Season 18
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| # | Image | Title | Aired |
|---|---|---|---|
| 1 |  | Meet The Avatars | Aug 15, 2017 |
| 2 |  | Can Seaweed Save the World? | Aug 22, 2017 |
| 3 |  | Closing in the Hunt for Alien Life | Aug 29, 2017 |
| 4 |  | Secrets of the Dinosaur Crater | Sep 5, 2017 |
| 5 |  | Heartbeat: The Miracle Inside You | Sep 12, 2017 |
| 6 |  | Death Dive: Into The Rings Of Saturn | Sep 19, 2017 |
| 7 |  | Sit Back, Relax; The Dawn Of The Driverless Car | Sep 26, 2017 |
| 8 |  | Can we Save the Reef? | Oct 3, 2017 |
| 9 |  | How To Exercise Better | Oct 10, 2017 |
| 10 |  | Gut Revolution (Part 1) Melissa's Story | Oct 17, 2017 |
| 11 |  | Gut Revolution (Part 2) Garry's Story | Oct 24, 2017 |
| 12 |  | It’s A Twin Thing | Oct 31, 2017 |
| 13 |  | The Secret To Making Better Decisions | Jan 30, 2018 |
| 14 |  | Farmer Needs a Robot | Feb 6, 2018 |
| 15 |  | Back To The Moon | Feb 13, 2018 |
| 16 |  | Gut Revolution (Part 3) Victoria's Story | Feb 20, 2018 |
| 17 |  | Sleep Matters | Feb 27, 2018 |