Ohr Torah Stone Marks Rabbi Riskin’s 80th Birthday with 24-hours of Non-Stop Torah Learning Ohr Torah Stone celebrated Founder, Chancellor Emeritus and Rosh HaYeshiva Rabbi Shlomo Riskin’s 80th birthday with a most fitting tribute – through 24-hours of non-stop Torah learning, featuring a choice of two classes each half hour, given by 96 OTS rabbis, …