Gerald L. Schroeder is a scientist, author, and lecturer, who focuses on what he perceives to be an inherent relationship between science and spirituality.In 1965, Schroeder received his Ph.D. from the Massachusetts Institute of Technology in nuclear physics and earth and planetary sciences. He worked five years on the staff of the MIT physics department. After emigrating to Israel in 1971, he was employed as a researcher at the Weizmann Institute of Science, the Volcani Research Institute, and the Hebrew University of Jerusalem. His Doctorate was in two science fields, Earth sciences and physics. He teaches at Aish HaTorah College of Jewish Studies.He professes Orthodox Judaism, and his works frequently cite Talmudic, Midrashic and medieval commentaries on Biblical creation accounts, such as commentaries written by the Jewish philosopher Nachmanides. Among other things, Schroeder attempts to reconcile a young earth creationism Biblical view with the scientific model of a world that is billions of years old using the idea that the perceived flow of time for a given event in an expanding universe varies with the observer’s perspective of that event. He attempts to reconcile the two perspectives numerically, calculating the effect of the stretching of space-time, based on Einstein's theory of general relativity. Schroeder holds to a theistic evolution view. Gerald Schroeder lives in Jerusalem with his wife (the author, Barbara Sofer). They've had five children with a changing number of grandchildren.(Sources: Wikipedia, official website)