Wow! I just discovered aquaponics, a farming technique where you farm fish and use the water they grow in, which is enriched with highly nutritious wastes from the fish, to water and fertilise plants. This sounds like a genius method of waste handling wast and easy, free fertilisation; moreover, you get double productivity: fish and vegetables!
At the moment, I am researching the issue of lack of clean drinking water in the third world, a more heart-felt topic for me, but I will surely look more into aquaponics later, since it seems like a potent solution to plant farming in areas without fertile soil.
Here is the YouTube video where I had the topic introduced.
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