| 1 | — |  | Making Sense with Sam Harris | Sam Harris | |
| 2 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 3 | 3 |  | Curious Cases | BBC Radio 4 | |
| 4 | — |  | StarTalk Radio | Neil deGrasse Tyson | |
| 5 | — |  | Ologies with Alie Ward | Alie Ward | |
| 6 | 3 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 7 | 9 |  | Radiolab | WNYC Studios | |
| 8 | 2 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 9 | 6 |  | Unexplainable | Vox | |
| 10 | 7 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 11 | 4 |  | The world, the universe and us | New Scientist | |
| 12 | 4 |  | Science Vs | Spotify Studios | |
| 13 | 8 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 14 | 22 |  | Science Weekly | The Guardian | |
| 15 | 37 |  | Living Planet | DW | |
| 16 | 5 |  | When Science Finds a Way | Wellcome | |
| 17 | 48 | P | Pharmacology Basics | Instructor Gwin | |
| 18 | 6 | P | Psychology | Yale School of Medicine | |
| 19 | 12 |  | More or Less | BBC Radio 4 | |
| 20 | 7 |  | Blurry Creatures | Blurry Creatures | |
| 21 | 60 |  | Invisibilia | NPR | |
| 22 | 7 |  | Speaking of Psychology | American Psychological Association | |
| 23 | 113 |  | Nature Podcast | Springer Nature Limited | |
| 24 | 162 |  | Drilled | Pushkin Industries | |
| 25 | 114 |  | Relebogile Mabotja hosts The Naked Scientist | Radio 702 | |
| 26 | — |  | Climate One | Climate One from The Commonwealth Club | |
| 27 | 13 |  | Short Wave | NPR | |
| 28 | 161 |  | Mythfits | Pionaire Podcasting | |
| 29 | 141 |  | All In The Mind | ABC | |
| 30 | — | V | VoxTalks Economics | VoxTalks | |
| 31 | — | M | MedLink Neurology Podcast | MedLink Neurology | |
| 32 | — | T | The Pursuit of Outdoor Clues | Tristan Gooley | |
| 33 | 15 |  | The Wild with Chris Morgan | KUOW News and Information | |
| 34 | — |  | The Common Descent Podcast | Common Descent | |
| 35 | 16 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 36 | — |  | Science Talk | Scientific American | |
| 37 | — |  | The 365 Days of Astronomy | 365DaysOfAstronomy.org | |
| 38 | — | T | Talking Euretina | Whipsmart Media | |
| 39 | — |  | The Peter Byck Show | Peter Byck | |
| 40 | — | G | GEMCAST | Christina Shenvi | |
| 41 | 19 |  | Speed & Scale | TED | |
| 42 | 19 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 43 | 23 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 44 | 7 |  | CrowdScience | BBC World Service | |
| 45 | 21 |  | Robinson's Podcast | Robinson Erhardt | |
| 46 | 19 |  | The Psychology Podcast | iHeartPodcasts | |
| 47 | 22 | T | The Birding Life Podcast Network | The Birding Life Podcast Network | |
| 48 | 63 |  | Freakonomics, M.D. | Freakonomics Radio + Stitcher | |
| 49 | 3 |  | The Science of Everything Podcast | James Fodor | |
| 50 | 22 |  | In Defense of Plants Podcast | In Defense of Plants | |
| 51 | 25 |  | The Life Scientific | BBC Radio 4 | |
| 52 | 23 | W | Wildest Kruger Stories | Karolina Norée | |
| 53 | 84 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 54 | 24 |  | Discovery | BBC World Service | |
| 55 | 17 |  | Rewilding the World with Ben Goldsmith | Ben Goldsmith | |
| 56 | 23 | B | Because Why?! The Science and Society Pod. | Brianne West | |
| 57 | 23 | W | What The Duck?! | ABC | |
| 58 | 26 |  | Scotland Outdoors | BBC Radio Scotland | |
| 59 | 24 |  | TED Talks Science and Medicine | TED | |
| 60 | 21 |  | Bugs Need Heroes | BugsNeedHeroes | |
| 61 | 24 |  | Oceans: Life Under Water | Crowd Network | Greenpeace UK | |
| 62 | 22 |  | Origin Stories | The Leakey Foundation | |
| 63 | 22 | T | The Best of Making Sense with Sam Harris | Sam Harris | |
| 64 | 22 |  | Brave New Planet | Pushkin Industries | |
| 65 | 22 | C | Conservation and Science | Tommy's Outdoors | |
| 66 | 22 | T | The Dairy Podcast Show | Wisenetix | |
| 67 | 19 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 68 | 23 |  | Outside/In | NHPR | |
| 69 | 14 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 70 | 23 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 71 | 22 | G | Green Noise | CapeNature | |
| 72 | 19 | G | Guardians of the River | Wild Bird Trust, NGOWP, House of Pod | |
| 73 | 3 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 74 | 24 |  | Choiceology with Katy Milkman | Charles Schwab | |
| 75 | 16 |  | The Science of Birds | Ivan Phillipsen | |
| 76 | 22 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 77 | 23 |  | Why This Universe? | Dan Hooper, Shalma Wegsman | |
| 78 | 22 |  | Ancient Aliens | PodcastOne | |
| 79 | 22 |  | Alive Again | iHeartPodcasts | |
| 80 | 22 |  | The Quanta Podcast | Quanta Magazine | |
| 81 | 21 | 1 | 1000 Antworten | SWR | |
| 82 | 6 |  | BBC Inside Science | BBC Radio 4 | |
| 83 | 22 |  | Future Ecologies | Future Ecologies | |
| 84 | 22 | S | Social Work Radio | Social Work Radio | |
| 85 | 22 | T | The Science of Personality Podcast | Hogan Assessments | |
| 86 | 22 | B | BirdTalk | ProItUp Optics | |
| 87 | 20 |  | Chemistry For Your Life | Melissa and Jam, Bleav | |
| 88 | 20 |  | Crime Pays But Botany Doesn't | Tony Santore | |
| 89 | 20 |  | The House of Surgery | The American College of Surgeons | |
| 90 | 20 |  | Real Organic Podcast | Real Organic Project | |
| 91 | 17 |  | Universe Today Podcast | Fraser Cain | |
| 92 | 26 |  | New Books in Psychoanalysis | Marshall Poe | |
| 93 | 18 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 94 | 8 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 95 | 23 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 96 | 23 |  | This Week in Cardiology | Medscape | |
| 97 | 23 |  | New Books in Critical Theory | Marshall Poe | |
| 98 | 1 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 99 | 28 |  | Regenerative Agriculture Podcast | John Kempf | |
| 100 | 2 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
