Microbe emits hydrogen as a waste product

“Take a pot of scalding water, remove all the oxygen, mix in a bit of poisonous carbon monoxide, and add a pinch of hydrogen gas.” Why? Because a fast-growing microbe, Carboxydothermus hydrogenoformans, prefers this environment. Why do we care? “Isolated from a hot spring on the Russian volcanic island of Kunashir, this microbe lives almost entirely on carbon monoxide. While consuming this normally poisonous gas, the microbe mixes it with water, producing hydrogen gas as waste.”

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