The WW1-era explosive device was discovered in a harvest of potatoes sent to a Hong Kong crisp factory.
Students who are bored of throwing the javelin or discus can now engage in a spot of grenade-tossing instead.
Duke Robotics has come up with a weaponized drone capable of aiming and shooting while in mid-air.
Police in China were left shocked after the man admitted to using the explosive device as a nut cracker.
A Colombian soldier had been on patrol when he accidentally fired a grenade launcher at his own head.
The Star Wars inspired robot has been designed to assist in fighting fires and to throw grenades.
A soldier blinded by a grenade attack in Iraq is helping test out a new device that allows him to 'see' with his tongue.