Nim loves her island home and the animals she shares it with, even while her scientist father is away doing research, but trouble is on the way and a new e-mail friend could be the only one who can help.

In her third gripping adventure, Nim unearths an amazing opalized fossil, but this discovery puts her island in terrible danger Nim lives on an island with her father, Jack, a marine iguana called Fred, a sea lion called Selkie, and their friend Alex Rover, the adventure writer. Nim's island is the most beautiful place in the world, and she wouldn't live anywhere else. When Jack invites a group of scientists to visit, they bring their children as well. But two of the scientists have plans other than studying algae. By the time Nim discovers what they really want, and what they will do to get it, the children are in grave danger. And so is the island! Nim must choose between saving a natural treasure and saving someone's life.

All three Nim novels - Nim's Island, Nim at Sea and Rescue on Nim's Island - collected in one edition to celebrate the 21st Anniversary of the original publication of Nim's Island.

While her scientist father is away doing research, eleven-year-old Nim--who lives on a remote island--emails her favorite fictional character and asks for help, and is surprised at the results.

Nim lives on the most beautiful island in the world with her father, Jack, a marine iguana called Fred, a sea lion called Selkie and their new friend, Alex Rover. Nim is as free as a bird, and as happy as a girl could be. But when Alex flies away in the sea plane without saying goodbye, and Selkie is captured by villains from a cruise ship, Nim must risk everything to bring them back. Her dangerous rescue mission takes her far across the ocean to New York City. It's a good thing she has Fred and two new friends by her side. Readers aged 8+ will fall in love with Nim and her wonderful island friends!

Living on a nearly deserted island with her scientist father, eleven-year-old Nim finds friends in the animals she encounters and the imaginary friends she creates from characters from her favorite books.

The work covers military signaling and the weather service. The latter brand was transferred in 1890, to the Weather Bureau, organized under the Dept. of Agriculture.

This is the only book solely about Jupiter's moon Io, the most volcanically active body in the solar system. Written by experts in the field, many of whom took part in the Galileo mission, the book reviews the basics about Io and its unique space environment. Coverage includes all subjects, where the Galilio mission has shed new light on, with some emphasis on Io's most remarkable characteristics: its active volcanism.