Piuro's little "Pompeii", the most spoken language in the world

Piuro, a small town that was buried by a massive landslide exactly four centuries ago and disappeared completely. It is located in Valchiavenna, in the province of Sondrio. Excavations have only begun in recent decades, and like a miniature Pompeii, a vanished world has resurfaced. Archaeologists have found the remains of a community frozen in place at the moment of the disaster. Work continues, and Paolo Magliocco and Giulia De Francovich went to see what they're uncovering. The world's first factory for handcrafted furniture, each unique and custom-made, but automatically Italian. Giovanni Carrada and Daniela Franco went to see how it works. What happened to the Station Master, that official in the red-hatted uniform who started the trains with a green paddle? He's still there, but he starts them with electronic commands. The Superquark reporters explore the safety systems of the Italian railway network, particularly the high-speed trains.