Where/When: , 10000 Skyline Blvd., Oakland; Saturday, 11 a.m.
Why Go: From the lab to your lips, join Chabot as it hosts Fenton’s Creamery and Peet’s Coffee & Tea for a day of kitchen chemistry. Chabot’s teen volunteers, the Galaxy Explorers, will lead edible and inedible concoctions and demonstrations as visitors observe the chemical transformations.
Pricing: Free with admission; about $15
Where/When: Pleasant Hill Park, 147 Gregory Ln., Pleasant Hill; Saturday, noon-6 p.m.
Why Go: Enjoy beer tasting from several breweries and free music from Tommy Castro and other blues acts.
Pricing: $40, $50 day of event
Where/When: The Rellik Tavern, Benicia; Friday, 7 p.m.
Why Go: Visit the Rellik for the music of Brian Bergeron, a folk-rock singer/songwriter originally from Massachusetts.
4. Guided Nature Walk at Lynch Canyon
Where/When: Lynch Canyon Open Space, Vallejo; Saturday 10 a.m.-1 p.m.
Why Go: Look for birds, butterflies, dragonflies, lizards and mammals. Enjoy the beautiful views. Get fresh air and healthy exercise.
Cost: $5 per vehicle parking
Where/When: , 1025 Canterbury, Hercules; Saturday at dusk
Why Go: The public is invited to explore and learn the night sky through large and small telescopes and binoculars, with assistance from local amateur astronomers. Come and enjoy the experience of great nights under the stars.