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 ...

The connection between Superman and Kryptonite is so firmly established in American culture that “Kryptonite” has become shorthand for everything from the idea that even the strongest have weaknesses ...

Deep in Serbia's Jadar Valley, scientists discovered a mineral with an uncanny resemblance to Superman's Kryptonite both in composition and name. Dubbed jadarite, this dull white crystal lacks the ...