Don't know if you know the answer to it, but it's worth a shot. There have been some strange noises like a humming or ♥♥♥♥♥et. Every now and then it comes and goes but worldwide anyone can hear it. The last time I heard it was two days ago and it was strong. The next time I had heard it was in June. I want to know what type of theories you may have on this or some type of evidence if possible. Thanks. I really am astounded by this phenomenon that came out of nowhere.