Although Superman usually escapes the devastating effects of green Kryptonite, the mineral may still doom the Man of Steel to a slow and painful death. Under Earth’s yellow sun, Superman's cells ...

DC is introducing four new types of Kryptonite to the Superman mythos, each with a different effect on the hero's Kryptonian physiology. While poisonous green kryptonite is the most famous of Superman ...

Kryptonite was first introduced in a Superman radio serial episode in 1943. In 2004, workers at a drill site in Serbia’s Jadar Valley extracted a white, earthy silicate material unlike any previously ...

Most people are familiar with the concept of Kryptonite. The irradiated pieces of the planet Krypton are one of the few things capable of hurting Superman. Fewer people know, however, that there are ...