Sanjay Gupta, Anderson Cooper, Jeff Corwin and Lisa Ling investigate the current state of our planet, focusing on four major areas: global warming, overpopulation, deforestation and species loss.
| Season | From | To | Episodes |
|---|---|---|---|
| All Seasons | |||
| Specials | 0 | ||
| Season 1 | October 2007 | October 2007 | 2 |
| Unassigned Episodes | 0 |
| Season | From | To | Episodes |
|---|---|---|---|
| Unassigned Episodes | 2 |
| Season | From | To | Episodes |
|---|---|---|---|
| Season 1 | 0 | ||
| Unassigned Episodes | 2 |
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