I've noticed that the F-35 Joint Strike Fighter and the F-22 Raptor, both of which are in development by Lockheed Martin, look strikingly similar. What's the difference between the two?
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Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.
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