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Cosmic explosions play a critical role in our lives. Stated simply, without cosmic explosions we would not be here. Shri Kulkarni, A.D. White Professor-at-Large, Director of Caltech Optical Observatories and Professor of Astronomy reviewed the development of the history of cosmic explosions (a subject which is only a hundred years old) and ended with the great progress achieved in the field. Gamma-ray bursts, magnetars and supernovae have now entered the lay language.