What’s going on with this silent threat that can stealthily damage your body in ways that can take years to reveal themselves ...

WASHINGTON -- Five years of preparation, eight months collecting a few drops of precious radioactive material from a nuclear reactor in Tennessee, five trans-Atlantic flights, millions in research ...

(CNN) -- As though it wasn't hard enough to memorize the names and atomic weights of 117 elements in the periodic table, scientists have now confirmed a new one. Researchers from Lund University in ...

Everything we can see and touch, and quite a lot that we can’t as well, is made of tiny particles called atoms. Some substances, like particles of this iron, contain only one kind of atom. Iron is an ...

The rare radioactive substance made its way from the United States to Russia on a commercial flight in June 2009. Customs officers balked at accepting the package, which was ensconced in lead ...

The chemical identity of individual atoms on a surface can now be determined using an incredibly powerful atomic force microscope. It means that scientists can now look at a mixed material and pick ...