The New York Public Library Incredible Earth Discover ancient fossils and vast oceans. Explore devastating earthquakes and explosive volcanoes. Find the answers to your questions about our incredible Earth . How was Earth formed? See page 3. When did life begin? See page 30. If you dug a hole to the center of Earth, what would you find? See page 46. What is a volcanic bomb? See page 78. What is the largest active volcano in the world? See page 85...