August 3, 2010 8:42 pm San Diego Explained: Grunion Run The voiceofsandiego.org reports on one of the weirdest and rarest mating rituals you will ever see. US & World Videos 2:56 Bill Walton's best friend and former broadcast partner talks about Walton's NBA legacy 2:50 Carlsbad house fire victim may have died trying to save his dogs 2:18 Remembering basketball legend and San Diego native Bill Walton 3:56 New documentary pays tribute to Blue Angels 2:11 Victims of January storms return to their homes in National City