Noise is produced by almost everyth

Noise is produced by almost everything we humans do. It makes sense, then, that we would get used to it. But unfortunately this attitude also leads us to accept excessive and damaging amounts of noise. Exposure to noise no louder than people shouting for eight hours a day, five days a week can lead to substantial hearing loss in a matter of a few years, yet we continue to work and allow others to work amidst heavy machinery, impact tools, and screaming turbofan jet engines. And we live along approach paths to the major airports of the world (view image). We accept hearing loss as a part of the normal aging process, even though in many cases it doesn't have to be.