A highly coveted children's toy from the 1950s is going on sale—and it contains real uranium. The Gilbert U-238 Atomic Energy Laboratory, which was released in 1950, was dubbed one of 'the 10 ...

It is so dense a small 10-centimetre cube would weigh 20 kilograms. The International Atomic Energy Agency (IAEA) defines uranium as a Low Specific Activity material. In its natural state, it consists ...