March 20, 2012 1:34 pm Social Media Spreading the News A look at how social media is changing the face of journalism with NBC 7’s Catherine Garcia and voiceofsandiego’s Scott Lewis in this San Diego Explained. US & World Videos 2:30 13 cars impounded, 2 people arrested after sideshows in San Diego County: Police 0:45 Knicks defeat 76ers, advance to Eastern Conference second round 3:06 Sporting-goods store looks back at seven decades, 30K varsity jackets 2:51 Lemon Grove met recent affordable housing goals, but can it keep up the pace? 2:08 Man accused of killing El Cajon dentist appears for mental competency hearing