| 1 | — |  | The Rest Is Science | Goalhanger | |
| 2 | — |  | Get Birding | Peanut & Crumb | |
| 3 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 4 | — |  | Curious Cases | BBC Radio 4 | |
| 5 | — |  | More or Less | BBC Radio 4 | |
| 6 | 1 |  | Boring History for Sleep | Velvet | |
| 7 | 1 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 8 | 1 |  | Radiolab | WNYC Studios | |
| 9 | 1 |  | BBC Inside Science | BBC Radio 4 | |
| 10 | 2 |  | Ologies with Alie Ward | Alie Ward | |
| 11 | 3 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 12 | 2 |  | Making Sense with Sam Harris | Sam Harris | |
| 13 | 2 |  | Science Weekly | The Guardian | |
| 14 | 7 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 15 | 3 |  | Life Without | BBC Radio 4 | |
| 16 | 3 |  | The world, the universe and us | New Scientist | |
| 17 | 3 |  | That UFO Podcast | That UFO Podcast | |
| 18 | 3 |  | Scotland Outdoors | BBC Radio Scotland | |
| 19 | 3 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 20 | 8 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 21 | 4 |  | CrowdScience | BBC World Service | |
| 22 | 1 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 23 | 4 |  | That's Absurd Please Elaborate | Trace Elements Media | |
| 24 | 13 |  | Chris Skinner's Countryside Podcasts | High Ash Farm | |
| 25 | — |  | Safe to Drink | NHPR | |
| 26 | 7 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 27 | 11 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 28 | 1 |  | Farming Today | BBC Radio 4 | |
| 29 | 5 |  | The Plodcast | Our Media | |
| 30 | 4 |  | The Life Scientific | BBC Radio 4 | |
| 31 | 3 |  | That's Just Wild | Fresh Air | |
| 32 | 10 |  | The Psychology Podcast | iHeartPodcasts | |
| 33 | 2 |  | Science Vs | Spotify Studios | |
| 34 | 22 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 35 | 13 |  | WEAPONIZED with Jeremy Corbell & George Knapp | Jeremy Corbell and George Knapp | |
| 36 | 11 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 37 | 9 |  | Rewilding the World with Ben Goldsmith | Ben Goldsmith | |
| 38 | 6 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 39 | 3 |  | Astrum Space | Astrum | |
| 40 | 5 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 41 | 9 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 42 | 7 |  | The Common Descent Podcast | Common Descent | |
| 43 | 13 |  | Unexpected Elements | BBC World Service | |
| 44 | 1 |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 45 | 6 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 46 | 5 |  | Unexplainable | Vox | |
| 47 | 8 |  | A Question of Science | The Francis Crick Institute | |
| 48 | 7 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 49 | 20 |  | Universe Today Podcast | Fraser Cain | |
| 50 | 2 |  | Paranormal Mysteries | Nic Ryan | Paranormal Mysteries Podcast | |
| 51 | 19 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 52 | 19 |  | New Books in Critical Theory | Marshall Poe | |
| 53 | 13 |  | Dr Karl Podcast | triplej | |
| 54 | 5 |  | Overheard at National Geographic | National Geographic | |
| 55 | 6 |  | Discovery | BBC World Service | |
| 56 | 3 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 57 | 5 |  | Speaking of Psychology | American Psychological Association | |
| 58 | 33 |  | You Are Not So Smart | You Are Not So Smart | |
| 59 | 7 |  | Space Nuts: Astronomy Insights & Cosmic Discoveries | Professor Fred Watson and Andrew Dunkley | |
| 60 | 5 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 61 | 4 |  | All In The Mind | ABC | |
| 62 | 63 |  | The Michael Shermer Show | Michael Shermer | |
| 63 | 72 |  | The Climate Question | BBC World Service | |
| 64 | 45 |  | Somewhere in the Skies | SpectreVision Radio | |
| 65 | 3 |  | UFO Chronicles Podcast | Nik Hunter | |
| 66 | 16 |  | Babbage from The Economist | The Economist | |
| 67 | 22 |  | Nature Podcast | Springer Nature Limited | |
| 68 | 16 |  | Mysterious Universe | 8th Kind | |
| 69 | 9 |  | At the Edge | Peter Cairns | |
| 70 | 6 |  | Instant Genius | Our Media | |
| 71 | 8 |  | Bigfoot Society | Jeremiah Byron | |
| 72 | 18 |  | Constant Wonder | BYUradio | |
| 73 | 1 |  | Naturebang | BBC Radio 4 | |
| 74 | 40 |  | Earthfiles Podcast with Linda Moulton Howe | Linda Moulton Howe | |
| 75 | 24 |  | Houston We Have a Podcast | National Aeronautics and Space Administration (NASA) | |
| 76 | 51 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 77 | 2 |  | Terrible Lizards | Iszi Lawrence and David Hone | |
| 78 | 6 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 79 | 6 |  | Open Country | BBC Radio 4 | |
| 80 | 98 |  | TED Talks Science and Medicine | TED | |
| 81 | 13 |  | Great Mysteries of Physics | The Conversation | |
| 82 | 6 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 83 | 14 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 84 | 20 |  | Expanded Perspectives | Expanded Perspectives | |
| 85 | 18 |  | The Science of Everything Podcast | James Fodor | |
| 86 | 12 |  | UAP Unidentified Alien Podcast | Gamut Podcast Network | |
| 87 | — |  | The Episodic Table of Elements | T. R. Appleton | |
| 88 | 5 |  | Accidental Gods | Accidental Gods | |
| 89 | 21 |  | Geology Bites | Oliver Strimpel | |
| 90 | 5 |  | A Life More Wild | Canopy & Stars | |
| 91 | 14 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 92 | 34 |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 93 | 5 |  | Wild Tales | Nature Podcast | National Trust | |
| 94 | 13 |  | The Quanta Podcast | Quanta Magazine | |
| 95 | 6 |  | Wild Lives | Our Media | |
| 96 | 18 |  | Skeptics with a K | Skeptic Media Limited | |
| 97 | 7 |  | Dr Giles Yeo Chews the Fat | Orion Publishing Ltd. | |
| 98 | 47 |  | Shirtloads of Science | Dr Karl Kruszelnicki | |
| 99 | 52 |  | Richard Wiseman's On Your Mind | Podimo & TellTale | |
| 100 | 65 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
