Got ear plugs? You may want to sport them on the subway and other mass transit, researchers say

“Even though compared to subways, lower levels were obtained for commuter rail, buses, ferries and the tramway, chronic exposure to noise from these other forms of transit could also present a risk of noise induced hearing loss given sufficient exposure duration,” notes Mr. Neitzel. “The risk rises quickly with even small increases in noise levels. For example, 95 dBA is 10 times more intense than 85 dBA and 100 times more intense than 75 dBA.” The U.S. Environmental Protection Agency and the