The mineral jadarite has the same chemical composition as Superman’s weakness. It may be a problem for humans, too.

While Superman is taking his lumps throughout the superhero movie, The Green Lantern, played wonderfully by Nathan Fillion, ...

Superman's lack of weakness is actually his biggest weakness. Indeed, that god-like skillset makes him so across-the-board ...

Superman is often viewed as an old-fashioned hero, but did James Gunn’s new ‘Superman’ film manage to reboot the character ...

The connection between Superman and Kryptonite is so firmly established in American culture that “Kryptonite” has become ...

The cast and crew of “Superman” opened up to CNN about their personal kryptonite, the key weakness for the iconic superhero, ...

Black Kryptonite is one of the deadliest forms of Kryptonite in existence, and now it's back and worse than ever.

James Gunn's 'Superman' soared to the top of the box office this weekend, notching a win for Warner Bros. and DC Studios, ...

Superman faces a supercharged Toyman powered by Kryptonite in Superman Unlimited #3, hitting stores Wednesday with deadly ...