Currently alive, at 93 years of age.
1927 – Born on the 10th of April in New York City.
1948 – He received his B.S. degree, from the University of Florida.
1957 – He received his Ph.D. in Biochemistry from the University of Michigan.
– He began his postdoctoral work at the National Institutes of Health (NIH).
1959 – He began to study the steps that relate DNA, RNA and protein.
1960 – He became a research biochemist at the NIH.
1961 – He was married to Perola Zaltzman, a chemist from the University of Brazil.
1966 – He was awarded the National Medal of Science.
2001 – He was elected to the American Philosophical Society.