Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
5.0
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2602
Points per Word
0.000192
Description
Travel to the ends of the Earth and observe some of the world's toughest creatures. Find out how long whales can hold their breath, why penguins don't get frostbite, and how water bears can live through almost anything, even being cooked.