| 1 | — |  | The Rest Is Science | Goalhanger | |
| 2 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 3 | — |  | Curious Cases | BBC Radio 4 | |
| 3 | — | S | Show Me the Science with Luke O'Neill | Newstalk | |
| 4 | 6 |  | Radiolab | WNYC Studios | |
| 4 | — | B | Boring History for Sleep | Velvet | |
| 6 | 1 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 6 | 13 |  | More or Less | BBC Radio 4 | |
| 6 | — |  | Science Vs | Spotify Studios | |
| 7 | 3 |  | Science Weekly | The Guardian | |
| 8 | — |  | Babbage from The Economist | The Economist | |
| 8 | 2 | M | Mooney Goes Wild | RTÉ Radio 1 | |
| 9 | 2 |  | BBC Inside Science | BBC Radio 4 | |
| 10 | — |  | A Question of Science | The Francis Crick Institute | |
| 11 | 2 | F | Futureproof with Jonathan McCrea | Newstalk | |
| 11 | 3 |  | Ologies with Alie Ward | Alie Ward | |
| 11 | 3 |  | The world, the universe and us | New Scientist | |
| 12 | 23 | C | CountryWide | RTÉ Radio 1 | |
| 12 | 5 |  | Unexplainable | Vox | |
| 14 | — |  | Google DeepMind: The Podcast | Hannah Fry | |
| 15 | 53 |  | Discovery | BBC World Service | |
| 15 | 11 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 16 | 2 |  | Making Sense with Sam Harris | Sam Harris | |
| 17 | — |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 18 | 21 |  | TED Talks Science and Medicine | TED | |
| 18 | — |  | Mysterious Radio: Paranormal, UFO and Lore Interviews | Podcast Audio House | |
| 19 | — |  | Operation Night Cat | New Hampshire Public Radio | |
| 20 | — | T | This Natural Life | BBC Radio 4 | |
| 20 | 5 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 20 | 5 | J | Jung in the World | Patricia Martin | |
| 21 | — |  | You Are Not So Smart | You Are Not So Smart | |
| 21 | 1 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 22 | — |  | The Naked Scientists Podcast | The Naked Scientists | |
| 22 | 5 |  | CrowdScience | BBC World Service | |
| 23 | 6 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 23 | — | C | Conservation and Science | Tommy's Outdoors | |
| 24 | 3 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 24 | 46 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 24 | — |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 25 | 2 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 25 | 8 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 26 | 39 |  | WEAPONIZED with Jeremy Corbell & George Knapp | Jeremy Corbell and George Knapp | |
| 26 | 164 |  | The Couples Therapist Couch | Shane Birkel | |
| 26 | — |  | Ciência Suja | Ciência Suja | |
| 27 | 4 |  | That UFO Podcast | That UFO Podcast | |
| 27 | — |  | The End Of The World with Josh Clark | iHeartPodcasts | |
| 28 | — | T | Tweet of the Day | BBC Radio 4 | |
| 29 | — | M | MDS Podcast | International Parkinson and Movement Disorder Society | |
| 30 | 17 |  | The Psychology Podcast | iHeartPodcasts | |
| 30 | — | N | New Books in National Security | Marshall Poe | |
| 31 | 49 |  | Mysterious Universe | 8th Kind | |
| 31 | 61 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 31 | — | N | Naruhodo | B9, Naruhodo, Ken Fujioka, Altay de Souza | |
| 32 | — | H | HYPERLAND | David Malone and Ian Stroud | |
| 32 | 8 |  | The Plodcast | Our Media | |
| 33 | — | R | RadioGraphics Podcast | RSNA | Radiological Society of North America (RSNA) | |
| 34 | — | T | The Function Room | GoLoud | |
| 35 | 5 |  | Astrum Space | Astrum | |
| 35 | 38 |  | Podcast UFO | Martin Willis | |
| 35 | — |  | DNA Today: A Genetics Podcast | Kira Dineen, Gene Pool Media | |
| 36 | 7 |  | The Life Scientific | BBC Radio 4 | |
| 36 | — | U | Upland Voices Podcast - ACRES Donegal | Aileen Collery | |
| 37 | 51 |  | All In The Mind | ABC | |
| 37 | — | D | Die Money Profiler | Daniel Butscher & Eske Bockelmann | |
| 37 | 16 | S | Standing Up Strong | The Nancy & David Wolf Holocaust & Humanity Center | |
| 38 | 20 | N | Naturefile | RTÉ lyric fm | |
| 38 | — |  | Grow Like Wild! | The nerdiest gossip column for ecological gardeners. | |
| 39 | — | I | It Happened To Me: A Rare Disease and Medical Challenges Podcast | Cathy Gildenhorn, Beth Glassman, and Kira Dineen (DNA Today) | |
| 40 | — | T | The Amp Hour Electronics Podcast | The Amp Hour (Chris Gammell and David L Jones) | |
| 42 | — | S | Shots of Science Vs | Spotify Studios | |
| 43 | 48 |  | Unexpected Elements | BBC World Service | |
| 44 | 14 | ![Cosmosis [Formerly The UFO Rabbit Hole]](https://is1-ssl.mzstatic.com/image/thumb/Podcasts211/v4/6e/50/4f/6e504f3a-5967-0f9a-1858-77a5f070b7d4/mza_10360255510263335732.jpeg/100x100bb.jpg) | Cosmosis [Formerly The UFO Rabbit Hole] | Kelly Chase & Jay Christopher King | |
| 45 | — | 2 | 28 Ways to Save the World | Newstalk | |
| 45 | 10 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 45 | 62 |  | UFO Chronicles Podcast | Nik Hunter | |
| 46 | 10 |  | Universe Today Podcast | Fraser Cain | |
| 48 | — | U | UFO? UAP? WTF? — a UFO podcast | Rogue Planet | |
| 50 | 14 |  | Science Friday | Science Friday and WNYC Studios | |
| 51 | 4 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 59 | 27 |  | Stories From Space | ITSPmagazine, Matthew S Williams | |
| 60 | 12 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 60 | — |  | Chemistry For Your Life | Melissa and Jam, Bleav | |
| 61 | 1 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 62 | 5 |  | Rare Earth | BBC Radio 4 | |
| 62 | 25 |  | Drilled | Pushkin Industries | |
| 64 | 17 |  | Space Nuts: Astronomy Insights & Cosmic Discoveries | Professor Fred Watson and Andrew Dunkley | |
| 64 | 4 | I | In Your Nature | By BirdWatch Ireland | |
| 64 | — | M | Making Science with Tom Whipple | The Times | |
| 65 | 33 |  | Overheard at National Geographic | National Geographic | |
| 67 | 41 |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 68 | 41 |  | MonsterTalk | Blake Smith | |
| 69 | 28 | C | Chris Skinner's Countryside Podcasts | High Ash Farm | |
| 69 | — |  | Physics World Weekly Podcast | Physics World | |
| 70 | 7 |  | UAP Unidentified Alien Podcast | Gamut Podcast Network | |
| 71 | 37 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 71 | 3 |  | A Life More Wild | Canopy & Stars | |
| 72 | 21 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 72 | 39 | H | Hiçbir Şey Tesadüf Değil | Podbee Media | |
| 73 | 38 | T | The Cancer Trials Ireland Podcast | Cancer Trials Ireland | |
| 74 | — |  | Why This Universe? | Dan Hooper, Shalma Wegsman | |
