A Walk in the Desert, 2nd Edition

Where is the Bermuda Triangle?

A Walk in the Prairie, 2nd Edition

Spooky Lakes: 25 Strange and Mysterious Lakes that Dot Our Planet

A Walk in the Tundra, 2nd Edition

A Walk in the Rain Forest, 2nd Edition

Masters of Disguise: Amazing Animal Tricksters

Lost on a Mountain in Maine

Your Digestive System

Zombie Makers: True Stories of Nature's Undead

Your Muscular System

A Walk in the Deciduous Forest, 2nd Edition

Nature's Ninja: Animals with Spectacular Skills

A Walk in the Boreal Forest, 2nd Edition

When Lunch Fights Back: Wickedly Clever Animal Defenses