Terrifying booms known as 'skyquakes' have echoed around the world for over 200 years, but no one knows why. Could they be caused by meteors, military exercises, or something stranger? Scientists are stumped—watch to uncover the mystery behind these unexplainable sounds.<br />Location: London<br />WooGlobe Ref : WGA180752<br />For licensing and to use this video, please email licensing@wooglobe.com
