Abraham Lincoln. Adolf Hitler. The birth of Christ. The death of Joan of Arc. We know that these seminal people and events helped shape our history, and we know their stories well...or do we? Much of our information about the last 2,000 years is based on unreliable sources, old technology, and antiquated theories. Not anymore. Take a journey around the world as modern historians, scientists and scholars investigate ancient artifacts, documents and locales to answer age-old questions about our puzzling past.