Skurzynski, Gloria

Visiting Zion National Park with his family, twelve-year-old Jack encounters two mysteries, the strange behavior of a band of wild mustangs and the possibly sinister actions of his new foster brother, a Shoshone boy.

Jack Landon's sister is held hostage by people asking for Leesa, a fourteen-year-old foster child staying with his family, and they are all led to a missile testing ground in Death Valley National Park, where bighorn sheep have been mysteriously dying.

Nine-year-old Caitlin is always trying to help her neighbors, her friends and her mother, but the results often aren't what she intends.

An introduction to robotics, focusing on such topics as the robot revolution, bionics, and avionics.

While lost in a tunnel at Carlsbad Cavern, thirteen-year-old Jack, eleven-year-old Ashley, and their eight-year-old foster brother, Sam, think bats and darkness are their worst problems, until they stumble across thieves.

While at St. John National Park in the Virgin Islands for a seminar on coral reefs, the Landons help a wealthy thirteen-year-old find his birth mother, who he believes is in danger.

Retells three Lebanese folktales concerning the making of two fools and the undoing of a clever faker.

While lost in a tunnel at Carlsbad Cavern, thirteen-year-old Jack, eleven-year-old Ashley, and their eight-year-old foster brother, Sam, think bats and darkness are their worst problems, until they stumble across thieves.

Jack, Ashley, and their unreliable new foster sister set out to solve the mystery of why whales are beaching themselves at Acadia National Park.

Explains the scientific principles and technology involved in telephone calls and facsimile transmissions and discusses future possibilities in telecommunications.