Ah, see right there the story is bunk. I'm sorry, but NOTHING in that fucking movie can be used in the Superman Mythos. Now if a fanboy out there can find that chemical formula used in previous Superman Comics, then so be it. But like I said, NOTHING from SUPERMAN RETURNS can be considered a part of the Mythos. This is why Comics giving Hollywood their characters to use as they see fit is dangerous. Some chode "creator" decides to fuck with shit and suddenly it becomes fact. Case in point, The Joker did not kill Batman's parents. Sorry, but that was Tim Burton doing something different. This is also why Wikipedia can be dangerous. But that's another rant.