| 1 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 2 | — |  | Unexplainable | Vox | |
| 3 | 2 |  | Ologies with Alie Ward | Alie Ward | |
| 4 | 1 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 5 | 1 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 6 | 1 |  | Making Sense with Sam Harris | Sam Harris | |
| 7 | 2 |  | Radiolab | WNYC Studios | |
| 8 | — |  | The Naked Scientists Podcast | The Naked Scientists | |
| 9 | 12 |  | Science Vs | Spotify Studios | |
| 10 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 11 | — |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 12 | 84 | S | Students of Surgery | Martin Brand | |
| 13 | 7 |  | Discovery | BBC World Service | |
| 14 | 9 |  | Science Weekly | The Guardian | |
| 15 | 3 |  | Short Wave | NPR | |
| 16 | 112 |  | Science In Action | BBC World Service | |
| 17 | 1 |  | Curious Cases | BBC Radio 4 | |
| 18 | 32 | T | This Wild Life Conservation Podcast | Amy Turner | |
| 19 | 78 |  | The Michael Shermer Show | Michael Shermer | |
| 20 | 7 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 21 | 5 |  | BBC Inside Science | BBC Radio 4 | |
| 22 | 60 |  | CrowdScience | BBC World Service | |
| 23 | — |  | The Weirdest Thing I Learned This Week | Popular Science | |
| 24 | 66 |  | Speaking of Psychology | American Psychological Association | |
| 25 | 11 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 26 | 2 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 27 | 72 |  | The Psychology Podcast | iHeartPodcasts | |
| 28 | 126 |  | CREOGs Over Coffee | CREOGs Over Coffee | |
| 29 | 12 | L | Let's Talk Micro | Luis Plaza | |
| 30 | 140 | T | The Birding Life Podcast Network | The Birding Life Podcast Network | |
| 31 | — |  | The world, the universe and us | New Scientist | |
| 32 | — |  | Rewilding the World with Ben Goldsmith | Ben Goldsmith | |
| 33 | 112 | S | Stanford Psychology Podcast | Stanford Psychology | |
| 34 | — |  | Scotland Outdoors | BBC Radio Scotland | |
| 35 | — |  | Dr. Chapa’s OBGYN Clinical Pearls | Dr. Chapa’s Clinical Pearls | |
| 36 | 10 |  | Nephilim Death Squad | TopLobsta Productions | |
| 37 | — | J | Journal of the American Academy of Child and Adolescent Psychiatry | American Academy of Child and Adolescent Psychiatry | |
| 38 | — |  | Stanford Psychology Podcast | Stanford Psychology | |
| 39 | 20 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 40 | — |  | The Astrophysics Podcast | Paul Duffell | |
| 41 | — |  | The Parkinson's Podcast | Davis Phinney Foundation | |
| 42 | — | T | The Genetics Podcast | Sano Genetics | |
| 43 | 23 |  | Living Planet | DW | |
| 44 | — |  | Safety Third | Safety Third | |
| 45 | — |  | Chemistry in its element | Chemistry World | |
| 46 | — | T | Talks On Psychoanalysis | International Psychoanalytical Association | |
| 47 | — | G | Guardians of the River | Wild Bird Trust, NGOWP, House of Pod | |
| 48 | — | A | Arthroscopy Podcast | AANA | |
| 49 | — |  | Flash Forward | Rose Eveleth | |
| 50 | — | K | K9 Conservationists | Kayla Fratt | |
| 51 | — | T | Thoracic Surgery Clinics (Elsevier) | Thoracic Surgery Clinics | |
| 52 | 11 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 53 | 11 |  | Overheard at National Geographic | National Geographic | |
| 54 | 54 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 55 | 33 |  | The Social Work Podcast | Jonathan B. Singer, Ph.D., LCSW | |
| 56 | 5 |  | All In The Mind | ABC | |
| 57 | 27 |  | Most Terrifying Places in America | Travel Channel | |
| 58 | 21 | T | The Best of Making Sense with Sam Harris | Sam Harris | |
| 59 | 14 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 60 | 11 |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 61 | 28 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 62 | 23 | B | BJA Education Podcasts | BJA Education | |
| 63 | 3 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 64 | 16 |  | Paranormal Mysteries | Nic Ryan | Paranormal Mysteries Podcast | |
| 65 | 36 |  | Ciência Suja | Ciência Suja | |
| 66 | 107 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 67 | 52 |  | Science Friday | Science Friday and WNYC Studios | |
| 68 | 43 |  | You Are Not So Smart | You Are Not So Smart | |
| 69 | 41 | T | The Cancer Researcher Podcast | The European Association for Cancer Research (EACR) | |
| 70 | 39 |  | The Answer Is Transaction Costs | Michael Munger | |
| 71 | 37 |  | The Plodcast | Our Media | |
| 72 | 37 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 73 | 24 |  | TheThinkingAtheist | The Thinking Atheist | |
| 74 | 38 | C | Conversations in Drug Development | Boyds | |
| 75 | 31 | A | Anatomy On The Go | Seth Jump | |
| 76 | 18 | C | Conversing with Nature | Nature Based Exchange | |
| 77 | 50 | T | The Grazing Game Podcast | Cam Griffin | |
| 78 | 38 |  | So Cultured Podcast | Liv Grant & Taz Shipley | |
| 79 | 38 |  | This Week in Virology | Vincent Racaniello | |
| 80 | 48 |  | Head Shepherd | Mark Ferguson | |
| 81 | 39 | T | The Stem Cell Report with Martin Pera | ISSCR | |
| 82 | 37 |  | Science Quickly | Scientific American | |
| 83 | 21 |  | Blurry Creatures | Blurry Creatures | |
| 84 | 41 | T | The Science Behind That | Atticus.hamilton | |
| 85 | 39 | M | Mathematics Simplified | Anjali Sharma | |
| 86 | 39 |  | Psychedelics Then and Now with Zach Leary | Zach Leary/Psychedelics Today | |
| 87 | 49 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 88 | 37 | G | Goodfellow Unit | Goodfellow Unit | |
| 89 | 37 | T | The Planet Earth Podcast | BBC Radio 4 | |
| 90 | 37 | R | Real Science Exchange-Dairy | Balchem Animal Nutrition & Health | |
| 91 | 37 |  | The Dairy Podcast Show | Wisenetix | |
| 92 | 37 | T | The New Dermatologist | 11-29 Media | |
| 93 | 36 | W | What Lies Beyond Podcast | Matt Colborn | |
| 94 | 35 | T | The Social Brain | Taylor Guthrie and Andrew Cooper Sansone | |
| 95 | 39 | P | Play Therapy Community | Jackie Flynn, EMDRIA Approved Consultant | |
| 96 | 51 |  | Patterns Tell Stories | UFOs & High Strangeness | KLAɄЅ & GΔRRΞTT | |
| 97 | 28 |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 98 | 48 |  | Bigfoot Terror in the Woods Sightings and Encounters | W.J. Sheehan | |
| 99 | 23 |  | Planetary Radio: Space Exploration, Astronomy and Science | The Planetary Society | |
| 100 | 26 |  | The Orthobullets Podcast | Orthobullets | |
