Scientists now believe that microwave weapons were used in the recent attacks on US diplomats in Havana.
To date, more than two dozen embassy personnel have been affected and nobody has been able to explain why.
The unique device acts as a third limb, enabling soldiers to aim and fire heavier weapons during combat.
A US government employee working in the city of Guangzhou has reportedly experienced similar symptoms.
A file recently released by the US government contains information about 'psycho-electric weapons'.
Scientists may have found an alternative explanation for the strange sounds heard by diplomats in Havana.
Doctors have found brain abnormalities in some of the victims of the mysterious acoustic attacks in Cuba.
One palaeontologist has suggested that Tyrannosaurus rex may have used its arms as vicious weapons.
A clip of the high-pitched sound that US diplomats have been hearing in Cuba has been uploaded online.
The US has ordered 15 Cuban embassy officials to leave the country over a failure to protect US diplomats.
Authorities in the US are urging people not to visit Cuba after a string of 'sonic' attacks on diplomats.
US diplomats stationed in Cuba have recently been subjected to a series of mysterious 'health attacks'.
A new Ministry of Defence project is aiming to test out the benefits of 'directed energy' technology.
The United Nations will be addressing the threat posed by sophisticated autonomous weapons platforms.
70-year-old Peter Lohr claims to have located five nuclear bombs inside a network of underground caverns.
Russian scientists have been determining how to use nuclear weapons to protect the Earth from asteroids.
The US Air Force is planning to equip its planes with high-tech laser weapons within only five years.
Two large stashes of bronze weapons and jewellery dating back 2,700 years have been found in Romania.
Two people in Poland claim to have found a long-lost train carrying a cargo of gold, gems and weapons.
Concerns have been raised over the development of new defensive and offensive space technologies.