(1) In this episode of the ArchaeoDuck series, Chloe Duckworth takes us to the National Museum of Denmark, where C. J. Thomsen in the 19th century began dividing prehistory into the Stone, Bronze and Iron ages. (2) The Medieval castle of Caveirac in France today is part of the City Hall, so it is not individually discernible. However, historical research, including 3D modeling, has enabled a better understanding and a virtual reconstruction of many of the stages of the castle throughout its history. Strata Portraits of Humanity is a monthly half-hour newsmagazine-style show designed for the cable TV and Internet platforms. Each episode of the human story is a portrait building on the many layers of the human experience. This is a record we are just beginning to uncover. From that perspective, Strata delivers in-depth coverage of a wide variety of archaeological and cultural heritage topics all around the world.