Following a flash in the sky, the sound has been witnessed fading away (See video on website report).
Some of the reports and recordings are NOT hoaxes.
The sounds are strikingly similar in various countries.
Some official government depatments are investigating.
Hoaxes have of course been involved (Steve Rapetti and others below)
Solar Wind interacting with Earths Magnetic Field during this solar high.
Advanced Military System - Communications and possible weapon/HAARP.
New Phenomena Associated with Escalating Climate Change.
A large object is entering the Solar System.
Earths Plates Are Moving - Magnetic Pole Shift.
Analysis and Findings along with theories from experts. Its getting interesting. Full updated report select header above.