Noah has a big imagination, and he's using it to go on an even bigger adventure! He and his babysitter, Ruby, are zooming around Earth in their spaceship. With the help of Ruby's SpacePhone, they're learning about the people, places, and climates of the seven continents. Ride along as they explore landforms and landmarks from Asia to North America.

"It is only at the end of the world--among the glacial mountains, cleaving icebergs, and frigid waters of Antarctica--where Deb Gardner and Keller Sullivan feel at home. For the few blissful weeks they spend each year studying the habits of emperor and Adaelie penguins, Deb and Keller can escape the frustrations and sorrows of their separate lives and find solace in their work and in each other. But Antarctica, like their fleeting romance, is tenuous, imperiled by the world to the north"--Dust jacket flap.