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Is there any way to produce food without sun, synthetically? I mean if we face solar winter. look at: Is there any way to survive solarwinter like in Sunshine - movie?

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up vote 4 down vote accepted

You make artificial light with the same spectrum as the sun, and shine it on the crops.

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There are even special suppliers able to fit a system into a house or truck – Martin Beckett Jun 20 '12 at 3:29

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