Kal-El is indeed a great immigrant, but as James Gunn’s movie paints him, we’re just lucky he’s one of the good ones.

When Kryptonite is used on a Kryptonian from a different universe, it often has strange effects. Yet few are stranger than what happens when Earth-3's Superman copy, Ultraman, experiences Kryptonite.

Kryptonite was first introduced in a Superman radio serial episode in 1943. Superman ’s only major weakness—aside from bright red capes—is kryptonite.

Superman director James Gunn confirms that he initially had conversations with Bradley Cooper about Lex Luthor before deciding on Nicholas Hoult.

FILE-- Actor and avid horseman Christopher Reeve, seen here in his role in the film “Superman,” is paralyzed and cannot breathe on his own after breaking his neck in a weekend horse-riding ...

Superman intervenes because people will die—not because he’s taking a side. This theme echoes throughout the film. When he fights the kaiju, he tries to stop it without killing it.

In order to keep Superman's nose out of his business, he's impregnated the whole thing with kryptonite. It therefore makes sense when Luthor's hired goons are able to beat the Man of Steel to a ...

Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday. Superman ’s only major weakness—aside from bright red capes—is kryptonite.