| 1 | — |  | The Rest Is Science | Goalhanger | |
| 2 | 5 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 2 | — |  | More or Less | BBC Radio 4 | |
| 3 | 1 |  | Radiolab | WNYC Studios | |
| 3 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 5 | 1 |  | Ologies with Alie Ward | Alie Ward | |
| 5 | 4 |  | Science Weekly | The Guardian | |
| 5 | — |  | Curious Cases | BBC Radio 4 | |
| 8 | — |  | All In The Mind | ABC | |
| 8 | 2 | B | Boring History for Sleep | Velvet | |
| 9 | 2 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 10 | 11 |  | Discovery | BBC World Service | |
| 10 | 8 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 11 | 3 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 12 | — |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 13 | 6 |  | Unexplainable | Vox | |
| 13 | 7 |  | Science Vs | Spotify Studios | |
| 14 | 1 |  | BBC Inside Science | BBC Radio 4 | |
| 16 | — |  | Making Sense with Sam Harris | Sam Harris | |
| 17 | 6 | K | Kākāpō Files II | RNZ | |
| 17 | — |  | CrowdScience | BBC World Service | |
| 20 | 2 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 22 | 8 | O | Our Changing World | RNZ | |
| 22 | 3 |  | Wild Sounds: Kākāpō Files II | RNZ | |
| 23 | — |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 24 | 8 |  | Short Wave | NPR | |
| 24 | — |  | Unexpected Elements | BBC World Service | |
| 25 | 1 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 26 | 9 |  | The Michael Shermer Show | Michael Shermer | |
| 27 | 99 |  | Overheard at National Geographic | National Geographic | |
| 27 | — |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 27 | 2 |  | The world, the universe and us | New Scientist | |
| 28 | — |  | Origin Stories | The Leakey Foundation | |
| 29 | 5 |  | Universe Today Podcast | Fraser Cain | |
| 31 | 5 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 31 | — |  | Astrum Space | Astrum | |
| 32 | 1 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 32 | 74 |  | The Science of Birds | Ivan Phillipsen | |
| 33 | 4 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 35 | 6 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 37 | 1 |  | Operation Night Cat | New Hampshire Public Radio | |
| 37 | 154 |  | The Plodcast | Our Media | |
| 38 | 13 |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 38 | — |  | The Science Show | ABC | |
| 39 | — |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 39 | 3 |  | Planet Em | Emily McDonald | |
| 41 | 28 |  | Heartbreak: A Personal and Scientific Journey | Pushkin Industries | |
| 41 | 1 |  | Ingenious: how research transforms our world | UoAMediaTeam | |
| 41 | 9 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 42 | — |  | How We're Wired | The Bertarelli Foundation | |
| 42 | 21 |  | Planetary Radio: Space Exploration, Astronomy and Science | The Planetary Society | |
| 43 | 81 |  | Astronomy Cast | Fraser Cain and Dr. Pamela Gay | |
| 44 | — |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 45 | 106 | B | Big Thinking Podcast | Federation for the Humanities and Social Sciences | |
| 45 | 8 |  | Space Nuts: Astronomy Insights & Cosmic Discoveries | Professor Fred Watson and Andrew Dunkley | |
| 46 | 37 | T | The Counselling Psychology Lens | Mary | |
| 46 | — |  | You Are Not So Smart | You Are Not So Smart | |
| 46 | 9 |  | Babbage from The Economist | The Economist | |
| 46 | 47 |  | The Life Scientific | BBC Radio 4 | |
| 47 | 132 | C | Clinically Thinking | Clinically Thinking | |
| 47 | 20 |  | The Marginal Revolution Podcast | Mercatus Center at George Mason University | |
| 47 | 136 |  | Skeptoid | Brian Dunning | |
| 47 | — |  | Scotland Outdoors | BBC Radio Scotland | |
| 48 | — |  | EverydaySpy Podcast | Andrew Bustamante | |
| 48 | — |  | The Quanta Podcast | Quanta Magazine | |
| 48 | 6 |  | Let's Learn Everything! | Maximum Fun | |
| 48 | — | T | The Alcohol 'Problem' Podcast | James Morris | |
| 49 | — |  | In Defense of Plants Podcast | In Defense of Plants | |
| 50 | 97 | D | DOC Sounds of Science Podcast | Department of Conservation | |
| 50 | 2 |  | Dr Karl Podcast | triplej | |
| 50 | 14 |  | Science Friday | Science Friday and WNYC Studios | |
| 50 | 51 |  | Head Shepherd | Mark Ferguson | |
| 53 | 95 |  | Paranormal Mysteries | Nic Ryan | Paranormal Mysteries Podcast | |
| 54 | — | M | Med School Phys | Med School Phys | |
| 55 | — |  | The Parkinson's Podcast | Davis Phinney Foundation | |
| 56 | — | T | Two Psychologists Four Beers | Yoel Inbar, Michael Inzlicht, and Alexa Tullett | |
| 57 | — |  | Choiceology with Katy Milkman | Charles Schwab | |
| 58 | — |  | Overshoot: Navigating a world beyond 1.5°C | Planet B Productions | |
| 58 | 18 |  | Bigfoot Society | Jeremiah Byron | |
| 59 | — |  | The Climate Question | BBC World Service | |
| 59 | 2 |  | That UFO Podcast | That UFO Podcast | |
| 59 | 82 | T | The Force of Nature Podcast | Conan Moynihan | |
| 60 | 57 | W | What The Duck?! | ABC | |
| 60 | — |  | Stanford Psychology Podcast | Stanford Psychology | |
| 61 | 86 | E | EcoFarm Aotearoa | Ewan Campbell with co-host Stephen Brunton | |
| 62 | 9 |  | Clinician's Brief: The Podcast | Clinician's Brief | |
| 62 | — |  | Science In Action | BBC World Service | |
| 64 | — | N | Net Earth: The Environmental Security Podcast | Royal United Services Institute | |
| 64 | 32 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 65 | — |  | Diet Doctor Podcast | dietdoctorpodcast | |
| 65 | 62 |  | Safe to Drink | NHPR | |
| 66 | — | A | a scope ~リベラルアーツで世界を視る目が変わる~ | NewsPicks | |
| 66 | 23 | O | Open Country | BBC Radio 4 | |
| 66 | 64 | T | The Science Of… | RNZ | |
| 68 | — |  | Bite Back with Abbey Sharp | Abbey Sharp / Frequency Podcast Network | |
| 68 | 43 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 69 | — | B | Believe: Paranormal & UFO Podcast | Kade Moir | |
| 69 | — |  | The Joy of x | Steven Strogatz and Quanta Magazine | |
| 70 | 7 |  | Blurry Creatures | Blurry Creatures | |
| 70 | 97 |  | UFO Chronicles Podcast | Nik Hunter | |
