April 11, 2012 11:14 am “The Math Guy” Keith Devlin, executive director of the H-STAR Institute at Stanford University, who is also known as “the Math Guy” on NPR, talks about little-known math trivia. US & World Videos 2:00 ‘Kayak-tivists' take Chevron protest out onto the Bay by Richmond 2:29 San Jose celebrates Cinco de Mayo with a pair of parades and festivals 0:22 Police investigating double stabbing in San Jose 3:07 Cinthia's forecast: Sunny, breezy, warming ahead 1:35 AANHPI celebrations in San Francisco's Japantown, Chinatown
