| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S09E01 | Trees |
November 13, 2023
RTÉ One
|
30 | |
| S09E02 | Ageing Well |
November 20, 2023
RTÉ One
|
30 | |
| S09E03 | Where You Live |
November 27, 2023
RTÉ One
|
30 | |
| S09E04 | Fungi |
December 4, 2023
RTÉ One
|
30 | |
| S09E05 | Oceans and Climate |
December 11, 2023
RTÉ One
|
30 | |
| S09E06 |
The Immune System
season finale
|
December 18, 2023
RTÉ One
|
30 |
No artwork of this type.
No artwork of this type.
No artwork of this type.