Bachelor of Science with honors, University Calcutta, 1978. Master of Science, University Calcutta, 1980. Doctor of Philosophy, C.C.S. University, India, 1990.
Tutor, research associate University College Medicine, Calcutta, 1979-1982. Research fellow Indian Council Medical Research Government of India, Delhi, 1982-1984. Environmental officer Government India, 1984-1985, 1985-1986, senior information officer, 1986-1987, senior scientist, 1987-1988, 88-89.
Advisor to chief minister Government of Uttar Pradesh, India, 1989-1991, Government of Punjab, India, 1991-1996, senior advisor to government/governor, since 1996. Honorary professor Albert Schweitzer International University, Switzerland.
Founder, trustee, president Upalabdhi Trust for Developmental Initiatives, 1990. Member Institute Biology (chartered biologist), Asiatic Society (life), Zoological Society (life), New York Academy of Sciences, National Geography Society (United States), British Association Cancer Research, The European Association Cancer Research, The United Kingdom Environmental Mutagen Society, European Biologists Association (certified European professional biologist).
Son of and Renuka; married Kathakali Son of Sengupta, November 27, 1985. 1 child, Aishwarya Son of.