According to a 2011 survey by the AARP, by the time individuals reach 65 one in three suffers some hearing loss. And researchers think that at least 80 percent of people 80 years old and over have a significant level of hearing loss, much of it untreated. Why is this important if most Americans accept old-age hearing loss as inevitable and there's not much we can do about it? A researcher at the Department of Speech Language and Hearing Science at the University of Colorado