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First the plant stalk is harvested, shredded, and crushed. The extracted juice is then combined with bacteria and yeast in large bioreactors, where the sugars are metabolized and converted into ethanol and carbon dioxide. From there, the liquid is typically distilled to maximize ethanol concentration, before it is blended with gasoline.
You know the final products as biofuels — mostly made from food crops like sugarcane and corn, and endorsed by everyone from agricultural lobbyists to activists and billionaires. Biofuels were developed decades ago to be cheaper, greener alternatives to planet-polluting petrol. As adoption has expanded — now to the point of a pro-biofuel agenda being pushe

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