How to grow lettuce and fish indoors, all year long. Outside Duluth, ... Mageau and his crew built floor-to-ceiling racks made of PVC pipe, an idea they got online and spent six months refining.

Students at the University of Iowa are growing lettuce in a nontraditional way -- in the middle of the winter and without soil. Skip to content. Show You Care. Student of the Month.

Mageau and his crew built floor-to-ceiling racks made of PVC pipe, an idea they got online and spent six months refining. Each rack looks sort of like a ladder.