Dr. Hussen is a Full Professor of Environmental Analytical Chemistry at the Center for Environmental Science, Addis Ababa University, Ethiopia. Currently he is a Fulbright visiting scholar at Clemson University, USA. He earned his BSc and MSc in Chemistry from Addis Ababa University and completed his PhD in Analytical Chemistry through a joint program with Addis Ababa University and Lund University, Sweden. With over 25 years of teaching, research, and academic leadership, he has become a national leader in advancing environmental analytical chemistry. His research focuses on sample preparation techniques for environmental analysis, more recently, pioneering the development of microfluidic paper-based analytical devices (µPADs) for environmental monitoring in Ethiopia.