Sitting at the bottom of this row of chemical workhorses, this spectacularly radioactive element would be toxic to anyone who came near it, if only it could stop itself from vanishing. In fact, it ...

Uranium enrichment concentrates one specific type of the atom to create a substance that can generate massive amounts of ...

This substance is the most radioactive natural element, a million times more so than uranium. It is so radioactive that it gives off a pale blue glow. Yet it would still take the Curies another ...

Radioactive decay is the strange and almost mystical ability for one element to naturally and spontaneously transmute into another. In the process, those elements tend to emit deadly forms of ...

In 1945, Oak Ridge National Laboratory discovered a rare radioactive element called promethium. Nearly 80 years later, scientists have unlocked it.

A radioactive substance, either as an element or as a compound, may enter the body by one or more of four routes — namely, the lungs, the digestive tract, through cuts or abrasions, and the ...