Today my guest is Prof Sachidanand Tripathi. Dr Tripathi is an acclaimed Indian scientist in atmospheric sciences. He is a professor at IIT Kanpur and has won India's top science award, the Shanti Swarup Bhatnagar Prize, for his work. He is an elected fellow of the country's major science academies and holds the prestigious J.C. Bose Fellowship. His research focuses on Earth's atmosphere, oceans, and climate. In this episode we discuss the recent news about the air quality in Delhi, Findings of his research in this field and the measures that are being taken to improve the air quality in India.