The Cuban Missile Crisis of October 1962 was a direct and dangerous confrontation between the United States and the Soviet Union during the Cold War and was the moment when the two superpowers came closest to nuclear conflict.
Colossus (born Piotr Rasputin, also known as Peter Rasputin) is a mutant who can cover his entire body in an incredibly dense, organic metallic layer, which grants him incredible levels of physical strength and durability.
Cesium. Cesium (Cs) is a waxy, silvery-gold metallic element that is the softest of all metals. Cesium is one of three metals (gallium and mercury) that are liquid at or near room temperature. Cesium is a very reactive metal, that when mixed with cold water, produces an explosive reaction. Its melting point is so low that it will melt if it is held in the hand.