| 1 | — |  | Curious Cases | BBC Radio 4 | |
| 1 | — |  | Radiolab | WNYC Studios | |
| 3 | — | F | Futureproof with Jonathan McCrea | Newstalk | |
| 3 | 12 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 3 | 4 |  | Science Weekly | The Guardian | |
| 4 | 6 |  | A Question of Science | The Francis Crick Institute | |
| 4 | — |  | StarTalk Radio | Neil deGrasse Tyson | |
| 5 | 1 | S | Show Me the Science with Luke O'Neill | Newstalk | |
| 5 | 1 |  | Shocked | UChicago Institute for Climate and Sustainable Growth, Michael Greenstone, Amy Harder | |
| 6 | 5 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 6 | 1 |  | Ologies with Alie Ward | Alie Ward | |
| 8 | 5 | M | Mooney Goes Wild | RTÉ Radio 1 | |
| 9 | 6 | C | CountryWide | RTÉ Radio 1 | |
| 10 | 3 | B | Boring History for Sleep | Velvet | |
| 10 | 2 |  | BBC Inside Science | BBC Radio 4 | |
| 11 | 10 | T | The Knepp Wilding Podcast | Knepp.co.uk | |
| 11 | 5 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 12 | 4 |  | The Michael Shermer Show | Michael Shermer | |
| 13 | 8 |  | Making Sense with Sam Harris | Sam Harris | |
| 13 | — |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 15 | 6 |  | CrowdScience | BBC World Service | |
| 16 | 12 |  | More or Less | BBC Radio 4 | |
| 17 | 7 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 18 | 28 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 18 | 4 |  | This Week in Virology | Vincent Racaniello | |
| 19 | 3 | I | In Your Nature | By BirdWatch Ireland | |
| 19 | 9 |  | Real Ghost Stories Online | Real Ghost Stories Online | Paranormal, Supernatural & Horror Radio | |
| 19 | — |  | Overshoot: Navigating a world beyond 1.5°C | Planet B Productions | |
| 20 | 14 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 21 | 32 |  | Nature Podcast | Springer Nature Limited | |
| 23 | 16 |  | The Life Scientific | BBC Radio 4 | |
| 24 | 64 |  | That UFO Podcast | That UFO Podcast | |
| 24 | 5 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 25 | 4 |  | Where The Wild Thoughts Are | Jo Marchant | |
| 27 | — |  | Lingthusiasm - A podcast that's enthusiastic about linguistics | Gretchen McCulloch and Lauren Gawne | |
| 27 | 30 | P | Pharmacy Microteaches | Dave Abbott | |
| 28 | 5 |  | Robinson's Podcast | Robinson Erhardt | |
| 29 | 2 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 29 | 3 | W | Wild Tales | Nature Podcast | National Trust | |
| 31 | 7 |  | ExtinctZoo | ExtinctZoo | |
| 31 | 14 |  | The Psychology Podcast | iHeartPodcasts | |
| 32 | 3 |  | The Quanta Podcast | Quanta Magazine | |
| 32 | 70 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 32 | — | F | Four Eyes | Modern Optometry | |
| 33 | 8 |  | The Science Show | ABC | |
| 33 | 3 |  | Science Magazine Podcast | Science Magazine | |
| 34 | 3 | M | Making Science with Tom Whipple | The Times | |
| 35 | 144 | T | Tom MacSweeney's Seascapes | Tom MacSweeney | |
| 35 | 7 |  | Overheard at National Geographic | National Geographic | |
| 36 | 24 | T | The Aspiring Psychologist Podcast | Dr Marianne Trent | |
| 36 | 96 |  | Breaking Down: Collapse | Kory & Kellan | |
| 37 | — | T | The Climate Ambassador Podcast | The Climate Ambassador Podcast | |
| 37 | 16 |  | Babbage from The Economist | The Economist | |
| 37 | — |  | Sidenote by AsapSCIENCE | AsapSCIENCE | |
| 38 | — |  | Your Brain On | Drs. Ayesha and Dean Sherzai | |
| 38 | 5 | V | Veterinary Vertex | AVMA Journals | |
| 39 | 4 |  | Speaking of Psychology | American Psychological Association | |
| 39 | 15 |  | Unexplainable | Vox | |
| 40 | — |  | Kindred | Kate Coffin | |
| 40 | 46 |  | Instant Genius | Our Media | |
| 40 | 5 |  | Naturebang | BBC Radio 4 | |
| 41 | — | T | The BVOA Podcast | bvoa | |
| 43 | 28 |  | Discovery | BBC World Service | |
| 43 | 17 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 43 | 16 |  | Physics World Weekly Podcast | Physics World | |
| 44 | — | L | Leaving Cert Biology Revision | Mr G. O'Donovan | |
| 44 | 5 |  | This Week in Virology | Vincent Racaniello | |
| 45 | — | I | Irish Wildlife Trust | Irish Wildlife Trust | |
| 46 | — |  | Professor Brian Cox Live Q and A Podcast | The Cosmic Shambles Network | |
| 46 | 6 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 48 | — | I | Into The Paranormal, Podcast With Tony Brueski | Real Story Media | |
| 49 | — | E | Energized: The Future of Energy | GZERO Media | |
| 49 | 10 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 50 | 32 |  | A Life More Wild | Canopy & Stars | |
| 50 | — |  | The Grave Talks | Haunted, Paranormal & Supernatural | Ghost Stores, Haunted, Paranormal & Supernatural Stories | |
| 51 | 11 | B | Bird Songs with Seán Ronayne | RTÉ lyric fm | |
| 51 | — |  | Strength and Conditioning Journal Podcast | Ben Reuter, SCJ Podcast Editor | |
| 52 | — | P | Pharmaverse Podcast | Michael Pietrack | |
| 53 | 2 | Е | Емоційний інтелект | Суспільне мовлення | |
| 54 | — | C | Chris Skinner's Countryside Podcast | SOUNDYARD | |
| 55 | 12 |  | Science Friday | Science Friday and WNYC Studios | |
| 56 | 33 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 56 | — | H | Hannah and Erik Go Birding | Hannah Buschert and Erik Ostrander | |
| 57 | 28 |  | Science Vs | Spotify Studios | |
| 58 | 27 |  | Science In Action | BBC World Service | |
| 59 | 12 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 59 | 27 | N | Naturefile | RTÉ lyric fm | |
| 60 | 16 |  | Speed & Scale | TED | |
| 61 | 16 |  | The Plodcast | Our Media | |
| 62 | 22 | W | What The Duck?! | ABC | |
| 63 | 22 |  | Astrum Space | Astrum | |
| 63 | 15 |  | All In The Mind | ABC | |
| 65 | 28 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 67 | 32 |  | Kohn's Zone | Alfie Kohn | |
| 68 | 29 | T | The HPS Podcast - Conversations from History, Philosophy and Social Studies of Science | HPSUniMelb.org | |
| 68 | 43 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 69 | 25 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 69 | 36 |  | Mysterious Universe | 8th Kind | |
| 70 | 9 |  | Scotland Outdoors | BBC Radio Scotland | |
| 71 | 29 |  | My Big TOE by Thomas Campbell - Unifying Mind and Matter | Thomas Campbell together with the MBT Volunteers | |
