April 7, 2011 7:32 pm Shredding at the Exploratorium Learn the physics of skateboarding tonight at the Exploratorium’s After Dark event. US & World Videos 2:59 2 San Jose police officers shot, injured in gunbattle at hotel 1:46 Pursuit standoff causes traffic backup in Solano County 3:23 UC Davis finds brain sizes are growing 3:36 Waymo expands driverless taxi service 5:21 A closer look: 2 police officers shot, injured in San Jose