Last year, the Federal Aviation Administration placed a freeze on the number of commercial tourist flights that may take to the skies over the park. Apparently, human generated noises from airplanes, boats and other man made sources are drowning out the park's natural sounds. It has reportedly gotten to the point where wildlife is becoming adversely affected. Reportedly, during daylight hours, tourist planes can be heard every nine seconds. Every NINE seconds.
Humans can be just too darn noisy for their own good.
Now, the government is shushing all of us if an effort to maintain natural order in one of our most important national treasures. Your would think that we could all breathe easier now. But, not quite yet. You see, the air has become dirtier and dirtier in the Canyon as well. Again, its us humans.