Palladium Palladium Palladium is a chemical element with symbol Pd and atomic number 46. It is a rare and lustrous silvery-white metal discovered in 1803 by William Hyde Wollaston. He named it after the asteroid Pallas, which was itself named after the epithet of the Greek goddess Athena, acquired by her when she slew Pallas. Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). These have similar chemical properties, but palladium has the lowest melting point and is the least dense of them. More than half the supply of palladium
Silvery pigeon Silvery pigeon The silvery pigeon ("Columba argentina"), also known as silvery wood-pigeon or grey wood-pigeon is a species of pigeon found in Indonesia and Malaysia. It was thought to be extinct but wild populations rediscovered in 2008 near Masokut Island might represent this species. The silvery pigeon is not distinguishable from the pied imperial pigeon at a distance, although this is not necessarily true vice versa; as the pied imperial pigeon can vary between a pale grey, pure white and even yellowish colouration, it is often possible to tell that a bird is "not" a "C. argentina". At close quarters,