For those science nerds among us, illustrator Russell Walks has created this cool poster collecting fictional chemical elements from comics, literature, television, film and games, categorized by medium and origin (e.g. "Magically Occurring on Earth").

A quick glance shows such comic book-based substances as Amazonium (Wonder Woman), Dilustel (Captain Atom), Inertron (Legion of Super-Heroes), Marvelium (Captain Marvel/Shazam), Uru (Thor), Kairoseki (One Piece) and, of course, Kryptonite (Superman).

You can order "The Periodic Table of Imaginary Elements" for $25 through Walks' website.

(via Kotaku)