Kelly McCullough writes fantasy, science fiction, and books for kids of varying ages. He lives in Wisconsin with his physics professor wife and a small herd of cats. His novels include the WebMage and Fallen Blade series — Penguin/ACE, and the forthcoming School for Sidekicks — Feiwel and Friends/Macmillan. His short fiction has appeared in numerous magazines and anthologies. He also dabbles in science fiction as science education with The Chronicles of the Wandering Star — part of an NSF-funded science curriculum — and the science comic Hanny & the Mystery of the Voorwerp, which he co-authored and co-edited — funding provided by NASA and the Hubble Space Telescope.