"Pink Noise" Helps Drown Out Unwanted Sounds

We've all heard of "white noise," sound that can be piped into an office, store, or elsewhere to help minimize the effect of unwanted sounds. Here's a story that looks at the newest development, something called pink noise: it uses the same concept as white noise, but instead uses natural sounds that reminds me of flowing water and other reminders of nature. This audio report is by a reporter whose office building is undergoing renovation, so she had a real reason for wanting to know if pink noise was effective.