Dr. P. S. T. Sai is a Professor in Department of Chemical Engineering at the Indian Institute of Technology Madras. He has been actively involved in teaching and research for the past 30 years. His research interests include fluidization, reaction engineering and air pollution control. He has published over 90 research papers. His paper entitled ‘Esterification of ethanol with sulfuric acid: A kinetic study’ was awarded as the best paper published in the 12-month period in The Canadian Journal of Chemical Engineering in 2001. He is also recipient of Chemical Weekly Award, IIChE NRC award and Kuloor Memorial Award in 2012.