Climate change: Rep. Jackie Speier, D-Hillsborough, hosts a “conversation on climate change” with UC Berkeley Professor Daniel Kammen and Impossible Foods CEO Pat Brown. The event is from 7 to 8 p.m. Wednesday at the San Francisco Zoo, Sloat Boulevard and Great Highway. Tickets required; event will also be streamed on Speier’s Facebook page. Information and tickets: http://bit.ly/2uZ9ELJ

Virginia candidate: The Sister District Project is raising funds for Kathy Tran, a candidate for the Virginia House of Delegates, by hosting a discussion with Rita Bosworth, the Sister District Project founder, and former California Assemblyman Ted Lempert. 7 to 9 p.m. Thursday at Half Moon Bay Brewing Co., 390 Capistrano Road, Half Moon Bay. Information: www.goo.gl/d2KVLu

Sexual minorities: Phillip Ayoub, assistant professor of politics at Drexel University, discusses the recent history of transnational movement in Europe and the reasons for states’ varying approaches to legal recognition for LGBT rights. His talk begins at 4:10 p.m. Thursday in Room 382 of the humanities building at San Francisco State University, 1600 Holloway Ave. at 19th Avenue. Admission is free. Information: https://lca.sfsu.edu/events/2017-08-31-231500/817163.

Town hall: Rep. Mike Thompson, D-St. Helena, hosts a town hall meeting at the Crockett Community Center, 850 Pomona St., from 10 to 11 a.m. Friday. Information: www.facebook.com/events/336289353489096

Town hall: A forum for students in West Contra Costa middle and high schools and Contra Costa College. Speakers include members of the Richmond and El Cerrito city councils and other government panels. The event, hosted by Contra Costa Young Democrats, is at 5 p.m. Sept. 7 at John F. Kennedy High School, 4300 Cutting Blvd., Richmond. Information: www.youngdems.org

Voter registration: Volunteers will help new U.S. citizens register to vote after swearing-in ceremony. Sponsored by Democracy Action, which works to advance Democratic candidates. 10 a.m. to noon Sept. 7 outside the Paramount Theatre, 2025 Broadway, Oakland. Information: https://demaction.us

Picnic in the park: Assemblyman David Chiu, D-San Francisco, hosts a picnic in Golden Gate Park’s Marx Meadow picnic area Sept 10. RSVP: http://chiuassembly.ngpvanhost.com/form/-1081566039410473216

Town hall: Rep. Jared Huffman, D-San Rafael, holds a town hall at 7 p.m. Sept. 15 at Dance Palace, 503 B St., Point Reyes Station. Information: http://bit.ly/2vpinSI

To list an event, email Trapper Byrne at tbyrne@sfchronicle.com.