The 12th Professor S Chandrasekhar Memorial Lecture was delivered by Prof. Santanu Bhattacharaya, Director, Indian Association for the Cultivation of Science, Kolkata. The talk titled Drug Design via Stabilization of Unusual DNA structure was attended by, among other invited guests, Members of the Governing Council and the Research Advisory Board of CeNS, the family of Prof. S. Chandrasekhar, faculty and research scholars.