This book takes young people on a journey through time, through space, and through the story of life on Earth. Be amazed by the simple things that scientists use to tell time. These things include records of time that can be examined by the youngest of explorers. How old is the Earth? What is the oldest thing of all? Were did life come from? These are just a few of the BIG QUESTIONS that readers will investigate in: Answers to your BIGGEST QUESTIONS (Exploring...EVERYTHING)