This genetic damage may be an important factor in cancer and the aging process.
But the carbon dioxide obtained from burning fossil fuels such as coal and natural gas at power plants, or from limestone in cement manufacturing, is virtually free of radiocarbon. It can be used to grow algae for making safer, less radioactive foods. As algae farming scales up to meet the demand for biofuels, this could result in the annual production of millions of tons of inexpensive protein.
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