Australia on alert; Deadly radioactive device goes missing | Here is what it means

A highly radioactive capsule has gone missing somewhere along a 1,400-kilometer highway through the Western Australian desert. Its mysterious disappearance has sparked a nationwide radioactive danger alert as a massive search operation continues to locate the deadly device. The device is 8 millimeters in length and contains a small amount of the radioactive isotope caesium-137. Exposure to the substance could cause radiation burns or radiation sickness. Watch this video for more details.