Disposable diapers are practical but they create a great deal of waste. The start-up DYCLE (Diaper Cycle) tests how valuable top soil can be made out of waste. Together with the Technical University Berlin, the University of Tübingen, diaper manufacturers, the Zeri foundation, and other partners, the company is developing a cycle system that enables compostable diapers to be converted into fertile black soil. Back in the summer of 2015, Berlin families tested the project successfully in practice. In the future, the top soil obtained is to be used for organic fruit farming, closing the cycle.