Jimmy Hoffa
His body was never found. Some think that he was the victim of a mob hit. Others think that the Teamsters murdered him due to the betrayal of him going to jail. He was finally declared dead seven years after he disappeared. One conspiracy says that he's buried underneath Giants Stadium in New Jersey.
Humming from the Sky
Cities across Minnesota have reported bizarre "humming" sounds coming from the sky. In 2011, locals in Alexandria, Minnesota, caught the sounds on camera. In 2018, another humming sound was recorded in Minneapolis.