| 1 | — |  | Kapphlaupið til tunglsins | Sævar Helgi Bragason | |
| 1 | — |  | Lost Women of Science | Lost Women of Science | |
| 1 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 2 | 1 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 3 | — |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 3 | — |  | EverydaySpy Podcast | Andrew Bustamante | |
| 5 | 4 |  | Hematologic Oncology Update | Dr. Neil Love | |
| 6 | 26 |  | Podcast UFO | Martin Willis | |
| 6 | 6 | V | Von Ráðgjöf - Lausnin Hlaðvarp | Von ráðgjöf - Lausnin hlaðvarp | |
| 6 | — |  | Science Weekly | The Guardian | |
| 6 | 2 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 7 | 4 | P | Post Truth be told | RECLAIM | |
| 7 | — |  | Google DeepMind: The Podcast | Hannah Fry | |
| 7 | 14 |  | More or Less | BBC Radio 4 | |
| 8 | 23 |  | Science Vs | Spotify Studios | |
| 8 | 4 | B | Boring History for Sleep | Velvet | |
| 9 | 4 |  | Short Wave | NPR | |
| 9 | 1 |  | Radiolab | WNYC Studios | |
| 10 | 6 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 11 | 7 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 12 | 1 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 12 | 2 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 12 | 5 |  | UAP Unidentified Alien Podcast | Gamut Podcast Network | |
| 13 | 7 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 15 | 4 |  | Making Sense with Sam Harris | Sam Harris | |
| 16 | 4 |  | Unexplainable | Vox | |
| 18 | — |  | Ologies with Alie Ward | Alie Ward | |
| 18 | 27 |  | Science Friday | Science Friday and WNYC Studios | |
| 19 | 172 |  | The Micah Hanks Program | Micah Hanks | |
| 19 | 6 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 20 | 2 |  | This Week in Virology | Vincent Racaniello | |
| 22 | 5 |  | Nature Podcast | Springer Nature Limited | |
| 23 | 12 |  | War and Peace – Book One, Chapter I | meisamhoushyar | |
| 25 | 12 |  | Robinson's Podcast | Robinson Erhardt | |
| 26 | 36 |  | Skeptics with a K | Skeptic Media Limited | |
| 28 | 14 |  | Real Ghost Stories Online | Real Ghost Stories Online | Paranormal, Supernatural & Horror Radio | |
| 28 | 49 |  | Clearer Thinking with Spencer Greenberg | Spencer Greenberg | |
| 29 | 3 |  | Sidenote by AsapSCIENCE | AsapSCIENCE | |
| 29 | 82 |  | Planetary Radio: Space Exploration, Astronomy and Science | The Planetary Society | |
| 30 | 7 |  | A Life More Wild | Canopy & Stars | |
| 30 | 3 | W | Walkabout the Galaxy | Joshua Colwell, Adrienne Dove, and James Cooney | |
| 30 | — | F | Forum | Nature Biotechnology | |
| 30 | 76 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 30 | 3 | N | New Books in Environmental Studies | Marshall Poe | |
| 31 | 123 | N | Nauka To Lubię | Tomasz Rożek | |
| 32 | — |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 32 | — |  | Scotland Outdoors | BBC Radio Scotland | |
| 32 | 12 | A | All About Grants at NIH | Office of Extramural Research | |
| 33 | 12 |  | Life List: A Birding Podcast | George Armistead, Alvaro Jaramillo, and Mollee Brown | |
| 35 | 78 |  | The Psychology Podcast | iHeartPodcasts | |
| 35 | 12 |  | Skeptoid | Brian Dunning | |
| 36 | 121 |  | This Week in Cardiology | Medscape | |
| 37 | 1 |  | MCHD Paramedic Podcast | Montgomery County Hospital District | |
| 37 | 63 |  | Science In Action | BBC World Service | |
| 37 | 6 |  | New Books in Critical Theory | Marshall Poe | |
| 38 | 11 |  | The Orthobullets Podcast | Orthobullets | |
| 39 | 32 |  | Space Nuts: Astronomy Insights & Cosmic Discoveries | Professor Fred Watson and Andrew Dunkley | |
| 39 | 1 | N | Naked Scientists, In Short Special Editions Podcast | The Naked Scientists | |
| 39 | 99 |  | DNA Today: A Genetics Podcast | Kira Dineen, Gene Pool Media | |
| 40 | — |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 40 | 25 |  | You Are Not So Smart | You Are Not So Smart | |
| 40 | 13 |  | The Plodcast | Our Media | |
| 41 | 154 |  | Videnskabeligt Udfordret | Mark Lyng, Flemming Damgaard, Nikolaj V. Hansen | |
| 41 | 19 |  | Paranormal Mysteries | Nic Ryan | Paranormal Mysteries Podcast | |
| 42 | 13 | A | Amours de nos jours | Mouv' | |
| 43 | 17 |  | Universe Today Podcast | Fraser Cain | |
| 44 | 74 |  | That's Absurd Please Elaborate | Trace Elements Media | |
| 44 | 17 | L | Läkarna podcast | Läkarna | |
| 45 | 4 | T | TheoryLab | American Cancer Society | |
| 45 | 82 |  | The Quanta Podcast | Quanta Magazine | |
| 46 | — |  | Better Brain Fitness (a Brainjo Production) | Josh Turknett, MD | |
| 47 | 2 |  | Curiosity Weekly | Discovery | |
| 48 | 13 |  | The Couples Therapist Couch | Shane Birkel | |
| 49 | 5 |  | Unexpected Elements | BBC World Service | |
| 51 | 14 |  | Songbirding: A Birding-by-ear Podcast | Rob Porter | |
| 53 | 24 |  | CrowdScience | BBC World Service | |
| 54 | 15 |  | Speed & Scale | TED | |
| 55 | 23 |  | Paranormal Portal | Brent Thomas | |
| 56 | 11 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 57 | 22 |  | Dope Labs | iHeartPodcasts | |
| 59 | — | B | Behind Behavior | Behind Behavior | |
| 59 | 1 | 2 | 24/7 | Beggi Ólafs | |
| 59 | 23 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 60 | 17 |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 61 | 22 |  | Drilled | Pushkin Industries | |
| 62 | 20 |  | Cool Worlds Podcast | coolworldslab | |
| 63 | 14 |  | Paradigmepodden | Terje Toftenes | |
| 64 | 19 | L | Law at the End of the World | Elizabeth Macpherson and Cristy Clark | |
| 65 | 18 |  | The Optispan Podcast with Matt Kaeberlein | Optispan | |
| 66 | 2 |  | The Medbullets Step 2 & 3 Podcast | Medbullets | |
| 67 | 19 |  | Bigfoot Society | Jeremiah Byron | |
| 68 | 15 |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 69 | 19 |  | My Bigfoot Sighting | Vic Cundiff | |
| 70 | 19 |  | All In The Mind | ABC | |
| 71 | 19 |  | Speaking of Psychology | American Psychological Association | |
| 72 | 13 | T | The Metabolomist podcast | biocrates life sciences | |
| 73 | 13 | T | The eLife Podcast | Dr Chris Smith | |
| 74 | 20 | B | Brain Matters (Audio) | UCTV | |
| 75 | 20 |  | Clinician's Brief: The Podcast | Clinician's Brief | |
| 76 | 19 |  | Curious Cases | BBC Radio 4 | |
