How loud can sound really get? The human ear can safely hear up to around 120 decibels. Beyond that, it starts to hurt. At 150 decibels, eardrums can rupture. But history has witnessed sounds far ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

A giant loudspeaker stood on the roof of a hangar at Mineola, L. I., last week, and radio and sound engineers trooped out to have a look, listen to its monstrous bray. Developed in the Bell Telephone ...