By B.C. Wolverton, John D. Wolverton (Wolverton Environmental Services, 2001). Despite the devastating and demanding effects of increasing population and industrialization on the world's finite water supply, Nature has amazing abilities to cleanse itself. As well, there is a developing partnership between nature's cleansing powers and man's ingenuity to create environmentally friendly, cost effective and less energy intensive water treatments. Case histories, from NASA laboratory studies to operational municipal and industrial wastewater treatment systems, "provide compelling evidence that engineered farming of wastewater can ensure the safety of our water supply for us and future generations".