Graphene could one day be involved in a new definition of the kilogram. To the left of gold in the periodic table are two elements — platinum and iridium — that are just as interesting in many ...

Iridium-based catalysts are needed to produce hydrogen using water electrolysis. Now, a team has shown that the newly developed P2X catalyst, which requires only a quarter of the Iridium, is as ...

However, iridium is one of the rarest elements on earth, and one of the major challenges is to significantly reduce the demand for this precious metal. But new options are already in the pipeline ...

They accidentally discovered a band of sedimentary rock that contained unusually high levels of a rare element, iridium. Chemical dating techniques put the rock at around 65 million years old.