The ear consists of three parts: the outer ear, the middle ear, and the inner ear. Hearing begins when sound waves make it to the middle ear, causing the ear drum to vibrate. Explore the different parts and conditions of the ear.
Technology for hearing aids has advanced drastically since our grandparents wore those big, bulky ones wrapped around their ears. Now they're Bluetooth-enabled and can even translate foreign languages on the fly.
As you watch someone happily murder every song he belts out at the karaoke bar, you have to wonder whether it's caused by the growing bar tab, a total lack of embarrassment or simple tone deafness. Why do some of us hear music so differently?