Over the years, headphones have become very ubiquitous. You can buy them for a few dollars in the checkout lane at your local Walmart and many smartphones ship with a cheap generic pair of headphones right and the box. It also spend hundreds of dollars on audiophile grade headphones. One thing that all these headphones have in common is that they utilize speaker drivers on the inside that rely on moving parts to create sound. Scientists have created a new type of headphone that uses carbon nanotubes and features no moving parts.