Dr. Prasad has served the Ministry of Environment, Forests and Climate Change, Government of India in various advisory committees on biodiversity conservation, ecosystem services, pollution control and abatement, environmental information systems and bioremediation of contaminated sites. He is an active visiting scientist in several international universities. He is the editor, co-editor, or author of 17 books published by leading international publishers and 190 journal articles and 118 book chapters/conference proceedings. He has made outstanding contributions to the fields of bioremediation, bioresources, biomass energy sources, bioeconomy and to the broad field of environmental biotechnology, all of which are his main areas of expertise. Meththika Suharshini Vithanage’s contribution to science has been recognized by The World Academy of Sciences (TWAS) presenting the Fayzah M. Al-Kharafi award in 2020. She is a Fellow of the National Academy of Sciences, Sri Lanka and Institute of Chemistry, Ceylon. She was selected as one of the Early Career Women Scientists by the Organization for Women Scientists in Developing Countries, Italy. Additionally, she received the Best Graduate Researcher Award for Natural Hazards by the American Geophysical Union in 2010. Her outstanding performance in research publications was recognized by the Presidential Awards, Sri Lanka for 8 consecutive years from 2011. She has co-edited 4 books with Elsevier Inc in 2019 and 2020.