10 Episodes

Season 4

Episodes

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  • 10 episodes
    10 episodes
    • s4e10Polar Peril
      April 29, 2016
    • s4e9The Reshaping of Laos
      April 22, 2016
    • s4e8Iceberg Alley
      April 15, 2016
    • s4e7The Unstoppable Force of Bangladesh
      April 8, 2016
    • s4e6Melting Siberia
      April 1, 2016
    • s4e5Cabo Verde Volcano
      May 15, 2015
    • s4e4River of Doubt
      May 8, 2015
    • s4e3Rising Oceans
      May 1, 2015
    • s4e2Vanuatu
      April 24, 2015
    • s4e1Burning Australia
      April 17, 2015