Plutonium that may have come from a reactor core at the Fukushima No. 1 nuclear plant was detected in soil on the premises, indicating fuel rods suffered heavy damage, Tokyo Electric Power Co. has ...

Demon Core ' is a research-use plutonium lump that was converted from a nuclear weapon that was planned to be dropped on Japan, and is known for dangerous criticality experiments that are performed ...

The Demon Core was meant to be the heart of the third atomic bomb. What made scientists so afraid of the Demon Core? In today's video we look at one of the most powerful materials found on this Earth, ...

A plutonium core from the Manhattan Project became deadly when two laboratory accidents exposed scientists to fatal radiation.