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RE: Is Vertical Farming the answer to solving overpopulation?
Build vertical? Not everyone has the expertise to do that. I think the root of the problem is that people are owning less and less land which forces us to build vertical. Wouldn't it be quicker and easier to grow food in your front/back yard?
There's still plenty of problems with backyard gardens like shade/sun ratios, weather/temperature, water, pollution and insects. if you spray your lawn for weeds or even if your neighbors do that the weed killer can contaminate the soil in your garden or if you have to use tap water to water your garden those chemicals in the tap water get absorbed by the plants. In vertical farming you can eliminate most if not all those variables.
Even the most technologically advanced LED indoor lights can only come so close to mimicking the sun which is still by far your best light source. Plants have evolved alongside that exact spectrum, plus it's free.