One researcher has died and three others are critically injured after an explosion at the Indian Institute of Science in Bengaluru. Such was the intensity of Hydrogen cylinder explosion that all the four researchers were flung away. The deceased has been identified as 32-year-old Manoj K, who was a native of Hyderabad. Kartik, Adulya and Naresh Kumar are grievously injured and are currently undergoing treatment. (INDIAONLINE)