Lag BaOmer: A Celebration of the Mahn in the Midbar - May 2, 2018 - Rabbi Aharon Adler gives a weekly shiur at the Israel OU Center in Jerusalem at 22 Keren Hayesod Street, on Wednesday mornings, from 9 - 10 AM. Rabbi Adler is discussing topics in science and Torah. Because Lag BaOmer is the next day, Rabbi Adler focuses on that topic.