Story : The first episode opens with a fascinating documentary on Ethiopia from the French series Ushuaia. Ethiopia, a surprising country for the complexity of its aspects; with a changing, arid territory and large salt lagoons; with the Omo Valley populated by men and women, whose origins seem to date back to the dawn of time, inhabited by a fauna unique in the world. Ethiopia, the country of origins. In the reportage by Alberto Angela and Michelangelo Pepe, we will discover the most important gold mine of the Roman Empire, Las Medulas in Spain, declared a World Heritage Site by UNESCO. 100 years after its construction, the Panama Canal, one of the greatest engineering works that connects the Pacific Ocean to the Atlantic, will be doubled. By taking the Panama shortcut, in fact, ships save the 15-20 days needed to circumnavigate all of South America. And over 95% of global freight traffic takes place by sea.