While this event seems to be a recent one, say in the last year and a half, too many people from all walks in life ARE witnesses to the various sounds. From all over the world and at various points, not just the northern or southern hemisphere. Why?, I mean Why now at this time period?? I believe it has to do with the changes with the SUN! That is fact, the Sun has been changing, with the latest X4.5 flare on the 7th of March. Maybe the two are connected, we will see. But the Sounds are REAL!!! Maybe not all reports, but most of them are backed up by news channels, mayors, police etc.