Around 10 percent of the U.S. adult population — over 25 million Americans — experience some form of tinnitus.

When the house falls silent in the dead of night, or after the kids have gone to school in the morning, I can hear a high-pitched, occasionally oscillating sound. If I focus on it, the noise grows ...

Gunfire, artillery, aircraft, helicopters, lawnmowers -- all are fairly common equipment heard or used by military personnel from the first days of their service. But all of them also cause long-term ...