Explore the hidden world beneath your feet. This book digs down into soil, and uncovers amazing secrets: animal burrows, telephone cables, murky caves and buried treasure. And deep, deep below you'll find the Earth's core, which is still a mystery-even to scientists.
Despite the horrors of World War II, a French teenager pursues her dream of becoming an opera singer, which takes her to places where she gains information about what the Nazis are doing--information that the French Resistance needs.