Scientists: Acoustic episodes could be bizarre accident

“Acoustic interference without malicious intent” could have caused brain injuries to American diplomats in Havana, according to a study published earlier this year. Under one possible scenario, a covert ultrasonic eavesdropping device could have interfered with an ultrasonic jamming device, creating the “strange metallic sounds” that caused injury. Ultrasonic signals are not audible, but can … Read more