Karl G. Linden, Ph.D., is a Professor of Environmental Engineering, The Mortensen Professor in Sustainable Development and one of the faculty Co-Directors of the Mortenson Center in Engineering for Developing Communities (MCEDC) at The University of Colorado Boulder. Dr. Linden’s more than 15 years of research has investigated novel water and wastewater treatment systems, including advanced, sustainable, appropriate, and innovative systems for disinfection of pathogens and oxidation of chemical contaminants. Internationally, he and his students have worked on water and sanitation projects in Peru and Rwanda, and he was the PI of the CU Boulder team working on the Bill & Melinda Gates Foundation Reinvent the Toilet Challenge. In 2016 the University of Colorado Boulder has been selected by the U.S. Agency for International Development (USAID) to lead a five-year cooperative agreement to better understand how to improve the sustainability of water, sanitation and hygiene (WASH) interventions in the developing world. Professor Karl Linden, associate director for research Amy Javernick-Will and associate director for outreach Rita Klees will coordinate the efforts of seven organizations in sub-Saharan Africa and southeast Asia for the USAID project.