| 1 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 2 | 1 |  | Making Sense with Sam Harris | Sam Harris | |
| 3 | 2 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 4 | 6 |  | More or Less | BBC Radio 4 | |
| 5 | 3 |  | Radiolab | WNYC Studios | |
| 6 | 6 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 7 | 3 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 8 | 1 |  | Ologies with Alie Ward | Alie Ward | |
| 9 | 3 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 10 | 9 |  | Overheard at National Geographic | National Geographic | |
| 11 | — |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 12 | 4 |  | The Psychology Podcast | iHeartPodcasts | |
| 13 | 6 |  | Living Planet | DW | |
| 14 | 8 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 15 | 4 |  | Unexplainable | Vox | |
| 16 | 1 |  | Science Vs | Spotify Studios | |
| 17 | 3 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 18 | 5 |  | Curious Cases | BBC Radio 4 | |
| 19 | 95 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 20 | 57 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 21 | 4 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 22 | 2 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 23 | 95 |  | Science In Action | BBC World Service | |
| 24 | 8 |  | ScienceStuff | iHeartPodcasts | |
| 25 | — |  | The Climate Question | BBC World Service | |
| 26 | 74 | T | The Germs and Jargon Podcast | Dr. Mark Miller and Mr. Jonathan Hope | |
| 27 | 90 | S | Safari Stories | Trunks and Tracks | |
| 28 | 76 |  | Ancient Aliens | PodcastOne | |
| 29 | 168 |  | Robinson's Podcast | Robinson Erhardt | |
| 30 | 92 |  | The Astrophysics Podcast | Paul Duffell | |
| 31 | 10 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 32 | 20 |  | Choiceology with Katy Milkman | Charles Schwab | |
| 33 | 15 |  | CrowdScience | BBC World Service | |
| 34 | — |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 35 | — |  | Votre cerveau | France Culture | |
| 36 | 8 |  | Science Weekly | The Guardian | |
| 37 | — |  | The Medbullets Step 1 Podcast | Medbullets | |
| 38 | — |  | I Know Dino: The Big Dinosaur Podcast | I KNOW DINO, LLC | |
| 39 | — |  | Sciences et Ecologie | France Inter | |
| 40 | — | F | Fresh Thinking by Snowden Optiro | Snowden Optiro | |
| 41 | — | A | Animals at Home Network | AAHN | |
| 42 | — | E | Educational Psychology for Everyone! | Katja Upadyaya (University of Helsinki) | |
| 43 | — | I | IFA Podcasts | The International Fertilizer Association (IFA) | |
| 44 | — | J | JAXA Space Education Center Podcast | JAXA | |
| 45 | 13 |  | That UFO Podcast | That UFO Podcast | |
| 46 | 17 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 47 | 20 |  | The Quanta Podcast | Quanta Magazine | |
| 48 | 22 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 49 | 14 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 50 | 25 |  | The Nature Of with Willow Defebaugh | Atmos | |
| 51 | 6 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 52 | 28 |  | Multiverse 5D @ M5D | Multiverse 5D Network | |
| 53 | 1 |  | Mysterious Universe | 8th Kind | |
| 54 | 20 |  | Jung Chicago Radio | C. G. Jung Institute of Chicago | |
| 55 | 25 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 56 | 20 |  | BrainStuff | iHeartPodcasts | |
| 57 | 16 |  | HOLOSKY PODCAST | Holosky Podcast | |
| 58 | 28 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 59 | 28 |  | Rewilding the World with Ben Goldsmith | Ben Goldsmith | |
| 60 | 27 |  | Planetary Radio: Space Exploration, Astronomy and Science | The Planetary Society | |
| 61 | 2 |  | Discovery | BBC World Service | |
| 62 | 76 |  | Paranormal Mysteries | Nic Ryan | Paranormal Mysteries Podcast | |
| 63 | 27 |  | Into the Impossible With Brian Keating | Big Bang Productions Inc. | |
| 64 | 19 |  | Need To Know | Bryce Zabel | |
| 65 | 42 |  | Invisibilia | NPR | |
| 66 | 27 |  | Science Rules! with Bill Nye | Stitcher & Bill Nye | |
| 67 | 25 |  | EverydaySpy Podcast | Andrew Bustamante | |
| 68 | 31 |  | Blurry Photos | David Flora | |
| 69 | 23 |  | Behavioral Grooves Podcast | Kurt Nelson, PhD and Tim Houlihan | |
| 70 | 32 |  | Wie die Tiere | Radio Bremen | |
| 71 | 13 |  | Blurry Creatures | Blurry Creatures | |
| 72 | 22 |  | The Rumen Room Podcasts | cwestwood | |
| 73 | 33 | N | New Books in Political Science | New Books Network | |
| 74 | 18 | A | Ask the Naked Scientists | Dr Chris Smith | |
| 75 | 46 |  | BBC Inside Science | BBC Radio 4 | |
| 76 | 32 |  | Virtual Physician Shadowing | MedSchoolCoach | |
| 77 | 30 |  | Diet Doctor Podcast | dietdoctorpodcast | |
| 78 | 30 | T | The ABCs of SBC | UNICEF SBC | |
| 79 | 30 | T | Talking Child Development | ccfdau | |
| 80 | 29 | T | The Berm by UKY SME | UKY SME | |
| 81 | 26 |  | Speaking of Psychology | American Psychological Association | |
| 82 | 18 | S | Students of Surgery | Martin Brand | |
| 83 | 30 | T | The Soil Health Hub Podcast | Soil Health Hub | |
| 84 | 41 | T | The Human Behavior Podcast | The Human Behavior Podcast | |
| 85 | 49 |  | Unexpected Elements | BBC World Service | |
| 86 | 11 |  | WEAPONIZED with Jeremy Corbell & George Knapp | Jeremy Corbell and George Knapp | |
| 87 | 21 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 88 | 28 | I | International Law | Yale Law School | |
| 89 | 7 |  | Science Friday | Science Friday and WNYC Studios | |
| 90 | 29 |  | All Creatures Podcast | All Creatures Podcast | |
| 91 | 18 |  | This Week in Space (Audio) | TWiT | |
| 92 | 27 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 93 | 31 |  | Get Out Alive | Ashley Bray | |
| 94 | 31 |  | TED Talks Science and Medicine | TED | |
| 95 | 28 |  | Naturebang | BBC Radio 4 | |
| 96 | 13 |  | Physics World Weekly Podcast | Physics World | |
| 97 | 72 |  | You Are Not So Smart | You Are Not So Smart | |
| 98 | 28 |  | Freakonomics, M.D. | Freakonomics Radio + Stitcher | |
| 99 | 24 |  | Astronomy Daily: Space News Updates | bitesz.com | |
| 100 | 29 |  | Naked Astronomy, from the Naked Scientists | The Naked Scientists | |
