After he and his mother move from California to Montana to live with his grandfather, thirteen-year-old Guy gradually adjusts to the unfamiliar surroundings, makes a friend, and learns to deal with a bully, with the help of his Frisbee-catching dog, Streak.

This book explains what invasive species are and the damage they cause to local ecosystems and economies and discusses how scientists are working to combat these encroaching organisms.

Twelve-year-old detectives Slate Stephens and Daphne McSweeney risk their lives to find lost gold from Montana's vigilante era while working to recover two priceless Charles Russell paintings stolen from a university art museum.

Reveals the animal life that lives in the deepest oceans and examines the technology that allows scientists to conduct research in areas characterized by trenches, vents, and seeps.

A closer look at some animals that seem scary or creepy reveals that they may not be so odd or frightening after all.

Learn about the marsupials of the world, including opossums, kangaroos, koalas and others.

Amy and her mother look for a very special butterfly while attending the annual Fourth of July Butterfly Count at a prairie restoration site. Includes factual information about butterflies and how to attract and watch them.

"A family of beavers love their pond, which they've worked hard to turn from a bedraggled landscape into a thriving wetland. But when a family of otters move in and start reaping the rewards of the beavers' efforts, the only thing the beavers can do is tolerate their new neighbors as best they can. Despite the fact that the otters can be rather annoying, the two species eventually strike a balance, and in the process benefits the rich new ecosystem...