4th death anniversary of Har Gobind Khorana (January 9, 1922, Raipur, Punjab - November 9, 2011, Concord, Massachusetts, United States) -- an Indian-American biochemist who shared the 1968 Nobel Prize for Physiology or Medicine with Marshall W. Nirenberg and Robert W. Holley for research that helped to show how the order of nucleotides in nucleic acids, which carry the genetic code of the cell, control the cell’s synthesis of proteins.