Bootstrap Business explains how much noise a sound barrier can really block. What to know about barriers blocking sounds on roads and highways.

A sound wall along Interstate 680 will reduce freeway noise for many residents, but not all. Those left out are not pleased and say it would not take much to fix the problem. Youngstown-based A.P.

We speak to health expert Elyse Wagner about how the natural sounds of green noise may help you to banish insomnia for good. Green noise is a frequency of white noise. What does that actually mean?