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| Aflevering | Eerste uitzending |
|---|---|
| S04E01 - The Wild West | 02/08/2021 |
| S04E02 - The Battle for the Black Swan | 02/08/2021 |
| S04E03 - Arctic War | 02/08/2021 |
| S04E04 - Hollywood | 09/08/2021 |
| S04E05 - The First Americans | 09/08/2021 |
| S04E06 - Venice's Lost Empire | 09/08/2021 |
| S04E07 - The Mississippi River | 16/08/2021 |
| S04E08 - Hurricane Apocalypse | 16/08/2021 |
| S04E09 - The Great Barrier Reef | 23/08/2021 |
| S04E10 - Sea of Secrets | 23/08/2021 |