Helium.com | Ecology & Environment | Causes of noise pollution http://www.helium.com/knowledge/226965-noise-pollution.xml Helium.com > Ecology & Environment > Causes of noise pollution en-us Copyright Helium.com Wed, 01 Apr 2009 05:07:15 GMT Wed, 01 Apr 2009 05:07:15 GMT When you live in an urban area you can never get away from noise. Traffic, radios, televisions, sirens from emergency vehicles, the noise of other... http://www.helium.com/items/1673849-causes-of-noise-pollution Sun, 06 Dec 2009 11:02:35