(Don't) Pump up the Volume: Sound Waves Silence Whale Song
Tuesday, November 18, 2008 - 16:42
in Earth & Climate
The noise in the Pacific off the southern California coast has become 10 times louder over the past five decades because of the rumbling of commercial shipping vessels, the clicking of oceanographic research equipment, and the din of Navy operations and sonar systems--all of which are threatening whales that use the same frequency range to communicate. [More]