friday/20

“A Walk Amongst Trees.” Hike in San Francisco’s Presidio with Bay Area Hazon director Deborah Newbrun, author of “Spirit in Nature.” Presented by Contemporary Jewish Museum. Starting location available at registration. 9:30 a.m. $15. www.thecjm.org.

sunday/22

Chabad of Marin 10-year celebration. Honoring Rabbi Hillel and Chana Scop with klezmer soul band and comedian Elon Gold. At Mill Valley Community Center, 180 Camino Alto, Mill Valley. 6 p.m. $85. www.chabadmillvalley.com.

saturday/28

Israeli folk dance party. Café Shalom presents monthly dancing and munchies. At St. Paul’s Presbyterian Church, 1399-43rd Ave., S.F. 7:30 p.m. $5-$8. http://groups.yahoo.com/group/cafeshalom.

sunday/29

“Israel Activism, Leadership by Example.” JCRC benefit honoring chair Lenny Kristal and featuring radio talk-show host John Rothmann, with music by Israeli singer Rivka Amado. At a private home in Berkeley, address provided upon registration. $50. RSVP by April 26. www.jcrc.org.