Sustainable Claremont’s annual free and open to the public Earth Day celebration, featuring local sustainability organizations, giveaways and walking tours, will run from 8:30 a.m. to 1 p.m. at Shelton Park, where Bonita Avenue meets Harvard Avenue in the Claremont Village on Sunday, April 27. Walking tours take place from 11 a.m. to noon. RSVP at eventbrite.com, search for “Urban Foraging Walk.”

Inquire further at sustainableclaremont.org.