S2, E2: Mexico City is one of the most densely populated places on earth. Its twenty million inhabitants are constantly living with the threat of Popocatple, an active volcano that can destroy the city at any time.


S2, E2: Mexico City is one of the most densely populated places on earth. Its twenty million inhabitants are constantly living with the threat of Popocatple, an active volcano that can destroy the city at any time.