As our population grows, we’re going to need a lot more farms to feed the planet. Yet, in a lot of places, farming is almost impossible. And much of the land we can use for farming is disappearing. With so many farms on land, could we build farms vertically to save space? Maybe it’s time to grow … up? Where do we need vertical farms? What would it take to build them?
How could they help to save the planet?
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