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View Diary: Sea Urchin offers path to Cheap Carbon Sequestration (118 comments)

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  •  Chalk doesn't burn. (0+ / 0-)

    I am not a chemist.

    But because you can't light chalk on fire, I suspect that it doesn't take much energy to make. It's not like we are turning the CO2 back into coal or oil.

    But you raise a valid concern.

    Maybe we just farm sea urchins?

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