| 1 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 2 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 3 | — |  | Radiolab | WNYC Studios | |
| 4 | 16 |  | Making Sense with Sam Harris | Sam Harris | |
| 5 | 2 |  | Ologies with Alie Ward | Alie Ward | |
| 6 | 19 |  | Overheard at National Geographic | National Geographic | |
| 7 | 79 |  | The world, the universe and us | New Scientist | |
| 8 | 3 | S | Show Me the Science with Luke O'Neill | Newstalk | |
| 9 | 2 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 10 | 3 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 11 | 5 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 12 | 8 |  | Science Weekly | The Guardian | |
| 13 | 100 |  | The Life Scientific | BBC Radio 4 | |
| 14 | 7 |  | Ancient Aliens | PodcastOne | |
| 15 | — | T | The Perception & Action Podcast | Rob Gray | |
| 16 | 10 |  | The Psychology Podcast | iHeartPodcasts | |
| 17 | 47 |  | That UFO Podcast | That UFO Podcast | |
| 18 | 174 |  | SciShow Tangents | Complexly | |
| 19 | 10 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 20 | 11 |  | BBC Inside Science | BBC Radio 4 | |
| 21 | 9 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 22 | 8 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 23 | 13 |  | Curious Cases | BBC Radio 4 | |
| 24 | 9 |  | More or Less | BBC Radio 4 | |
| 25 | 50 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 26 | 8 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 27 | 89 |  | Accidental Gods | Accidental Gods | |
| 28 | 127 |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 29 | 10 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 30 | — |  | The Quanta Podcast | Quanta Magazine | |
| 31 | 157 |  | The Casual Birder Podcast | Suzy Buttress | |
| 32 | — | I | Intertek's Assurance in Action Podcast Network | Intertek | |
| 33 | 16 |  | Rare Earth | BBC Radio 4 | |
| 34 | — | L | Leaving Cert Biology Revision | Mr G. O'Donovan | |
| 35 | — | T | The Science of Psychotherapy | Dahlitz Media | |
| 36 | — | T | The Utility Vegetation Management Podcast | Steve Cieslewicz and Nick Ferguson | |
| 37 | — | I | I.A. Café - Enquête au cœur de la recherche sur l’intelligence artificielle | Jean-François Sénéchal, Frédérick Plamondon, David Beauchemin, Ève Gaumond, Sylvain Munger, Shirley Plumerand, Véronique Tremblay et Stéphane Mineo. | |
| 38 | 16 | T | TheSoleSisters Podcast | TheSoleSisters | |
| 39 | 31 | M | Mooney Goes Wild | RTÉ Radio 1 | |
| 40 | 17 |  | Naturebang | BBC Radio 4 | |
| 41 | 17 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 42 | 16 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 43 | 17 | P | PsychCrunch | The British Psychological Society Research Digest | |
| 44 | 17 | U | Under the Cortex | psychologicalscience | |
| 45 | 15 | P | Prison Breakdown | Professors Eric Bronson & Beck Strah | |
| 46 | 38 | C | CountryWide | RTÉ Radio 1 | |
| 47 | 16 |  | Bite Back with Abbey Sharp | Abbey Sharp / Frequency Podcast Network | |
| 48 | 3 |  | Science In Action | BBC World Service | |
| 49 | 12 |  | The Astrophysics Podcast | Paul Duffell | |
| 50 | 22 | F | Futureproof with Jonathan McCrea | Newstalk | |
| 51 | 19 |  | Jung Chicago Radio | C. G. Jung Institute of Chicago | |
| 52 | 16 |  | Regenerative Agriculture Podcast | John Kempf | |
| 53 | 20 | R | Ri Science Podcast | The Royal Institution | |
| 54 | 20 |  | The Archaeology Show | Archaeology Podcast Network | |
| 55 | 20 |  | How We're Wired | The Bertarelli Foundation | |
| 56 | 33 | T | The Pasture Pod | Michael Blanche | |
| 57 | 19 |  | So Cultured Podcast | Liv Grant & Taz Shipley | |
| 58 | 19 |  | Cited Podcast | Cited Media | |
| 59 | 19 | C | CHEST Journal Podcasts | American College of Chest Physicians | |
| 60 | 19 | W | Wissenschaftsmagazin | Schweizer Radio und Fernsehen (SRF) | |
| 61 | 19 |  | We're not getting any younger... yet. | The Buck Institute | |
| 62 | 19 |  | Discovery | BBC World Service | |
| 63 | 11 |  | Unexpected Elements | BBC World Service | |
| 64 | 16 |  | Earthfiles Podcast with Linda Moulton Howe | Linda Moulton Howe | |
| 65 | 23 |  | CrowdScience | BBC World Service | |
| 66 | 22 |  | Science Magazine Podcast | Science Magazine | |
| 67 | 11 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 68 | 19 |  | Speed & Scale | TED | |
| 69 | 16 | ![Cosmosis [Formerly The UFO Rabbit Hole]](https://is1-ssl.mzstatic.com/image/thumb/Podcasts211/v4/6e/50/4f/6e504f3a-5967-0f9a-1858-77a5f070b7d4/mza_10360255510263335732.jpeg/100x100bb.jpg) | Cosmosis [Formerly The UFO Rabbit Hole] | Kelly Chase & Jay Christopher King | |
| 70 | 24 | B | Bird Songs with Seán Ronayne | RTÉ lyric fm | |
| 71 | 23 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 72 | 21 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 73 | 18 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 74 | 20 |  | Physics World Weekly Podcast | Physics World | |
| 75 | 6 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 76 | 17 |  | Professor Brian Cox Live Q and A Podcast | The Cosmic Shambles Network | |
| 77 | 1 |  | Science Vs | Spotify Studios | |
| 78 | 10 | W | Women on Walls at RCSI | Accenture | |
| 79 | 29 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 80 | 1 |  | Mysterious Universe | 8th Kind | |
| 81 | 21 |  | Forever Chemicals | Black-Footed Ferret Productions, LLC | |
| 82 | 15 |  | The Origins Podcast with Lawrence Krauss | Lawrence M. Krauss | |
| 83 | 22 |  | The New Quantum Era - innovation in quantum computing, science and technology | Sebastian Hassinger | |
| 84 | 2 |  | The Climate Question | BBC World Service | |
| 85 | 23 |  | Opinionated History of Mathematics | Intellectual Mathematics | |
| 86 | 23 | W | White Coat, Black Art | CBC | |
| 87 | 21 |  | The Jim Rutt Show | The Jim Rutt Show | |
| 88 | 21 |  | The LIUniverse with Dr. Charles Liu | theliuniverse | |
| 89 | 20 | O | On the horizon with Glenn and Henry | Glenn Kirby | |
| 90 | 20 | P | Physics World Stories Podcast | Physics World | |
| 91 | 20 | D | Data Science Decoded | Mike E | |
| 92 | 20 | W | Women in Wildlife | Eliza Stott | |
| 93 | 20 | T | The Gulf Stream Podcast | The Gulf Stream Podcast | |
| 94 | 29 | F | Farming Today | BBC Radio 4 | |
| 95 | 17 |  | Eons: Surviving Deep Time | PBS | |
| 96 | 27 |  | All In The Mind | ABC | |
| 97 | 12 |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 98 | 24 |  | Unexplainable | Vox | |
| 99 | 52 |  | Universe Today Podcast | Fraser Cain | |
| 100 | 23 |  | Short Wave | NPR | |
