| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S06E06 | How to Kill a Planet |
April 23, 2009
National Geographic
|
60 | |
| S06E11 |
Earth's Evil Twin
season finale
|
June 25, 2009
National Geographic
|
60 |
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No artwork of this type.
No artwork of this type.