Down to Earth December 9, 2021 6:51 pm Watch: Noise Pollution Serves as Threat to Marine Life Cargo ships, naval weapons testing, sonar and the oil industry are the most notorious underwater noise polluters, reports NBC 7’s Dagmar Midcap US & World Videos 2:53 Beach closure from Surfrider Way to Tyson Street in effect due to Oceanside Pier fire 2:41 San Diego lifeguards describe fighting Oceanside Pier fire 2:58 NASA researchers aim to enhance safety, flight operations in wildland firefighting 2:47 San Diego welding students recreate replica of historic Black Family Statues 4:29 Escondido woman warned husband may be a killer: Dateline