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• An agricultural enzyme can convert carbon monoxide into propane.
• The organism that produces the enzyme is usually found in the soil around the roots of nitrogen-fixing plants.
• The enzyme could eventually turn carbon dioxide into gasoline.
An enzyme found in the roots of soybeans could be the key to cars that run on air.
Vanadium nitrogenase, an enzyme that normally produces ammonia from nitrogen gas, can also convert carbon monoxide (CO), a common industrial byproduct, into propane, the blue-flamed gas found on stoves across America.
While scientists caution the research is still at an early stage, they say that this study could eventually lead to new, environmentally friendly ways to produce fuel -- and eventually gasoline -- from thin air.