| 1 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 2 | — |  | Ologies with Alie Ward | Alie Ward | |
| 3 | — |  | Science Vs | Spotify Studios | |
| 3 | 4 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 4 | 1 |  | Making Sense with Sam Harris | Sam Harris | |
| 4 | 1 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 4 | 5 |  | Radiolab | WNYC Studios | |
| 6 | 3 |  | More or Less | BBC Radio 4 | |
| 6 | 1 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 8 | 5 |  | Unexplainable | Vox | |
| 9 | 2 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 11 | 5 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 11 | 1 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 11 | 8 | E | Easy Physics | Easy Physics | |
| 12 | 6 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 13 | 91 | T | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 14 | 2 |  | Lost Women of Science | Lost Women of Science | |
| 14 | 5 |  | BBC Inside Science | BBC Radio 4 | |
| 15 | 7 | T | The Naked Scientists Podcast | The Naked Scientists | |
| 15 | 1 |  | Alive Again | iHeartPodcasts | |
| 16 | 29 |  | Curious Cases | BBC Radio 4 | |
| 16 | 5 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 16 | 47 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 16 | — |  | Ask the Naked Scientists | Dr Chris Smith | |
| 17 | — |  | Science Weekly | The Guardian | |
| 17 | 1 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 18 | 19 |  | Regenerative Agriculture Podcast | John Kempf | |
| 19 | 4 |  | Blurry Creatures | Blurry Creatures | |
| 20 | 4 |  | The Best of Coast to Coast AM | iHeartPodcasts and Coast to Coast AM | |
| 21 | 8 |  | The Psychology Podcast | iHeartPodcasts | |
| 22 | 2 |  | Babbage from The Economist | The Economist | |
| 22 | 2 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 22 | 65 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 24 | 10 |  | Ancient Aliens | PodcastOne | |
| 25 | 10 | B | Boring History for Sleep | Velvet | |
| 25 | 5 |  | All In The Mind | ABC | |
| 26 | — |  | The Weirdest Thing I Learned This Week | Popular Science | |
| 27 | 5 | S | Students of Surgery | Martin Brand | |
| 28 | 56 |  | Planetary Radio: Space Exploration, Astronomy and Science | The Planetary Society | |
| 28 | 2 |  | Discovery | BBC World Service | |
| 28 | — |  | From First Principles | Krishna Choudhary and Lester Nare | |
| 29 | 24 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 30 | 2 |  | Curiosity Weekly | Discovery | |
| 30 | 48 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 32 | — | I | International Law | Yale Law School | |
| 33 | 4 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 34 | 59 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 34 | 4 |  | Short Wave | NPR | |
| 34 | 41 |  | CrowdScience | BBC World Service | |
| 36 | 14 |  | The Science of Everything Podcast | James Fodor | |
| 36 | — |  | Patterns Tell Stories | UFOs & High Strangeness | KLAɄЅ & GΔRRΞTT | |
| 37 | — |  | That UFO Podcast | That UFO Podcast | |
| 38 | 16 |  | The Orthobullets Podcast | Orthobullets | |
| 39 | 1 |  | The Michael Shermer Show | Michael Shermer | |
| 40 | 3 |  | Space Nuts: Astronomy Insights & Cosmic Discoveries | Professor Fred Watson and Andrew Dunkley | |
| 40 | 7 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 40 | — |  | Clearer Thinking with Spencer Greenberg | Spencer Greenberg | |
| 40 | 15 |  | Science Quickly | Scientific American | |
| 42 | 32 |  | Unexpected Elements | BBC World Service | |
| 42 | 1 |  | This Week in Space (Audio) | TWiT | |
| 43 | — |  | New Books in Medicine | Marshall Poe | |
| 44 | 69 |  | The Science of Birds | Ivan Phillipsen | |
| 46 | 11 |  | Skeptoid | Brian Dunning | |
| 46 | 16 |  | Astrum Space | Astrum | |
| 46 | — | P | Playing Odd | josh@playingodd.com | |
| 46 | — | N | New Books in National Security | Marshall Poe | |
| 47 | 7 |  | Proxy with Yowei Shaw | Y3 Productions | |
| 48 | 6 |  | Science In Action | BBC World Service | |
| 48 | 14 |  | Paranormal Mysteries | Nic Ryan | Paranormal Mysteries Podcast | |
| 48 | 7 |  | Science Friday | Science Friday and WNYC Studios | |
| 48 | 15 | T | The Human Behavior Podcast | The Human Behavior Podcast | |
| 48 | — |  | Ciência Suja | Ciência Suja | |
| 48 | 117 | T | This Wild Life Conservation Podcast | Amy Turner | |
| 49 | 7 |  | Universe Today Podcast | Fraser Cain | |
| 50 | 9 |  | Real Ghost Stories Online | Real Ghost Stories Online | Paranormal, Supernatural & Horror Radio | |
| 51 | 26 | G | Green Noise | CapeNature | |
| 52 | 18 |  | Nature Podcast | Springer Nature Limited | |
| 53 | — | N | National Security Science Podcast | Brenda Fleming, J. Weston Phippen, Whitney Spivey, Los Alamos National Laboratory | |
| 53 | 9 |  | Your Brain On | Drs. Ayesha and Dean Sherzai | |
| 54 | 17 |  | Ecosystemic Futures | Dyan Finkhousen: CEO of Shoshin Works | |
| 55 | 42 |  | The world, the universe and us | New Scientist | |
| 55 | 9 | B | Best Horse Practices Podcast | Maddy Butcher | |
| 55 | 97 |  | Freakonomics, M.D. | Freakonomics Radio + Stitcher | |
| 56 | 119 |  | TheThinkingAtheist | The Thinking Atheist | |
| 57 | 2 |  | Emergency Medicine Board Bombs | EM Board Bombs | |
| 57 | — |  | Professor Brian Cox Live Q and A Podcast | The Cosmic Shambles Network | |
| 58 | 30 |  | Instant Genius | Our Media | |
| 59 | 23 |  | Statistics Made Simple | Brad R. Fulton, PhD | |
| 59 | 89 |  | Overheard at National Geographic | National Geographic | |
| 62 | 23 |  | BrainStuff | iHeartPodcasts | |
| 62 | — | N | New Books in Gender | New Books Network | |
| 62 | 15 |  | Into the Impossible With Brian Keating | Big Bang Productions Inc. | |
| 63 | 128 |  | COMPLEXITY | Santa Fe Institute | |
| 63 | — | J | JurisDictions: International law podcast | T.M.C. Asser Instituut | |
| 64 | 27 |  | Ground Truths | Eric Topol | |
| 67 | 36 |  | CREOGs Over Coffee | CREOGs Over Coffee | |
| 68 | — |  | So Cultured Podcast | Liv Grant & Taz Shipley | |
| 68 | 10 |  | You Are Not So Smart | You Are Not So Smart | |
| 69 | 17 | L | Learning from Nature: The Biomimicry Podcast with Lily Urmann | Lily Urmann | |
| 69 | — |  | The Horse First: A Veterinary Sport Horse Podcast | Audrey DeClue, DVM | |
