Dr Avishek Ranjan is Assistant Professor in the department of Mechanical engineering at Indian Institute of Technology Bombay. His areas of research include applications of fluid mechanics in energy & environment, geophysical & astrophysical flows, magnetohydrodynamic flow in engineering: liquid metal batteries, continuous casting of steel, aluminum reduction cells. One recent area of his research interest is studying the transport of sneeze/cough droplets so as to minimize the spread of infectious diseases in hospitals and public transport. Before joining IIT Bombay in 2018, he was a postdoctoral research associate in the department of Engineering at the University of Cambridge, UK where he also completed his PhD funded by the Dr. Manmohan Singh scholarship from St. John’s College Cambridge. Before his PhD, he completed a MS (by research) from the department of Mechanical engineering, IIT Madras, India where he worked on biofuels for engines. He has also worked in the manufacturing unit of Tata Cummins Ltd. Jamshedpur for one year, after completing B.Tech. (Mechanical engineering) from NIT Jalandhar, Punjab, India with a Gold medal. Dr. Ranjan has published several papers in reputed fluid mechanics and geophysics journals such as Journal of Fluid Mechanics, Physical Review Fluids, Physics of Fluids, and Geophysical Journal International. He enjoys teaching courses on fluid mechanics at IIT Bombay.