Shih-Ger Chang, a senior scientist at the Lawrence Berkeley National Laboratory, has developed a recipe to feed astronauts on a three-year round-trip mission to Mars. His secret ingredient?
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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