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(article, Culinate staff)
Food, of course, provides fuel for animals, including humans. But turning food, such as corn, into fuel for cars has proved controversial. Which is why scientists are trying to turn other forms of biomass and waste product into biofuels. There's algae, for one, and lignin, for another. Methane-generated electricity from cow manure is already here, and biofuels from chicken feathers might be next. Will any of these technologies replace fossil fuels? Stay tuned.