| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S02E01 | Asteroid, Island of Stability, Obesity |
October 3, 2006
PBS
|
60 | |
| S02E02 | 1918 Flu, Mass Extinction, Papyrus |
November 21, 2006
PBS
|
60 | |
| S02E03 | Aging, Space Elevator, Maya |
January 9, 2007
PBS
|
60 | |
| S02E04 | Sleep, CERN, Emergence |
July 10, 2007
PBS
|
60 | |
| S02E05 |
T. Rex Blood?, Epigenetics, Kryptos
season finale
|
July 24, 2007
PBS
|
60 |
No artwork of this type.
No artwork of this type.