Japanese researchers at Mebiol have discovered an innovative new way to grow plants and crops. Substituting traditional soils with ultra thin films made of hydrogel, the scientists have been able to successfully block out unwanted bacteria and viruses in soil that can be harmful for plants. Essentially removing dirt from the equation, plant roots grow alongside the thin membrane of the hydrogel, a substance that is commonly found in diapers. The method isn't exactly a perfect replacement to traditional growing methods, since water is absorbed at a much slower rate.