Helena Omiple, 7, gets close enough to catch some diet soda in her mouth during the 'Soda and Mentos Reaction,' demonstration put on by SRJC's Donald Laird and his son Sutter during the Bay Area Science Festival North Bay Discovery Day held at the Sonoma County Fairgrounds, Saturday, October 27, 2012. (Crista Jeremiason / The Press Democrat)

Bay Area Science Festival

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