Season 6
Episodes
1 The Enigmas of Civilizations Apr 22, 2006 
2 The Fight Against Gravity Apr 29, 2006 
3 The Andes - Secrets and Treasures May 6, 2006 4 Darwin - A 4-Million-Year Journey May 13, 2006 
5 The Sinking of the Andrea Doria May 27, 2006 6 Africa - The Last Tribes Sep 23, 2006 7 Middle Ages - Myths, Truths, and Secrets Sep 30, 2006 8 Man and the Sea Oct 7, 2006
2 The Fight Against Gravity Apr 29, 2006 3 The Andes - Secrets and Treasures May 6, 2006 4 Darwin - A 4-Million-Year Journey May 13, 2006 5 The Sinking of the Andrea Doria May 27, 2006 6 Africa - The Last Tribes Sep 23, 2006 7 Middle Ages - Myths, Truths, and Secrets Sep 30, 2006 8 Man and the Sea Oct 7, 2006