Ghirardelli Chocolate Festival Ghirardelli Square, 900 North Point, SF; ghirardellisq.com/chocolate-festival. Noon-5pm, $25 for 15 chocolate tastings. Project Open Hand benefits from the 18th annual incarnation of this delectable festival. New for 2013, there'll be a "Chocolate and Wine Pavilion" for guests over 21, plus the ever-popular hands-free ice cream eating contest; chef demos; and a talk by Ghirardelli's "Chocolate Professor," Steve Genzoli, on the art of chocolate-making.Read more »
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Michael Hearst Booksmith, 1644 Haight, SF; www.booksmith.com. 7:30pm, free. The musician and author presents "Unusual Creatures," describes as a "nerdy, family-friendly sort of Ted talk" about some of the planet's most bizarre animals.Read more »