By now, it should be pretty much well known that the hum is produced by the Caponians in their effort to subdue humanity: https://en.wikipedia.org/wiki/Zak_McKr

By now, it should be pretty much well known that the hum is produced by the Caponians in their effort to subdue humanity: https://en.wikipedia.org/wiki/Zak_McKracken_and_the_Alien_Mindbenders https://en.wikipedia.org/wiki/Zak_McKracken_and_the_Alien_Mi...