But what exactly is thorium? This radioactive metal is mined from solidified magma or lava. However, this silver-colored chemical element is not a nuclear fuel in itself. So while it is ...

The results showed that the distribution of the radioactive elements in rocks is not uniform, and that for some rocks quite large concentrations occur.

PROFESSOR SELLER:Atoms are actually breaking up. JON CHASE:'In this case, the radioactive element that we are looking at, 'is something called americium. 'Americium is gradually decaying to become ...

Here are some fascinating elements that you may never have heard ... during the Cold War, its radioactive isotope Kr-85 was used to estimate how quickly the Russian government was building nuclear ...

All subsequent elements are radioactive and therefore unstable, with a few notable exceptions such as uranium and thorium. But this fact did not deter a number of scientists from searching for ...

Uranium (chemical symbol U) is a naturally occurring radioactive element. In its pure form it is a silver-coloured heavy metal, similar to lead, cadmium and tungsten. Like tungsten it is very dense, ...

In 1902 Ernest Rutherford and Frederick Soddy discovered that radioactive elements, such as uranium and thorium, broke down into other elements in a predictable sequence or series. This amazing ...