| 2 | — |  | Making Sense with Sam Harris | Sam Harris | |
| 2 | 4 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 3 | 1 |  | Unexplainable | Vox | |
| 5 | 3 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 7 | 1 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 8 | 3 |  | Ologies with Alie Ward | Alie Ward | |
| 9 | 3 | T | The Birding Life Podcast Network | The Birding Life Podcast Network | |
| 9 | — |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 10 | 17 |  | Blurry Creatures | Blurry Creatures | |
| 15 | 4 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 16 | 20 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 18 | 3 |  | Discovery | BBC World Service | |
| 20 | 7 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 21 | 2 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 21 | 20 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 22 | 28 |  | The Life Scientific | BBC Radio 4 | |
| 23 | 57 | D | Data Science Decoded | Mike E | |
| 24 | 6 |  | BBC Inside Science | BBC Radio 4 | |
| 30 | 9 |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 30 | 1 |  | The Quanta Podcast | Quanta Magazine | |
| 31 | 3 |  | The Michael Shermer Show | Michael Shermer | |
| 34 | 47 |  | Naturebang | BBC Radio 4 | |
| 34 | — |  | Let's Learn Everything! | Maximum Fun | |
| 35 | 6 | W | Wildest Kruger Stories | Karolina Norée | |
| 37 | 23 |  | Ask a Spaceman! | Paul M. Sutter | |
| 38 | 11 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 38 | 16 | T | The Deep-Sea Podcast | Thomas Linley | |
| 40 | — |  | The world, the universe and us | New Scientist | |
| 40 | 90 |  | Science Magazine Podcast | Science Magazine | |
| 44 | — | B | Believe: Paranormal & UFO Podcast | Kade Moir | |
| 44 | 4 |  | Short Wave | NPR | |
| 45 | 18 |  | Science Friday | Science Friday and WNYC Studios | |
| 45 | 63 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 46 | 16 |  | The Alpha Male Coach Podcast | Kevin Aillaud | |
| 48 | 9 |  | Speaking of Psychology | American Psychological Association | |
| 49 | 20 |  | CrowdScience | BBC World Service | |
| 49 | 8 |  | New Books in Psychoanalysis | Marshall Poe | |
| 52 | 67 | R | Rewilding Earth Podcast | The Rewilding Institute | |
| 52 | 12 |  | Radiowissen | Bayerischer Rundfunk | |
| 53 | — |  | That UFO Podcast | That UFO Podcast | |
| 54 | — |  | The LIUniverse with Dr. Charles Liu | theliuniverse | |
| 54 | 66 | N | New Books in Economics | Marshall Poe | |
| 56 | — |  | Gastroenterology Learning Network | Gastroenterology Learning Network | |
| 57 | 4 |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 57 | — | T | The Universe Speaks in Numbers | Faber and Faber | |
| 57 | — |  | Ancient Aliens | PodcastOne | |
| 57 | 28 | T | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 58 | 13 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 59 | — |  | Curiosity Theory | Dr. Dakotah Tyler & Justin Shaifer | |
| 59 | 9 |  | Wild Times: Wildlife Education | Wildlife Educator - Forrest Galante | |
| 60 | 44 |  | TheThinkingAtheist | The Thinking Atheist | |
| 60 | — | T | The Skin Science Podcast with Thomas Hitchcock, Ph.D. | PR | |
| 61 | 12 | S | Safari Stories | Trunks and Tracks | |
| 61 | 83 | Q | Question of the Week, from the Naked Scientists | Dr Chris Smith | |
| 62 | 17 |  | The Science of Birds | Ivan Phillipsen | |
| 63 | — |  | The Origins Podcast with Lawrence Krauss | Lawrence M. Krauss | |
| 64 | 24 |  | Freakonomics, M.D. | Freakonomics Radio + Stitcher | |
| 64 | — | O | Owens Recovery Science | Johnny Owens | |
| 64 | — |  | Breaking Math Podcast | Autumn Phaneuf & Noah Giansiracusa | |
| 65 | — |  | The Native Plant Podcast | Native Plant Podcast | |
| 66 | 31 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 67 | 21 |  | Sasquatch Tracks | Micah Hanks, Dakota Waddell and Jeff Smith | |
| 68 | 2 |  | Expanded Perspectives | Expanded Perspectives | |
| 68 | — |  | From Concept to Medicine - A Comprehensive Drug Development Journey | Jim Mitchell | |
| 69 | — |  | The Cartesian Cafe | Timothy Nguyen | |
| 70 | — | T | The Laws of Stan | Stanley Rappaport | |
| 70 | 46 |  | Safety Third | Safety Third | |
| 72 | 50 |  | CREOGs Over Coffee | CREOGs Over Coffee | |
| 73 | 29 |  | You Are Not So Smart | You Are Not So Smart | |
| 74 | 16 |  | Relebogile Mabotja hosts The Naked Scientist | Radio 702 | |
| 76 | 21 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 76 | 28 |  | Completely Arbortrary | Completely Arbortrary | |
| 78 | 29 | T | THE TRUE IDENTITY OF THE QUANTUM | Kay Strang | |
| 78 | — |  | Geology Bites | Oliver Strimpel | |
| 79 | 48 |  | Songs 4 FRCR: Radiology FRCR 2A Revision | FRCR Revision | |
| 83 | 27 |  | The Behavioral Observations Podcast with Matt Cicoria | Matt Cicoria | |
| 84 | 9 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 85 | 46 |  | Overheard at National Geographic | National Geographic | |
| 85 | — | H | Hiss & Tell: Cat Behavior and Beyond | Kristiina Wilson | |
| 85 | — | A | Ask A Biologist Podcast | Charles Kazilek (a.k.a. Dr. Biology) - School of Life Sciences, Arizona State University | |
| 89 | 37 |  | The Science of Everything Podcast | James Fodor | |
| 89 | 14 |  | The Wild with Chris Morgan | KUOW News and Information | |
| 91 | 27 |  | Drilled | Pushkin Industries | |
| 92 | — |  | The Micah Hanks Program | Micah Hanks | |
| 92 | 27 |  | A Voyage to Antarctica | UKAHT | |
| 94 | 34 |  | MinuteEarth | Minute Earth | |
| 95 | 59 |  | How We're Wired | The Bertarelli Foundation | |
| 98 | 11 |  | Living Planet | DW | |
| 99 | 55 |  | The Modern Extractor | Jason Showard | |
| 100 | 26 |  | Houston We Have a Podcast | National Aeronautics and Space Administration (NASA) | |
| 103 | 13 |  | Dr. Chapa’s OBGYN Clinical Pearls | Dr. Chapa’s Clinical Pearls | |
| 104 | 37 | J | Just the Zoo of Us | Ellen & Christian Weatherford | |
| 105 | — |  | Ophthalmology off the Grid by Eyetube | Eyetube | |
| 105 | 15 | A | Asimov Press | Asimov Press | |
| 106 | 10 |  | 5 Live Science Podcast | BBC Radio 5 Live | |
| 107 | 47 |  | From First Principles | Krishna Choudhary and Lester Nare | |
| 108 | 36 |  | UFO Chronicles Podcast | Nik Hunter | |
| 109 | 43 |  | TED Talks Science and Medicine | TED | |
| 110 | 9 |  | Somewhere in the Skies | SpectreVision Radio | |
| 111 | 32 |  | Choiceology with Katy Milkman | Charles Schwab | |
