It's been a big week for bacteria. Last week, a Canadian geo-scientist proposed using carbon-eating, methane-excreting microbes to turn crude into cleaner natural gas while still in the well. Now, researchers have found similar bacteria rapidly turning a CO2-filled coal mine into a veritable methane factory, blending CO2 and hydrogen atoms in the coal into natural gas, sans environmentally harmful mining.
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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