Gas hydrates could produce more energy than all other fossil fuels combined. Alaska's got a giant stash of this alternative energy source beneath its north slope. Check out this comic to get the inside scoop.
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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.