Hey guys. I wanted to address the volume of the sound clips. Unfortunately they couldn't be much louder because of quirks in YouTube's automated system for identifying copyrighted music. The sounds are really cool... so cool that they are often sampled in music tracks that are part of the system despite being in the public domain. A particularly egregious example of this is the sound of Saturn's rings as recorded by NASA's Cassini-Huygens space probe. Look up the sounds of Saturn's rings on YouTube and you'll find that many of the videos have been claimed by a band called Nebula simply because they sampled NASA's recordings in one of their songs. In short, I decided that I'd rather make more videos than deal with incorrect claims.