Comedian and climate activist Josh Burstein is to speak at the Tikkun Olam Shabbat at Congregation Shalom, May 17 at 6 p.m. Burstein is an Emmy Award winner and a graduate of the University of Wisconsin-Madison. Burstein will speak at 6 p.m., after the 4:30 showing of “The Last Glimpse,” a documentary about the Maldives,