Got ear plugs? You may want to sport them on the subway and other mass transit
Friday, June 19, 2009 - 08:49
in Physics & Chemistry
The U.S. mass transit system, the largest in the world, provides affordable and efficient transportation to more than 33 million riders each weekday. The system is generally considered one of the safest modes of travel. But recent public health studies have identified several sources of environmental hazards associated with mass transit, including excessive noise, a large and growing problem in urban settings.
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