation by the Washington Post reveals that more than 400 large U.S. military drones have crashed around the world since 2001, due to mechanical breakdowns, human error and bad weather. The report is certain to raise concerns about allowing drones to fly in U.S. airspace.
io9 · Mark Strauss
Physics students at the University of Leicester claim to have calculated the amount of energy required to transform water into…
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