I had to post this. When I've heard on the radio that Kryptonite exists I was surprised but when I've heard that it has been found in Serbia I was convinced it's some kind of our weird jokes (our jokes are usually weird). But It's not joke! :blink:
A new mineral matching kryptonite's unique chemistry, as described in the film Superman Returns, has been identified by scientists at the Natural History Museum and Canada's National Research Council. It will be formally named Jadarite later this year.
The large green crystals of kryptonite have a devastating affect on the superhero. However, unlike its famous counterpart, the new mineral is white, powdery and not radioactive. And, rather than coming from outer space, the real kryptonite was found in Serbia.
Here is the link of natural History Museum London about
Kryptonite if you're interested.