Season 1 (2006)
9.63 avg 4 episodes 9.3 → 9.6
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Biodiversity: All Alive, All Connected | 9.3 | 17 |
| 2 | Fresh Water: The Blue Gold | 9.6 | 10 |
| 3 | Sea and Oceans: Deep Blue | 10.0 | 8 |
| 4 | Earth and Its Resources: Save the Earth | 9.6 | 10 |
Cast
Seasons
Season 2 (2007)
9.73 avg 4 episodes 9.7 → 9.9
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Six Billion Men to Feed | 9.7 | 9 |
| 2 | Men and Animals | 9.6 | 9 |
| 3 | The Great Rivers | 9.7 | 9 |
| 4 | The Forest | 9.9 | 9 |
Season 3 (2009)
9.93 avg 4 episodes 10.0 → 9.7
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Japan: Consumption, Our Imprint on the Environment | 10.0 | 9 |
| 2 | The End of Oil | 10.0 | 8 |
| 3 | Gabon: Plan B | 10.0 | 8 |
| 4 | Climate Disorder: Special - "One Night for the Earth" | 9.7 | 8 |
Season 4 (2010)
9.85 avg 4 episodes 10.0 → 9.4
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Heroes of Nature: Bangladesh | 10.0 | 8 |
| 2 | The Hand of Man: Canada | 10.0 | 8 |
| 3 | The Natural Reserves: Senegal | 10.0 | 8 |
| 4 | Heroes of Nature: Volcanoes | 9.4 | 11 |
