The mystery sounds that sickened US diplomats

Doctors and scientists are still trying to determine what caused three dozen US diplomats in Cuba and China to suffer symptoms such as severe headaches, nausea and fatigue. The victims reported hearing high-pitched sounds in their hotel rooms or homes. Some suspect the sounds were attacks with unconventional weapons, but one US researcher says it was likely microwave radiation probably caused by bugging or surveillance.
(Photo: AFP)