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What do you guys think of vertical farming?
(slrpnk.net)
Vertical farming, the best solution to support an ever growing population or just a scam?
IMHO it has a lot of potential but not being able to grow grains really is something that should be tackled sooner rather than later. But I could see this being used by self sustaining communities to provide lots of food while using very little space. And it's technically more environmentally friendly than just using vast stretches of land to produce the same amount of food.
As I understand the concept, it is basically farms between houses, in houses. There's an opportunity cost: You could also have people living in that space.
I believe housing people is better than housing crops, for social reasons (housing prices high), but also due to economies of scale. A denser urban area makes all utilities and public transport more efficient.
Walkable cities are worth striving for. Some things like living, working, social activities cannot be outsourced without breaking that concept. Delivery with goods can be outsourced.
Does the farm have to be within town, is it more important than other things which could be in the same place? A truck can drive quite a distance in a few hours, which is short enough for perishable goods.
The type of vertical farms most people are talking about are under-ground or on roof-tops and occupy next to no space that could otherwise be used for housing.
The roads required for trucks take up more space in cities than those vertical farms would.