Tuesday, July 23, 7 p.m.
SoMa StrEat Food Park (428 11th St.)
The latest Ask a Scientist program featuring UC Berkeley’s Dr. Vernard Lewis will fascinate and possibly make you uncomfortable with a discussion of bugs, disturbing stories, and show-and-tell. Bring your questions — and appetite — for this event serviced by gourmet food trucks. Free (buy your own food), www.askascientistsf.com