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The North Bay Science Discovery Day is a free community festival bringing together 100+ organizations, supported by 70 sponsors and 150 volunteers, to spark young people’s wonder and curiosity about science, technology, engineering, and mathematics (STEM); to strengthen the San Francisco North Bay’s STEM learning ecosystem; and to connect the STEM industry, education, and public sectors to deepen and sustain young people’s STEM learning. 

Next Event: ​Saturday, March 7, 2026
10:00 a.m. to 4:00 p.m.
Sonoma County Fairgrounds
Santa Rosa, CA
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A public education event organized by the University of California, Agriculture and Natural Resources, 4-H Youth Development Program.  

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