‘[An] irresistible account of a child’s imaginary 8,000-mile journey through the earth to discover what’s inside. Facts about the composition of the earth are conveyed painlessly and memorably.’ —SLJ. ‘An exciting adventure. . . . Illustrations [by Caldecott Medal winner Marc Simont] explode with color and action.’ —CS.

Best Books of 1979 (SLJ)
Children's Choices for 1980 (IRA/CBC)
A Reading Rainbow Selection

• Is a Blue Whale the Biggest Thing There Is? (Wells of Knowledge Science)
• What's Smaller Than a Pygmy Shrew? (Wells of Knowledge Science Series)
• How Do You Lift a Lion? (Wells of Knowledge Science Series)
• 0689845006
• The Berenstain Bears' Big Book of Science and Nature (Dover Children's Science Books)