Who’s in town

Arianna Huffington, co-founder and editor in chief of The Huffington Post and author of “Third World America,” discusses what she views as the disappearing middle class. [6:30 p.m., Commonwealth Club, 595 Market St., S.F.]

Lectures

‘Health Effects of EMF’: Experts discuss emerging public health issues related to the widespread proliferation of electromagnetic fields. [Noon to 4:30 p.m., Commonwealth Club, 595 Market St., S.F.]

Larry Kramer: The digital entrepreneur, venture capitalist, educator and “C-Scape” author offers wisdom to help businesses thrive among digital media. [6 p.m., Commonwealth Club, 595 Market St., S.F.]

Literary events

Adam Gopnik: The New Yorker magazine staff writer appears in conversation. [8 p.m., Herbst Theatre, 401 Van Ness Ave., S.F.]

Sandra Park: The fiction writer and poet talks about “If You Live in a Small House.” [7 p.m., Books Inc., 74 Town and Country Village, Palo Alto]

Peter Balakian: The poet and memoirist talks about “Ziggurat.” [7 p.m., Kepler’s Books and Magazines, 1010 El Camino Real, Menlo Park]

Susan Supernaw: The Muscogee Creek and Munsee author and former Miss Oklahoma talks about “Muscogee Daughter: My Sojourn to the Miss America Pageant.” [7 p.m., Modern Times Bookstore, 888 Valencia St., S.F.]

Loteria celebration: The San Francisco Center for the Book hosts “Loteria Live!” The celebration features letterpress prints and activities inspired by the card game. [6 to 8 p.m., 300 De Haro St., S.F.]

Book group: The West Portal Book Club meets to discuss Elizabeth Strout’s “Olive Kitteridge.” [2 p.m., West Portal Branch Library, 190 Lenox Way, S.F.]

At the colleges

Anna Halprin: The dance artist, whose career spans 70 years, conducts a presentation of her work and practice, followed by a master class. [5:30 p.m., USF, Lone Mountain Studio Theater, 2800 Turk Blvd., S.F.]

Dino Patti Djalal: Indonesia’s ambassador to the U.S. talks about 21st-century challenges and how we can overcome them. [Noon, Philippines Conference Room, Encina Hall, 616 Serra St., Stanford University]

Lee Jeong Gwan: South Korea’s consul general in San Francisco gives a talk titled “South Korea Today.” [5:45 p.m., USF, Fromm Hall, 2130 Fulton St., S.F.]

Local activities

Musical Theater: The 42nd Street Moon company presents “Murder for Two: A Killer Musical,” a two-actor musical whodunit created by Joe Kinosian and Kellen Blair. [8 p.m., Eureka Theatre, 215 Jackson St., S.F.]

Dance presentation: The Mark Foehringer Dance Project presents narration and dancing from scenes of its upcoming “Nutcracker at the Zeum” production. [10:30 a.m., Sunset Branch Library, 1305 18th Ave., S.F.]

Food night: Nightlife at the California Academy of Sciences has a food theme this week. Food films, tastings and KQED’s “Road Trip Nation” are on the bill. DJ Jeff Stallings provides music. [6 to 10 p.m., Golden Gate Park, S.F.]