Seen in → No.70
This is certainly not going to “fix food” and I’m not a fan of farming fish like this but it’s an interesting premise and a field worth keeping an eye on.
Today there are some four million sprouting from grow racks stacked five stories high. Fish were in there, too—some 100,000 rainbow trout and 100,000 arctic char doing laps inside eight open tanks, each seven feet deep. One million gallons of water was flowing through this Urban Organics farm—from fish to plants and back again. Because it’s a closed-loop system, virtually no water is wasted except for a tiny amount (about 2 percent) lost to evaporation.