Skurzynski, Gloria

While visiting the Everglades National Park with their parents, the Landon children uncover the mystery of dying manatees and learn important lessons about the natural environment.

The Landon kids and Nicky Milano are trapped in Alaska's Denali National Park after an avalanche and must use all their survival skills to stay safe and warm until they are rescued.

Includes "The Revolt" which details Corgan's escape, with Sharla, Ananda, and Cyborg, from Brigand to outer space, and "The Choice" in which Corgan tries living a more peaceful life on Nuku Hiva, but soon must confront his nemesis, Brigand, for the last time.

While she studies condors in the Grand Canyon a scientist's life is threatened, and the strange, hostile, teenage computer whiz in her family's foster care might be involved.

Fourteen-year-old Bindy Callister, afraid after discovering the truth behind the breaching of whales on the shores of Acadia National Park, must find the courage to share what she knows with her friends Jack and Ashley Landon, before it is too late.

Eleven-year-old Kevin finds himself alone and lost in the Utah desert, with only his wits to help him survive.

When their eleven-year-old orphaned cousin comes to live with them, the Kessler family has a difficult time, first, believing he has brought a poltergeist with him, and then learning to live with it.

In a future world where global contamination has necessitated limited human contact, three young people with unique genetically engineered abilities are teamed up to wage a war in virtual reality.

Fifteen-year-old Corgan, having won the right to live on the Isles of Hiva for his role in winning the Virtual War along with teammates Sharla and Brig, soon finds himself raising the increasingly hostile clone of Brig, a young mutant genius, who died shortly after the war.

While taking one last driving tour of Wyoming before moving out of state, eleven-year-old Angela accompanies her beloved seventy-eight-year-old great-aunt Hil to Yellowstone National Park, where Hil's strange behavior suggests she may be losing her sanity.