El profesor alemán Otto Lidenbrock descubre un escrito cifrado de un sabio islandés del siglo XII que afirma haber llegado al centro de la Tierra: Arne Saknussemm (basado en la figura de Arne Magnussen, escritor y recopilador de sagas nórdicas).
El profesor Lidenbrock pretende seguir los pasos de Saknussemm, y emprende una expedición acompañado por su escéptico sobrino Axel y el impasible guía islandés Hans.
El grupo ingresa

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When Sarah, an explorer mouse, meets Sam she gives him the courage to finally climb to the highest library shelves--and beyond--and he shows her how to explore the world through reading.

Coop Cooperson continues his adventures at the Dungeoneer Academy where he is the only human student at a school for future explorers.

In this book without words, a boy opens a door and invites the reader to explore the magical world on the other side.

As Cruz and his friends continue to search for the third piece of the cipher, a mysterious message arrives suggesting that someone close to him is working for Nebula, leaving Cruz unsure of who he can trust.

"Archer Helmsley's grandparents have finally returned home, but there are rumors they've brought a curse with them"--

Told in rhyming text, Princess Truly uses her super powers to explore the world, whether it is visiting penguins with her brother in Antarctica, or taking her timid pug Sir Noodles on a vacation in a rain forest.

Left stranded in the Amazon jungle when their plane crashes on their way back to England from Manaus, Brazil, four children struggle to survive for days until one of them finds a map that leads them to a ruined city and a secret hidden among the vines.

"Cuando Isabelita emprende un largo viaje con su padre, un famoso explorador, no imagina que en esta ocasión puede ser ella y no él quien haga un gran descubrimiento: el mayor tesoro no siempre se encuentra entre los objetos preciosos; solo hay que saber observar para descubrirlo"--Page 4 of cover.

Coop Cooperson is the only human kid at the Dungeoneer Academy, a school for the future explorers of the Land of Eem, a place full of monsters, mazes, danger; together he and his teammates (Oggie the bugbear, Daz, a boggart, and Mindy, an imp), are having their survival skills and understanding of the Dungeoneer's Code tested in a treacherous obstacle course--but many more challenges lie ahead, and so far Coop is failing miserably (as everyone points...