9 Unsolved Ancient Mysteries That Perplex Historians To This Day
Yves GELLIE/Gamma-Rapho via Getty ImagesA scene from the film Rapa-Nui, a reconstruction of the history of Easter Island. Each year, new scientific research and archaeological discoveries help us gain a deeper understanding of human history. Experts have discovered civilizations once lost, unheard-of religions, and strange creatures that once roamed the planet.