The fourth annual Green California Summit and Exhibition wrapped up today at the Sacramento Convention Center, giving attendees a look at new green technology that provided a glimpse into what the world could look like in the near future. The summit featured keynote presentations from four speakers: 15-year-old Alec Loorz, founder of Kids vs. Global Warming; Noel Perry, Next 10 founder; David Roland-Holst, director of the University of California at Berkeley's Center for Energy, Resources and Economic Sustainability; and Fran Pavley, the state senator who authored Assembly Bill 32, the Global Warming Solutions Act of 2006. The summit also offered classes on green building codes, new media