Bioinformatics, the application of statistics and computer science to the field of molecular biology
He was a group leader in the biocomputing program at the European Molecular Biology Laboratory in Heidelberg, Germany, from 1987 to 1990; a visiting scientist at MRC Laboratory of Molecular Biology in Cambridge, United Kingdom, between 1977 and 1990; and a professor of chemistry at Fairleigh Dickinson University in New Jersey from 1971 to 1987.