Many devices depend on batteries that are unsustainable because they require rare earth metals like lithium. Now, scientists have discovered a clean, renewable alternative: a microbial-fuel cell that does not require an external power source to create an electric current. The microbial cells excrete electricity after consuming a chemical food source. The fuel cell is made out of paper and is only a proof-of-concept at this stage. But it shows that the microbes that poop electricity could be the next batteries.
Clean, renewable batteries: Microbes that poop electricity
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