My health project taught me that noise pollution is actually a serious health threat.
noise pollution n.
An annoying or a physiologically damaging environmental noise level.
Environmental noise, as from vehicles or machinery, that is annoying, distracting, or physically harmful. The physical effects can include hearing loss, tinnitus, stress, and sleeplessness. Noise pollution is usually considered in terms of its effects on human populations, though it is known to affect wildlife as well.