| 1 | — |  | Making Sense with Sam Harris | Sam Harris | |
| 2 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 3 | 11 |  | Radiolab | WNYC Studios | |
| 4 | — |  | Unexplainable | Vox | |
| 5 | 2 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 6 | 1 |  | Ologies with Alie Ward | Alie Ward | |
| 7 | 45 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 8 | 1 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 9 | 55 |  | Blurry Creatures | Blurry Creatures | |
| 10 | 122 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 11 | 1 |  | Science Vs | Spotify Studios | |
| 12 | 5 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 13 | 7 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 14 | 8 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 15 | 4 |  | The Michael Shermer Show | Michael Shermer | |
| 16 | 16 |  | Living Planet | DW | |
| 17 | 50 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 18 | 3 |  | Curious Cases | BBC Radio 4 | |
| 19 | 31 |  | The Life Scientific | BBC Radio 4 | |
| 20 | 35 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 21 | 13 | T | Talks On Psychoanalysis | International Psychoanalytical Association | |
| 22 | 3 |  | More or Less | BBC Radio 4 | |
| 23 | 12 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 24 | 48 |  | Alive Again | iHeartPodcasts | |
| 25 | 88 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 26 | 16 |  | Science Weekly | The Guardian | |
| 27 | — |  | The Astrophysics Podcast | Paul Duffell | |
| 28 | — | T | The Hematologist | The Hematologist | |
| 29 | — |  | When Science Finds a Way | Wellcome | |
| 30 | — | S | Space | BBC World Service | |
| 31 | — | W | Women in Wildlife | Eliza Stott | |
| 32 | — |  | Constant Wonder | BYUradio | |
| 33 | — | D | Dive Deep | LifeFuel365 | |
| 34 | — | E | Etopia Talks | Etopia | |
| 35 | — |  | This Won't Hurt A Bit | FOOLYBOO | |
| 36 | 13 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 37 | 12 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 38 | 25 | T | This Wild Life Conservation Podcast | Amy Turner | |
| 39 | 32 |  | Choiceology with Katy Milkman | Charles Schwab | |
| 40 | 22 | B | Boring History for Sleep | Velvet | |
| 41 | 12 |  | Regenerative Agriculture Podcast | John Kempf | |
| 42 | 128 |  | The Orthobullets Podcast | Orthobullets | |
| 43 | 27 |  | Mythfits | Pionaire Podcasting | |
| 44 | 23 |  | Your Brain On | Drs. Ayesha and Dean Sherzai | |
| 45 | 28 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 46 | 26 |  | Nautilus Narrations | Nautilus | |
| 47 | — | T | The Art of Mathematics | Carol Jacoby | |
| 48 | — | C | Cardio-Homeopathy | Piyush Ranjan | |
| 49 | 25 |  | H2TechTalk | H2Tech | |
| 50 | 24 |  | Ancient Aliens | PodcastOne | |
| 51 | 27 |  | CrowdScience | BBC World Service | |
| 52 | 25 |  | Into the Impossible With Brian Keating | Big Bang Productions Inc. | |
| 53 | 8 |  | Songs 4 FRCR: Radiology FRCR 2A Revision | FRCR Revision | |
| 54 | 26 |  | Most Terrifying Places in America | Travel Channel | |
| 55 | 24 | E | Everyday Neuro: Psychology and Neuroscience Podcast | Dr Janine Cooper: Cognitive Psychologist, Neuroscientist, Neuropsychology researcher. | |
| 56 | 26 | S | Students of Surgery | Martin Brand | |
| 57 | — | B | Believe: Paranormal & UFO Podcast | Kade Moir | |
| 58 | 23 | T | The DemystifySci Podcast | DemystifySci | |
| 59 | 10 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 60 | 27 | P | Plantopia | The American Phytopathological Society (APS) | |
| 61 | 27 | T | The Birding Life Podcast Network | The Birding Life Podcast Network | |
| 62 | 25 | S | Science on the ISS | Steve Nerlich | |
| 63 | 25 | J | Johns Hopkins Malaria Minute | Johns Hopkins Bloomberg School of Public Health | |
| 64 | 25 |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 65 | 25 |  | EverydaySpy Podcast | Andrew Bustamante | |
| 66 | 25 |  | Ground Truths | Eric Topol | |
| 67 | 25 | T | The Herd Health Podcast | Boehringer Ingelheim Animal Health Canada Inc. | |
| 68 | 25 | Y | You Herd Right | Phibro Animal Health | |
| 69 | 25 |  | UnBuild It Podcast | Unbuild It Podcast | |
| 70 | 34 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 71 | 6 |  | BBC Inside Science | BBC Radio 4 | |
| 72 | 25 |  | Universe Today Podcast | Fraser Cain | |
| 73 | 25 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 74 | 28 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 75 | 2 |  | Speaking of Psychology | American Psychological Association | |
| 76 | 107 |  | Science Quickly | Scientific American | |
| 77 | 24 |  | A Life More Wild | Canopy & Stars | |
| 78 | 15 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 79 | 75 |  | The world, the universe and us | New Scientist | |
| 80 | 29 | T | The Power Shift: Decolonising Development | Kate Bird | |
| 81 | 98 |  | Nephilim Death Squad | TopLobsta Productions | |
| 82 | 14 |  | The Psychology Podcast | iHeartPodcasts | |
| 83 | 26 |  | Invisibilia | NPR | |
| 84 | 28 | T | The Perception & Action Podcast | Rob Gray | |
| 85 | 31 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 86 | 28 |  | Rabies Today | United Against Rabies | |
| 87 | 28 | S | Safari Stories | Trunks and Tracks | |
| 88 | 28 |  | RSM River Mechanics Podcast | Stanford Gibson | |
| 89 | 28 | I | International Law | Yale Law School | |
| 90 | 28 | R | Review of International Studies – The podcast | Review of International Studies | |
| 91 | 21 |  | The Wild with Chris Morgan | KUOW News and Information | |
| 92 | 57 |  | That UFO Podcast | That UFO Podcast | |
| 93 | 4 |  | Rewilding the World with Ben Goldsmith | Ben Goldsmith | |
| 94 | 17 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 95 | 73 |  | This Week in Virology | Vincent Racaniello | |
| 96 | 11 | T | The Naked Scientists Podcast | The Naked Scientists | |
| 97 | 41 |  | Unexpected Elements | BBC World Service | |
| 98 | 2 |  | Science Friday | Science Friday and WNYC Studios | |
| 99 | — |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 100 | 2 |  | Discovery | BBC World Service | |
