| 1 | — |  | Curious Cases | BBC Radio 4 | |
| 2 | 2 |  | Making Sense with Sam Harris | Sam Harris | |
| 3 | 4 |  | Ologies with Alie Ward | Alie Ward | |
| 4 | 25 |  | The world, the universe and us | New Scientist | |
| 5 | 3 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 6 | 3 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 7 | 2 | S | Show Me the Science with Luke O'Neill | Newstalk | |
| 8 | 1 |  | More or Less | BBC Radio 4 | |
| 9 | 3 | F | Futureproof with Jonathan McCrea | Newstalk | |
| 10 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 11 | — |  | Science Weekly | The Guardian | |
| 12 | 6 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 13 | 5 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 14 | 2 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 15 | 1 |  | Radiolab | WNYC Studios | |
| 16 | — |  | The Peter Byck Show | Peter Byck | |
| 17 | 4 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 18 | 20 |  | Terrible Lizards | Iszi Lawrence and David Hone | |
| 19 | 28 |  | Unexplainable | Vox | |
| 20 | 37 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 21 | 6 | T | Talks On Psychoanalysis | International Psychoanalytical Association | |
| 22 | 6 |  | Science Vs | Spotify Studios | |
| 23 | 6 | F | Farming for Nature | Farming for Nature | |
| 24 | 73 |  | All In The Mind | ABC | |
| 25 | 6 | T | The Vet Pod | The Vet Pod | |
| 26 | 6 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 27 | 89 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 28 | 85 | P | PharmaSource Podcast | Life Science Networks | |
| 29 | 5 | M | Mooney Goes Wild | RTÉ Radio 1 | |
| 30 | 106 |  | The Michael Shermer Show | Michael Shermer | |
| 31 | 117 |  | Freakonomics, M.D. | Freakonomics Radio + Stitcher | |
| 32 | 161 |  | Accidental Gods | Accidental Gods | |
| 33 | 11 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 34 | 133 |  | CrowdScience | BBC World Service | |
| 35 | 14 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 36 | 127 |  | MinuteEarth | Minute Earth | |
| 37 | 129 | T | The Offshore Wind Podcast from GWEC | Global Wind Energy Council | |
| 38 | — |  | Robert Sapolsky | Father-Offspring Interviews | Robert Sapolsky | |
| 39 | — |  | The Episodic Table of Elements | T. R. Appleton | |
| 40 | — | S | Sideways Sociology: UK Anti-Racism | The Sociological Review Foundation | |
| 41 | — | E | Economics In Ten | Economics In Ten | |
| 42 | — | P | Podcast de Juan Ramón Rallo | Juan Ramón Rallo | |
| 43 | — | U | Un hublot sur l'Océan - Fondation Tara Océan | Fondation Tara Océan | |
| 44 | — | R | Richard Wiseman's On Your Mind | Podimo & TellTale | |
| 45 | 22 | L | Leaving Cert Biology Revision | Mr G. O'Donovan | |
| 46 | — |  | The Nature Of with Willow Defebaugh | Atmos | |
| 47 | — | C | CRISPR News | crispr news | |
| 48 | — | C | Center for Advanced Studies (CAS) Research Focus CRISPR/Cas | Center for Advanced Studies (CAS) | |
| 49 | — | G | GuidePost, A Podcast Series from The CRISPR Journal | The CRISPR Journal | |
| 50 | 25 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 51 | 25 | E | Everything's Psychology | Paul Davies | |
| 52 | 24 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 53 | 26 |  | Into the Impossible With Brian Keating | Big Bang Productions Inc. | |
| 54 | 19 |  | A Life More Wild | Canopy & Stars | |
| 55 | 24 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 56 | 24 |  | Alive Again | iHeartPodcasts | |
| 57 | 24 |  | Evolutionary Psychology (the podcast) | Dave Pietraszewski & David Pinsof | |
| 58 | 28 |  | Physics World Weekly Podcast | Physics World | |
| 59 | 22 |  | Science Friday | Science Friday and WNYC Studios | |
| 60 | 26 |  | The Science of Everything Podcast | James Fodor | |
| 61 | 25 | P | Psychotherapy and Applied Psychology | Dr. Daniel W Cox | |
| 62 | 23 |  | Quirks and Quarks | CBC | |
| 63 | 21 | T | The Pasture Pod | Michael Blanche | |
| 64 | 23 | S | Sociology Ruins Everything | Matt Sedlar | |
| 65 | 25 | P | Physics World Stories Podcast | Physics World | |
| 66 | 23 | Q | Quantum Entanglement and Faster Than Light Communication | Entangled Caesar Salad | |
| 67 | 23 | V | VITA1001 Modern Pharma | Sue and Iris | |
| 68 | 23 | B | Bird Songs with Seán Ronayne | RTÉ lyric fm | |
| 69 | 15 |  | BBC Inside Science | BBC Radio 4 | |
| 70 | 24 |  | The Quanta Podcast | Quanta Magazine | |
| 71 | 21 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 72 | 24 | W | Wild Tales | Nature Podcast | National Trust | |
| 73 | 24 |  | Science Clear+Vivid Podcast | Alan Alda | |
| 74 | 22 |  | That UFO Podcast | That UFO Podcast | |
| 75 | 24 |  | The Hamilton Morris Podcast | Hamilton Morris | |
| 76 | 23 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 77 | 18 |  | Mysterious Universe | 8th Kind | |
| 78 | 65 | W | Why? with Emma Kennedy | Podmasters | |
| 79 | 24 |  | UAP Unidentified Alien Podcast | Gamut Podcast Network | |
| 80 | 24 |  | Naturebang | BBC Radio 4 | |
| 81 | 23 |  | Bigfoot Eyewitness Radio | Vic Cundiff | |
| 82 | 19 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 83 | 18 |  | Rare Earth | BBC Radio 4 | |
| 84 | 23 |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 85 | 17 |  | Infectious Disease Puscast | Vincent Racaniello | |
| 86 | 24 |  | Songs 4 FRCR: Radiology FRCR 2A Revision | FRCR Revision | |
| 87 | 27 |  | Why This Universe? | Dan Hooper, Shalma Wegsman | |
| 88 | 24 | N | New Scientist Weekly | New Scientist | |
| 89 | 22 | A | Always Engaged | Always Engaged | |
| 90 | 24 |  | Psychoanalysis & You | APsA American Psychoanalytic Association | |
| 91 | 22 |  | Kosmographia | Randall Carlson | |
| 92 | 22 | T | The Critter Shed | Collie Ennis & Colette Kinsella for Red Hare Media | |
| 93 | 22 | I | Irish Wildlife Trust | Irish Wildlife Trust | |
| 94 | 22 | C | CountryWide | RTÉ Radio 1 | |
| 95 | 22 |  | Astrum Space | Astrum | |
| 96 | 22 |  | The Life Scientific | BBC Radio 4 | |
| 97 | 17 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 98 | 21 | T | The Different Minds podcast series | John Offord | |
| 99 | 24 | E | Ecolution | RTÉ Kids | |
| 100 | 21 |  | Universe Today Podcast | Fraser Cain | |
