A Pocketfull of Kryptonite

Scientists have actually managed to discover a new mineral that matches the description of kryptonite that causes Superman to lose his superpowers.

Kryptonite, which robbed Superman of his powers, is no longer the stuff of comic books and films.

A mineral found by geologists in Serbia shares virtually the same chemical composition as the fictional kryptonite from outer space, used by the superhero's nemesis Lex Luthor to weaken him in the film "Superman Returns."

"We will have to be careful with it — we wouldn't want to deprive Earth of its most famous superhero!," said Chris Stanley, a mineralogist at London's Natural History Museum.