Time, time, time ... see how it shaped an entire culture! Science scholars discover the mysteries of the Mayan and Incan cultures during the fifth video in a History of Science series. The narrator shows how these time keepers developed...

How did ancient civilizations in America develop their culture and knowledge base without any contact with the peoples of Africa, Asia, or Europe? This is a story about the planet Venus, breathtaking pyramids, and intricate calendars....