Turning waste materials into valuable products and resources has become a growing pursuit of environmental engineers and scientists. Fulton Schools Professor Bruce Rittmann has been at the forefront of the trend for two decades. Rittman, director of the Swette Center for Environmental Biotechnology at ASU Biodesign Center, is now aiding efforts to use greenhouse gases produced by wastewater treatment to generate electricity and to make biofuel with microalgae. Collaborating with ASU’s Center for Negative Carbon Emissions and Arizona Center for Algae Technology and Innovation and the city of Mesa, Rittman’s team is helping pioneer methods and technologies that promise to create sustainable resource reclamation processes that will help maintain a cleaner environment.