Episode 10From the sources to the Black Sea Delta: Michelangelo Pepe travels along the Danube, discovering the river that has accompanied European history. Traveling along it means traveling through time, among castles, fortresses, Roman camps, but also ports and modern factories. The crocodile, which survived the prehistoric era, has always inspired fear. We will see how these fearsome reptiles hunt their prey on the banks of African rivers. In the documentary by Sylvie Bergerot and Eric Robert. A small American city, Framingham, is an open-air laboratory: here for 56 years studies on cardiovascular diseases have been carried out. Lorenzo Pinna visited this unusual place of research and experimentation, meeting the inhabitants of the city who have undergone medical tests. It is the most important document of Norman civilization: known as the Bayeux Tapestry, it is an embroidery, made with colored wool threads, on a 70-meter long linen canvas.