| 1 | — |  | Making Sense with Sam Harris | Sam Harris | |
| 2 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 3 | 3 |  | Unexplainable | Vox | |
| 4 | 1 |  | Ologies with Alie Ward | Alie Ward | |
| 5 | 6 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 6 | 2 |  | Curious Cases | BBC Radio 4 | |
| 7 | 12 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 8 | 3 |  | Radiolab | WNYC Studios | |
| 9 | 180 | S | Students of Surgery | Martin Brand | |
| 10 | 6 |  | The Psychology Podcast | iHeartPodcasts | |
| 11 | 3 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 12 | 16 |  | Universe Today Podcast | Fraser Cain | |
| 13 | 5 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 14 | 15 |  | Choiceology with Katy Milkman | Charles Schwab | |
| 15 | 8 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 16 | 7 |  | Speaking of Psychology | American Psychological Association | |
| 17 | 15 |  | The Quanta Podcast | Quanta Magazine | |
| 18 | 6 |  | Science Vs | Spotify Studios | |
| 19 | 9 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 20 | 45 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 21 | 33 |  | CrowdScience | BBC World Service | |
| 22 | 9 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 23 | 9 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 24 | 1 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 25 | 10 |  | More or Less | BBC Radio 4 | |
| 26 | 29 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 27 | 91 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 28 | 120 |  | Discovery | BBC World Service | |
| 29 | 130 |  | Into the Impossible With Brian Keating | Big Bang Productions Inc. | |
| 30 | — |  | The Future of Everything | Stanford Engineering | |
| 31 | — |  | ScienceStuff | iHeartPodcasts | |
| 32 | — | D | Data Science Decoded | Mike E | |
| 33 | 127 |  | Most Terrifying Places in America | Travel Channel | |
| 34 | — |  | Chemistry For Your Life | Melissa and Jam, Bleav | |
| 35 | — |  | Need To Know | Bryce Zabel | |
| 36 | — |  | Proxy with Yowei Shaw | Y3 Productions | |
| 37 | 15 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 38 | — |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 39 | — | F | Fire Science Show | Wojciech Wegrzynski | |
| 40 | — |  | Deep Insights with Mining Review Africa | Mining Review Africa | |
| 41 | — |  | UAP Unidentified Alien Podcast | Gamut Podcast Network | |
| 42 | — | A | Arthroscopy Podcast | AANA | |
| 43 | — | T | Talking Naturally | Charlie Moores / Rare Bird Alert / WildSounds | |
| 44 | — | C | Cherry Picked | Jessica.fearnley | |
| 45 | — | A | Agri-History | Brandon | |
| 46 | 29 |  | Blurry Creatures | Blurry Creatures | |
| 47 | 7 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 48 | 23 |  | All In The Mind | ABC | |
| 49 | 29 | T | The Human Behavior Podcast | The Human Behavior Podcast | |
| 50 | 26 |  | Overheard at National Geographic | National Geographic | |
| 51 | 26 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 52 | 31 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 53 | 3 |  | Science Weekly | The Guardian | |
| 54 | 28 |  | Alive Again | iHeartPodcasts | |
| 55 | 28 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 56 | 26 | G | Green Noise | CapeNature | |
| 57 | 24 |  | Clearer Thinking with Spencer Greenberg | Spencer Greenberg | |
| 58 | 23 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 59 | 28 | T | The Universe Speaks in Numbers | Faber and Faber | |
| 60 | 17 | R | RadioGraphics Podcast | RSNA | Radiological Society of North America (RSNA) | |
| 61 | 20 | T | This Wild Life Conservation Podcast | Amy Turner | |
| 62 | 28 |  | Ask a Spaceman! | Paul M. Sutter | |
| 63 | 27 |  | Sustainability, Climate Change, Renewable Energy, Politics, Activism, Biodiversity, Carbon Footprint, Wildlife, Regenerative | Mia Funk | |
| 64 | 20 | R | Radiology Podcast | RSNA | The Radiological Society of North America | |
| 65 | 26 |  | Mythfits | Pionaire Podcasting | |
| 66 | 29 |  | Why This Universe? | Dan Hooper, Shalma Wegsman | |
| 67 | 29 |  | The Couples Therapist Couch | Shane Birkel | |
| 68 | 26 |  | Bedtime Astronomy | Synthetic Universe | |
| 69 | 21 | M | Mushroom Revival Podcast | Alex Dorr | |
| 70 | 25 | D | DNA Dialogues: Conversations in Genetic Counseling Research | Journal of Genetic Counseling (Jehannine Austin, Naomi Wagner, Khalida Liaquat, Kate Wilson and DNA Today’s Kira Dineen) | |
| 71 | — | C | Clinically Thinking | Clinically Thinking | |
| 72 | 26 |  | DNA Today: A Genetics Podcast | Kira Dineen, Gene Pool Media | |
| 73 | 26 | S | Soul Healing Love | Soul Healing Love | |
| 74 | 25 | I | It Happened To Me: A Rare Disease and Medical Challenges Podcast | Cathy Gildenhorn, Beth Glassman, and Kira Dineen (DNA Today) | |
| 75 | 23 |  | The Science of Birds | Ivan Phillipsen | |
| 76 | 25 | T | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 77 | 20 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 78 | 20 | T | The Power Shift: Decolonising Development | Kate Bird | |
| 79 | 9 |  | Short Wave | NPR | |
| 80 | 16 |  | Astrum Space | Astrum | |
| 81 | 22 |  | Clinician's Brief: The Podcast | Clinician's Brief | |
| 82 | 22 |  | What Remains | WRAL News | Raleigh, North Carolina | |
| 83 | 22 | C | COR2ED - Obstetrics & Gynecology Medical Conversation | COR2ED Medical Education | |
| 84 | 31 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 85 | 16 |  | BrainStuff | iHeartPodcasts | |
| 86 | 5 | B | Buildings + Beyond Podcast | Steven Winter Associates | |
| 87 | 20 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 88 | 16 | F | Farming Today | BBC Radio 4 | |
| 89 | 89 |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 90 | 45 |  | Relebogile Mabotja hosts The Naked Scientist | Radio 702 | |
| 91 | 17 | A | AI in Qualitative Research | Dr Susanne Friese | |
| 92 | 36 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 93 | — |  | The Best of Coast to Coast AM | iHeartPodcasts and Coast to Coast AM | |
| 94 | 28 |  | Mysterious Radio: Paranormal, UFO and Lore Interviews | Podcast Audio House | |
| 95 | 25 |  | Rare Earth | BBC Radio 4 | |
| 96 | 21 |  | Real Ghost Stories Online | Real Ghost Stories Online | Paranormal, Supernatural & Horror Radio | |
| 97 | 22 | B | Boring History for Sleep | Velvet | |
| 98 | 3 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 99 | 37 |  | Nature Podcast | Springer Nature Limited | |
| 100 | 27 |  | Science Friday | Science Friday and WNYC Studios | |
