Aryeh Abraham Frimer was born in Minneapolis, Minnesota, United States, to Rabbi Dr. Norman E. Frimer and Esther Miriam Frimer on November 24, 1946, but spent most of his formative years in Brooklyn, NY. He graduated summa cum laude with honors from Brooklyn College (Phi Beta Kappa; Sigma Xi) with a B.S. degree in Chemistry in 1969. During his undergraduate years he also studied at Yeshivat Kerem B’Yavneh in Israel and then Yeshivat Eretz Israel, Brooklyn NY, with Rabbi Judah Gershuni (one of the last students of Rabbi Abraham Isaac Kook) – ultimately receiving Rabbinic Ordination. While a graduate student in organic chemistry at Harvard University with Prof. Paul Doughty Bartlett, he was a National Science Foundation and Danforth Foundation Fellow. He was also appointed Assistant to the Hillel Director, serving as Rabbi to the Harvard-Radcliffe Orthodox Minyan from 1969-1974. Upon completing his Ph.D. at Harvard in 1974, Aryeh and his family moved to Israel becoming a Post-Doctoral Fellow at The Weizmann Institute of Science with Prof. Dov Elad. He then joined the faculty of Bar Ilan University in 1975, where he is the Ethel and David Resnick Professor of Active Oxygen Chemistry and former Chemistry Department Chairman. From 1982-1983, Frimer was appointed Visiting Medical Scientist at Brookhaven National Laboratory in Upton, Long Island, NY. From 1990-2004, he spent a sabbatical year and consecutive summers as a National Research Council Fellow and an Ohio Aerospace Institute Senior Research Associate at NASA‘s Glenn Research Center in Cleveland, Ohio. In June 2015, he received Bar Ilan University’s Excellence in Teaching Award, and in October 2015, he became a professor emeritus. Aryeh and his wife Esther (Neiman) Frimer have four children and twelve grandchildren and live in Rehovot, Israel.