Moving a Mountain

In the season finale, Michael C. Hall concludes his journey to Bangladesh where rising seas are expected to submerge 17% of the nation. After traveling to Christmas Island in episode three, M. Sanjayan returns to further address and question some of the top climate scientists in their fields as they collect key data unlocking the past and future of our planet's changing climate. His destination: Tupungatito, the northernmost historically active stratovolcano in the southern Andes.