Thirteen-year-old Aluna has lived her entire life under the ocean, just like all of the Coral Kampii in the City of Shifting Tides. But after remaining hidden from the Above World for centuries, her colony is in trouble, its survival ...

Stephanie Harrington always expected to be a forest ranger on her homeworld of Meyerdahl . . . until her parents relocated to the frontier planet of Sphinx in the distant Star Kingdom of Manticore. It should have been the perfect new ...

Guns gleamed dully. Bullet bandoliers and scars draped their bare chests. Ugly brands scored their faces. She knew why these soldier boys had come. She knew what they sought, and she knew, too, that if they found it, her best friend w...

Set at an experimental community on Mars in the year 2039, the Mars Diaries feature 14-year-old virtual reality specialist Tyce Sanders. Life on the red planet is not always easy, but it is definitely exciting. As Tyce explores his st...

Set at an experimental community on Mars in the year 2039, the Mars Diaries feature 14-year-old virtual reality specialist Tyce Sanders. Life on the red planet is not always easy, but it is definitely exciting. As Tyce explores his st...

Set at an experimental community on Mars in the year 2039, the Mars Diaries feature 14-year-old virtual reality specialist Tyce Sanders. Life on the red planet is not always easy, but it is definitely exciting. As Tyce explores his st...

A deadly comet catapults toward Mars. Only one thing can break up the comet before it does damage: the new Hammerhead torpedo. Tyce Sanders only has two weeks to master it . . . and someone's trying to stop him. In this exciti...