| 2 | — |  | Unexplainable | Vox | |
| 2 | 13 |  | Making Sense with Sam Harris | Sam Harris | |
| 5 | 3 |  | Ologies with Alie Ward | Alie Ward | |
| 6 | 3 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 6 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 8 | 3 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 9 | 7 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 11 | 1 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 12 | 16 | T | The Birding Life Podcast Network | The Birding Life Podcast Network | |
| 13 | 4 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 15 | 38 |  | Discovery | BBC World Service | |
| 18 | 2 |  | BBC Inside Science | BBC Radio 4 | |
| 19 | — |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 21 | — |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 22 | — |  | CREOGs Over Coffee | CREOGs Over Coffee | |
| 24 | — |  | Safety Third | Safety Third | |
| 27 | 5 |  | Blurry Creatures | Blurry Creatures | |
| 27 | 14 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 27 | 4 |  | Science Friday | Science Friday and WNYC Studios | |
| 28 | 14 |  | The Michael Shermer Show | Michael Shermer | |
| 29 | 8 |  | CrowdScience | BBC World Service | |
| 29 | 16 | W | Wildest Kruger Stories | Karolina Norée | |
| 30 | 121 |  | The Alpha Male Coach Podcast | Kevin Aillaud | |
| 31 | 6 |  | Songs 4 FRCR: Radiology FRCR 2A Revision | FRCR Revision | |
| 31 | 14 |  | The Quanta Podcast | Quanta Magazine | |
| 34 | 8 |  | Let's Learn Everything! | Maximum Fun | |
| 35 | 9 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 36 | 14 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 36 | 10 |  | How We're Wired | The Bertarelli Foundation | |
| 39 | 22 |  | Overheard at National Geographic | National Geographic | |
| 39 | 5 |  | Speaking of Psychology | American Psychological Association | |
| 40 | 52 |  | Freakonomics, M.D. | Freakonomics Radio + Stitcher | |
| 40 | — |  | Radiowissen | Bayerischer Rundfunk | |
| 40 | 53 |  | The world, the universe and us | New Scientist | |
| 41 | 6 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 41 | 81 |  | New Books in Psychoanalysis | Marshall Poe | |
| 44 | — |  | The Modern Extractor | Jason Showard | |
| 44 | — | B | Believe: Paranormal & UFO Podcast | Kade Moir | |
| 44 | 8 |  | You Are Not So Smart | You Are Not So Smart | |
| 45 | 29 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 46 | — |  | Sasquatch Tracks | Micah Hanks, Dakota Waddell and Jeff Smith | |
| 47 | 34 | C | Crime Theories: Off the Record | Karen Armenta | |
| 48 | 6 |  | Short Wave | NPR | |
| 48 | 103 |  | Completely Arbortrary | Completely Arbortrary | |
| 49 | 95 | S | Safari Stories | Trunks and Tracks | |
| 49 | — | T | THE TRUE IDENTITY OF THE QUANTUM | Kay Strang | |
| 50 | 55 |  | Wild Times: Wildlife Education | Wildlife Educator - Forrest Galante | |
| 50 | 16 |  | The Life Scientific | BBC Radio 4 | |
| 52 | 16 |  | The Science of Everything Podcast | James Fodor | |
| 53 | 2 |  | That UFO Podcast | That UFO Podcast | |
| 54 | 103 |  | The LIUniverse with Dr. Charles Liu | theliuniverse | |
| 54 | 19 | T | The Deep-Sea Podcast | Thomas Linley | |
| 55 | 17 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 56 | — |  | The Behavioral Observations Podcast with Matt Cicoria | Matt Cicoria | |
| 57 | 25 |  | Ancient Aliens | PodcastOne | |
| 58 | — |  | Relebogile Mabotja hosts The Naked Scientist | Radio 702 | |
| 60 | 134 |  | MinuteEarth | Minute Earth | |
| 60 | 52 |  | Ask a Spaceman! | Paul M. Sutter | |
| 60 | — |  | From First Principles | Krishna Choudhary and Lester Nare | |
| 61 | 8 |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 62 | 6 |  | Universe Today Podcast | Fraser Cain | |
| 63 | 30 |  | The Origins Podcast with Lawrence Krauss | Lawrence M. Krauss | |
| 65 | 20 |  | A Voyage to Antarctica | UKAHT | |
| 66 | 3 |  | Expanded Perspectives | Expanded Perspectives | |
| 66 | 10 |  | TED Talks Science and Medicine | TED | |
| 68 | 17 | B | BJA: British Journal of Anaesthesia | Rik Thomas, Podcast Editor | |
| 70 | — | E | Easy Physics | Easy Physics | |
| 73 | — |  | Battle For African Agriculture Podcast | Million Belay | |
| 75 | 17 |  | The Wild with Chris Morgan | KUOW News and Information | |
| 75 | 13 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 76 | 19 |  | Into the Impossible With Brian Keating | Big Bang Productions Inc. | |
| 77 | — |  | Flash Forward | Rose Eveleth | |
| 79 | 25 |  | The Science of Birds | Ivan Phillipsen | |
| 80 | — | D | Data Science Decoded | Mike E | |
| 80 | — |  | What Remains | WRAL News | Raleigh, North Carolina | |
| 81 | — |  | Naturebang | BBC Radio 4 | |
| 82 | 43 |  | The Common Descent Podcast | Common Descent | |
| 84 | 28 |  | Robinson's Podcast | Robinson Erhardt | |
| 85 | 19 | T | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 87 | 47 |  | Living Planet | DW | |
| 89 | 57 |  | Unexpected Elements | BBC World Service | |
| 90 | 25 | A | Asimov Press | Asimov Press | |
| 91 | 11 |  | Science Quickly | Scientific American | |
| 95 | 43 |  | All In The Mind | ABC | |
| 96 | 16 |  | 5 Live Science Podcast | BBC Radio 5 Live | |
| 97 | — |  | Proxy with Yowei Shaw | Y3 Productions | |
| 97 | 91 |  | Big Picture Science | Big Picture Science | |
| 98 | 11 |  | Science In Action | BBC World Service | |
| 101 | 31 |  | Somewhere in the Skies | SpectreVision Radio | |
| 101 | — |  | Talk Nerdy with Cara Santa Maria | Cara Santa Maria | |
| 102 | 29 |  | Your Brain On | Drs. Ayesha and Dean Sherzai | |
| 104 | 2 |  | TheThinkingAtheist | The Thinking Atheist | |
| 106 | 42 | F | FertiliPod: Reproductive Medicine and Fertility Podcast for Assisted Reproduction Professionals | FertiliPod by IVIRMA | |
| 108 | — |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 110 | 36 |  | EverydaySpy Podcast | Andrew Bustamante | |
| 111 | 45 | W | World of Sharks | Save Our Seas Foundation | |
| 112 | 77 |  | The End Of The World with Josh Clark | iHeartPodcasts | |
| 113 | 7 | L | Lifeworlds | Alexa Firmenich | |
| 114 | 60 |  | This Week in Virology | Vincent Racaniello | |
| 116 | 81 |  | Dr. Chapa’s OBGYN Clinical Pearls | Dr. Chapa’s Clinical Pearls | |
