You still need carbon; plants just extract it from the air using light. | Hacker News

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		yjftsjthsd-h on Jan 18, 2021 \| parent \| context \| favorite \| on: Amazon Echo Flex Teardown: The Big Silicon You still need carbon; plants just extract it from the air using light.

vbezhenar on Jan 18, 2021 [–]

Reuse CO2 and human waste. You need some income, as reuse can't be perfect, but I think it's manageable.

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