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 ...

Kryptonite is one of those things that can get a little annoying when it’s overused. The current Emerald Era could easily fall into that trap, but Superman Unlimited #2 actually makes the whole thing ...

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 ...

Supermanis one of the most powerful beings in all of DC, fueled by Earth’s yellow sun and nearly invincible against most forms of harm. The Man of Steel's speed, strength, flight, and heat vision make ...

Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook The connection between Superman and Kryptonite is so firmly established in American culture that ...

The mineral jadarite has the same chemical composition as Superman’s weakness. It may be a problem for humans, too. By Andrew Paul Published Jul 14, 2025 11:05 AM EDT Get the Popular Science daily ...