Engineers are making strides toward cars that can use their own waste for energy, testing BMW, Chevrolet and Ford vehicles outfitted with heat-collecting devices that can improve fuel economy.
Future cars may eat their own exhaust, converting heat from their emissions into electricity. The conversion can improve fuel economy by reducing an engine’s workload.
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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