| 1 | — |  | StarTalk Radio | Neil deGrasse Tyson | |
| 2 | 2 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 3 | 2 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 4 | 1 |  | Science Weekly | The Guardian | |
| 5 | 2 | F | Futureproof with Jonathan McCrea | Newstalk | |
| 6 | — |  | More or Less | BBC Radio 4 | |
| 7 | 20 |  | BBC Inside Science | BBC Radio 4 | |
| 8 | 6 | S | Show Me the Science with Luke O'Neill | Newstalk | |
| 9 | — |  | Radiolab | WNYC Studios | |
| 10 | 2 | B | Bird Songs with Seán Ronayne | RTÉ lyric fm | |
| 11 | 1 | T | The Artificial Human | BBC Radio 4 | |
| 12 | — |  | Curious Cases | BBC Radio 4 | |
| 13 | 2 | M | Mooney Goes Wild | RTÉ Radio 1 | |
| 14 | 1 |  | Ologies with Alie Ward | Alie Ward | |
| 15 | — | F | Feet on the Soil | Soil Boy | |
| 16 | — | R | RSPB Bird Notes | Jane Markham | |
| 17 | 6 |  | Robinson's Podcast | Robinson Erhardt | |
| 18 | 6 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 19 | 5 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 20 | 9 |  | Why Do We Do That? | BBC Radio 4 | |
| 21 | — | T | The Great Cholesterol Deception--The Story Behind | chiki&bella | |
| 22 | 38 |  | Discovery | BBC World Service | |
| 23 | 17 | I | Irish Wildlife Trust | Irish Wildlife Trust | |
| 24 | 33 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 25 | 9 |  | Making Sense with Sam Harris | Sam Harris | |
| 26 | 33 |  | Unexplainable | Vox | |
| 27 | 12 |  | Science In Action | BBC World Service | |
| 28 | 11 |  | UAP Unidentified Alien Podcast | Gamut Podcast Network | |
| 29 | 67 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 30 | 11 |  | Mysterious Radio: Paranormal, UFO and Lore Interviews | Podcast Audio House | |
| 31 | 10 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 32 | 14 |  | The world, the universe and us | New Scientist | |
| 33 | 76 |  | Jung Chicago Radio | C. G. Jung Institute of Chicago | |
| 34 | 14 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 35 | — |  | The Psychology Podcast | iHeartPodcasts | |
| 36 | — | C | Changing Minds with Owen Fitzpatrick | Owen Fitzpatrick | |
| 37 | — |  | Clearer Thinking with Spencer Greenberg | Spencer Greenberg | |
| 38 | 144 |  | Regenerative Agriculture Podcast | John Kempf | |
| 39 | — |  | Invisibilia | NPR | |
| 40 | — |  | The Medbullets Step 2 & 3 Podcast | Medbullets | |
| 41 | — | N | New Scientist Weekly | New Scientist | |
| 42 | — | T | The Abnormal Psychologist | Dr. Colby Taylor | |
| 43 | — |  | Les Dessous de la Cosmétique | Julie Magand Castel | |
| 44 | — |  | Astrum Space | Astrum | |
| 45 | — |  | Professor Brian Cox Live Q and A Podcast | The Cosmic Shambles Network | |
| 46 | — | N | New Scientist CultureLab | New Scientist | |
| 47 | — |  | Chemistry Made Simple | Matthew Macariou | |
| 48 | — | A | Arxiv Papers | Igor Melnyk | |
| 49 | — | T | The Aspiring Psychologist Podcast | Dr Marianne Trent | |
| 50 | — |  | Joint Approach | Musculoskeletal Infection Society/European Bone and Joint Infection Society | |
| 51 | — | T | The Dairy Trail | Agriland Media | |
| 52 | 22 |  | That UFO Podcast | That UFO Podcast | |
| 53 | 18 |  | The Climate Question | BBC World Service | |
| 54 | 11 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 55 | 18 | C | CountryWide | RTÉ Radio 1 | |
| 56 | 30 | M | My Favorite Theorem | Kevin Knudson & Evelyn Lamb | |
| 57 | 35 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 58 | 33 | W | Why? with Emma Kennedy | Podmasters | |
| 59 | 16 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 60 | 22 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 61 | 33 |  | CrowdScience | BBC World Service | |
| 62 | 18 |  | Paranormal Portal | Brent Thomas | |
| 63 | 30 |  | Your Brain On | Drs. Ayesha and Dean Sherzai | |
| 64 | 32 |  | Science Magazine Podcast | Science Magazine | |
| 65 | 31 |  | Science Talk | Scientific American | |
| 66 | 12 |  | The Life Scientific | BBC Radio 4 | |
| 67 | 31 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 68 | 29 | T | The Structural Engineering Podcast | Zach and Max | |
| 69 | 20 | P | Pete the Vet's Podcast | Pete Wedderburn | |
| 70 | 22 |  | BrainStuff | iHeartPodcasts | |
| 71 | 34 |  | Origin Stories | The Leakey Foundation | |
| 72 | 19 | C | Climate Change on Trial | Unreported Story Society | |
| 73 | 32 | F | Farm Small Farm Smart Daily | The Modern Grower Podcast Network | |
| 74 | 32 | P | PRS Journal Club | Plastic and Reconstructive Surgery | |
| 75 | 30 | M | Modern Physics: General Theory of Relativity (Fall 2012) | Stanford Continuing Studies | |
| 76 | 30 |  | The Future of Everything | Stanford Engineering | |
| 77 | 30 |  | Immune | Vincent Racaniello | |
| 78 | 28 | C | Converging Dialogues | Converging Dialogues | |
| 79 | 28 | T | The Immaculate Deception | Somethin' Else / Sony Music Entertainment | |
| 80 | 28 | P | Philosophy | Cambridge University | |
| 81 | 27 | S | Supersymmetry, Grand Unification, and String Theory | Stanford Continuing Studies Program | |
| 82 | 27 | S | Sustainability Further | Banish | |
| 83 | 27 | C | Cruce de cables | Radio Nacional | |
| 84 | 53 |  | Science Friday | Science Friday and WNYC Studios | |
| 85 | 2 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 86 | 28 |  | Robert Sapolsky | Father-Offspring Interviews | Robert Sapolsky | |
| 87 | 23 |  | Unexpected Elements | BBC World Service | |
| 88 | 22 | F | Farming for Nature | Farming for Nature | |
| 89 | 28 |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 90 | 14 |  | Instant Genius | Our Media | |
| 91 | 31 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 92 | 20 |  | Overheard at National Geographic | National Geographic | |
| 93 | 13 |  | Let's Learn Everything! | Maximum Fun | |
| 94 | 26 | N | Naturefile | RTÉ lyric fm | |
| 95 | 25 |  | Total Disclosure Podcast | Tyler Roberts | |
| 96 | 29 |  | All In The Mind | ABC | |
| 97 | 23 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 98 | 24 |  | Mysterious Universe | 8th Kind | |
| 99 | 30 |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 100 | 10 |  | Science Fictions | Tom Chivers and Stuart Ritchie | |
