He is a biochemist and biophysicist who is mainly known for Computational enzymology, Computer simulation, electrostatics and enzyme catalysis. He received 2013 Nobel Prize in Chemistry along with Michael Levitt and Martin Karplus for "the development of multiscale models for complex chemical systems". In 2006, he was awarded with President’s award for computational biology from the ISQBP. He earned his MSc (in 1967) and PhD (in 1969) degree in Chemical Physics sharing with Shneior Lifson and Weizmann Istitute of Science.
Talking about his personal life, he has stayed low profile in this regard. There is no any information about his love life. As, he is in his seventies he probably might have got married but this is just an assumption. His pictures can easily be viewed and downloaded from the internet. There are no rumors about him and hasn't been through any controversy that has let his personality and popularity go down.