The Songbird Clear isn't a hearing aid -- it's a sound enhancement device that fits into your ear and makes everything louder. And you can buy it without a doctor's note.

For people with hearing loss, trying to hear in noisy places like airports and theaters, can be tough. But advocates are spreading word of not-so-new technology that allows sound from loudspeakers ...

The glass speakers from Greensound Technology look like little more than a shaped pane of glass sitting atop a base, but use the glass to project the sound and deliver "true 360 degree sound." ...