Professor A.L Ramanathan’s area of interest/ specialisations are Environmental Geology, Hydro geochemistry and Hydrogeology (River, coastal and inland), Biogeochemistry, Climate – Glacier interaction: Impact on water resources especially on Himalayan river systems, Glacier meltwater hydrogeochemistry, glacier hydrology. His experience in his field is more than 35 years. His top achievement is that he has been listed as one of the top 2% of global scientist from India in environmental Engineering (PLOS Biology, Oct 2020 by Stanford university). He has completed 33 Ph.D.s, 15 M. Phil. and 41 M.sc students while he is currently supervising 8 Ph.D.s and 2 M. Phil’s. Presently 8 JRFs, SRFs, young scientists and 2 postdocs are working under his projects. He has completed 10 international and 17 national research projects. The overall Impact Factors for his Publications is 129 and citations are 7580 (Google scholar) and his h-index is 48. His total number of papers published in refereed journals are 225. He has been awarded IFS Sweden Young scientist (project) award (twice), INSA best teacher award, Energizing Baharat award (Water conservation from Bharath petroleum) etc.,