| 1 | — |  | The Rest Is Science | Goalhanger | |
| 2 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 3 | — |  | Radiolab | WNYC Studios | |
| 3 | 1 |  | Ologies with Alie Ward | Alie Ward | |
| 5 | 1 |  | Curious Cases | BBC Radio 4 | |
| 5 | 4 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 6 | 1 |  | More or Less | BBC Radio 4 | |
| 6 | — |  | All In The Mind | ABC | |
| 7 | — |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 8 | — |  | Science Vs | Spotify Studios | |
| 8 | 1 |  | Science Weekly | The Guardian | |
| 9 | 3 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 12 | — |  | The world, the universe and us | New Scientist | |
| 12 | 5 |  | Making Sense with Sam Harris | Sam Harris | |
| 13 | — |  | Discovery | BBC World Service | |
| 13 | 28 |  | Unexplainable | Vox | |
| 13 | 2 |  | Operation Night Cat | New Hampshire Public Radio | |
| 15 | — |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 16 | 3 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 16 | — |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 16 | 5 |  | BBC Inside Science | BBC Radio 4 | |
| 17 | 2 | B | Boring History for Sleep | Velvet | |
| 18 | 2 |  | The Michael Shermer Show | Michael Shermer | |
| 20 | 3 |  | Babbage from The Economist | The Economist | |
| 20 | 6 |  | CrowdScience | BBC World Service | |
| 21 | — |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 21 | 15 | O | Our Changing World | RNZ | |
| 22 | — |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 23 | 4 |  | The Life Scientific | BBC Radio 4 | |
| 23 | 12 |  | Wild Sounds: Kākāpō Files II | RNZ | |
| 23 | 1 |  | Ingenious: how research transforms our world | UoAMediaTeam | |
| 24 | 2 |  | Unexpected Elements | BBC World Service | |
| 25 | 7 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 25 | 9 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 27 | 8 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 28 | — |  | Astrum Space | Astrum | |
| 30 | 2 |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 31 | — |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 31 | 24 | T | The Rest is Climate Podcast | Nick Simpson | |
| 32 | 5 | E | Elemental | RNZ | |
| 32 | 39 | K | Kākāpō Files II | RNZ | |
| 33 | 6 |  | Universe Today Podcast | Fraser Cain | |
| 34 | 25 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 34 | 54 |  | Your Brain On | Drs. Ayesha and Dean Sherzai | |
| 34 | 3 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 34 | 74 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 34 | — | D | Deep Breaths: Updates from CHEST | ReachMD | |
| 35 | 4 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 35 | 11 |  | Blurry Creatures | Blurry Creatures | |
| 36 | 8 |  | A Question of Science | The Francis Crick Institute | |
| 37 | 46 |  | The Psychology Podcast | iHeartPodcasts | |
| 38 | 7 |  | Nature Podcast | Springer Nature Limited | |
| 39 | 36 | N | New Scientist Weekly | New Scientist | |
| 40 | 14 |  | The Science Show | ABC | |
| 40 | 50 |  | Ask a Spaceman! | Paul M. Sutter | |
| 42 | — |  | Professor Brian Cox Live Q and A Podcast | The Cosmic Shambles Network | |
| 42 | 13 |  | The Origins Podcast with Lawrence Krauss | Lawrence M. Krauss | |
| 43 | 6 |  | You Are Not So Smart | You Are Not So Smart | |
| 43 | 20 |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 44 | 40 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 44 | — |  | Razib Khan's Unsupervised Learning | Razib Khan | |
| 44 | 50 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 44 | — |  | Overheard at National Geographic | National Geographic | |
| 45 | — |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 45 | 2 | W | What The Duck?! | ABC | |
| 46 | 2 |  | Scotland Outdoors | BBC Radio Scotland | |
| 46 | 16 | E | EcoFarm Aotearoa | Ewan Campbell with co-host Stephen Brunton | |
| 46 | — |  | The Threshold | Foreign Policy | |
| 47 | — |  | PlanetGeo: The Geology Podcast | Chris and Jesse | |
| 48 | 3 |  | WEAPONIZED with Jeremy Corbell & George Knapp | Jeremy Corbell and George Knapp | |
| 48 | 37 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 49 | 119 |  | Bedrock: Earth's Earliest History | Dylan Wilmeth | |
| 50 | — | S | Spooky Science Sisters | Evergreen Podcasts | Killer Podcasts | |
| 50 | 7 |  | The History of Chemistry | Steve Cohen | |
| 52 | — | T | The Force of Nature Podcast | Conan Moynihan | |
| 52 | 8 | W | Wild Lives | Our Media | |
| 52 | 44 |  | The Science of Birds | Ivan Phillipsen | |
| 53 | 15 | A | All Things Unexplained | Dr. Tim Mounce | |
| 53 | — |  | Planet Visionaries – SEASON 5 | A podcast in partnership with The Rolex Perpetual Planet Initiative | |
| 54 | — | T | The Aspiring Psychologist Podcast | Dr Marianne Trent | |
| 54 | 7 | I | Into The Paranormal, Podcast With Tony Brueski | Real Story Media | |
| 55 | — |  | This Week in Virology | Vincent Racaniello | |
| 55 | 5 |  | This Week in Cardiology | Medscape | |
| 55 | 78 |  | Into the Impossible With Brian Keating | Big Bang Productions Inc. | |
| 56 | — |  | 淇葩人 ChiPodRant | 阿淇博士 Dr. Achi | |
| 57 | 11 |  | Altered States | PRX | |
| 58 | — |  | Why Do We Do That? | BBC Radio 4 | |
| 59 | 12 | T | The Curiosity Vault | University of Birmingham | |
| 60 | 21 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 61 | 4 |  | Speed & Scale | TED | |
| 62 | 118 |  | Skeptoid | Brian Dunning | |
| 62 | 9 | T | The Physio Matters Podcast | Jack Chew | |
| 63 | — |  | Robinson's Podcast | Robinson Erhardt | |
| 63 | 31 | L | LabMates: Beyond the Bench Podcast | Maddie White | |
| 64 | 9 |  | Head Shepherd | Mark Ferguson | |
| 65 | 3 |  | The Answer Is Transaction Costs | Michael Munger | |
| 66 | 14 | O | Open Country | BBC Radio 4 | |
| 66 | 23 |  | Golden State Naturalist | Michelle Fullner | |
| 67 | 1 |  | Science Friday | Science Friday and WNYC Studios | |
| 67 | 21 |  | Curiosity Theory | Dr. Dakotah Tyler & Justin Shaifer | |
