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1 .This is Scientific American 60-Second Science. I'm Sophie Bushwick. Got a minute?
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2 .Developed countries spend about 3 percent of all their electrical power treating wastewater.
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3 .The juice purifies contaminated material so it can be returned safely to the environment.
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4 .Now researchers think they can turn this power drain into a power source.
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5 .Because a new kind of battery uses microbes to produce electricity from wastewater.
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6 .The work is in the Proceedings of the National Academy of Sciences.
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7 .Like us, some microbes draw their energy from organic matter.
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8 .And wastewater is chock full of such fuel.
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9 .So scientists gave microorganisms polluted water and wired them up.
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10 .When the microbes harvested electrons, the particles traveled through the electronic components to power a battery.
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11 .This system had a net efficiency of 30 percent, about the same as a commercial solar cell.
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12 .In theory, microbial batteries like this one could eventually be made more efficient, producing enough electricity to power the treatment of the wastewater three times over.
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13 .Which gives a whole new meaning to the saying, "Waste not, want not."
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14 .Thanks for the minute, for Scientific American 60-Second Science. I'm Sophie Bushwick.
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