Topsoil is needed for plants, which won't grow underground without it. And if yo... | Hacker News

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		rohit2412 on Dec 7, 2018 \| parent \| context \| favorite \| on: Can We Grow More Food on Less Land? Topsoil is needed for plants, which won't grow underground without it. And if you're going to carry soil underground, might as well do it in an above ground building. Or try hydro ponics

meggar on Dec 7, 2018 [–]

I was thinking more like a 10 foot wide hole, 1 mile deep.

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