Mars and his friends have escaped the Martian colony and returned to Earth, to find that all the adults have vanished! A thrilling sci-fi adventure based on Sea

Mars is on Mars! But as techie colonists and scrappy rebels clash, can Mars and his friends survive long enough to discover the planet’s dark secrets? Based o

Being thirteen is happy, sad, humiliating, surprising, wonderful, awful, exciting, boring -- in other words, full of ups and downs. The thirteen-year-olds in Ga

Along the train lines north of New York City, twelve-year-old neighbors Myla and Peter search for the link between Myla’s necklace and the disappearance of Pe

Minerva Clark is a typical thirteen-year-old girl: she hates her hair, she hates her legs (which somehow manage to look both too fat and too skinny at the same