Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.4
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
4035
Points per Word
0.000248
Description
Learn about some of the bravest explorers in history as they venture up the highest mountains, down into the deepest seas, across parched deserts and even into space. Contains disturbing imagery.