Nitrogenase
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Sun-powered bacteria turn nasty CO2 into helpful biofuel
Cars emit polluting carbon dioxide (CO2) when they burn gas, but what if you could reverse the process? Scientists from the University of Washington have engineered a bacteria that can do just that: pull CO2 from the air and, using sunlight, convert it to methane and hydrogen gas. The organism only produces a limited amount of fuel, but the results could lead to ways to reduce CO2 in the air and produce useful fuel at the same time.
