The mere thought of fingernails scratching a chalkboard can be enough to set some people on edge. Now, a new study may help explain why. Researchers say the shape of the human ear may amplify certain ...

Ever wonder why the sound of fingernails on a chalkboard drives you crazy? It's not just because it triggers bad memories of your grade-school days. Blame your primal instincts: The high-pitched sound ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Most people associate this cringe-worthy noise with words like ...

There are some noises that are so downright horrible, they make the hair stand up on the back of your neck just thinking about them. For instance, take the sound of nails scraping down a chalkboard.

The fingernails scratching the chalkboard produce sound in the frequency range between 2000 and 4000 hertz. Human ear is more sensitive to sounds in this pitch range. Moreover, the anatomy of ear ...