| 1 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 2 | 1 |  | Curious Cases | BBC Radio 4 | |
| 3 | 1 |  | Radiolab | WNYC Studios | |
| 4 | 30 |  | More or Less | BBC Radio 4 | |
| 5 | 3 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 6 | 1 |  | Science Weekly | The Guardian | |
| 7 | 2 |  | Making Sense with Sam Harris | Sam Harris | |
| 8 | 83 |  | CrowdScience | BBC World Service | |
| 9 | 2 |  | Ologies with Alie Ward | Alie Ward | |
| 10 | 2 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 11 | — |  | Discovery | BBC World Service | |
| 12 | 2 |  | All In The Mind | ABC | |
| 13 | 5 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 14 | 1 |  | Alive Again | iHeartPodcasts | |
| 15 | 9 |  | Science Vs | Spotify Studios | |
| 16 | — |  | Unexpected Elements | BBC World Service | |
| 17 | 19 | B | Boring History for Sleep | Velvet | |
| 18 | 7 |  | The world, the universe and us | New Scientist | |
| 19 | 41 | G | Goodfellow Unit | The Goodfellow Unit (University of Auckland) | |
| 20 | 10 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 21 | 4 |  | Science In Action | BBC World Service | |
| 22 | 7 |  | BBC Inside Science | BBC Radio 4 | |
| 23 | 9 |  | Unexplainable | Vox | |
| 24 | 174 |  | Planetary Radio: Space Exploration, Astronomy and Science | The Planetary Society | |
| 25 | 71 |  | Physics World Weekly Podcast | Physics World | |
| 26 | 90 |  | The Nature Of with Willow Defebaugh | Atmos | |
| 27 | 29 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 28 | 5 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 29 | 117 |  | Slow Radio | BBC Radio 3 | |
| 30 | 4 |  | The Science Show | ABC | |
| 31 | — |  | Bite Back with Abbey Sharp | Abbey Sharp / Frequency Podcast Network | |
| 32 | — |  | Pediatric Research Podcast | Nature Publishing Group | |
| 33 | 18 |  | The Life Scientific | BBC Radio 4 | |
| 34 | 124 |  | Proxy with Yowei Shaw | Y3 Productions | |
| 35 | 137 |  | Overheard at National Geographic | National Geographic | |
| 36 | 127 |  | EverydaySpy Podcast | Andrew Bustamante | |
| 37 | 44 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 38 | 17 | O | Our Changing World | RNZ | |
| 39 | — |  | The Archaeology Show | Archaeology Podcast Network | |
| 40 | — |  | Chemistry For Your Life | Melissa and Jam, Bleav | |
| 41 | — | P | Paws & Reward Podcast | Marissa Martino, CDBC, CTC | |
| 42 | — |  | The Making of KOLs: The New Chemist Podcast’s Global Journey in Science, Pharma, and Education | Mr. David Joshua Ferguson, RSci MRSB MRSC | |
| 43 | — | T | The Periodic Table | Brandon Hanna | |
| 44 | 20 |  | Universe Today Podcast | Fraser Cain | |
| 45 | 27 |  | In Defense of Plants Podcast | In Defense of Plants | |
| 46 | 7 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 47 | 145 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 48 | 20 |  | Mysterious Radio: Paranormal, UFO and Lore Interviews | Podcast Audio House | |
| 49 | 30 | D | DOC Sounds of Science Podcast | Department of Conservation | |
| 50 | 23 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 51 | 31 |  | Wild Sounds: Kākāpō Files II | RNZ | |
| 52 | 30 |  | Choiceology with Katy Milkman | Charles Schwab | |
| 53 | 17 |  | Dr Karl Podcast | triplej | |
| 54 | 11 |  | What Remains | WRAL News | Raleigh, North Carolina | |
| 55 | 115 | C | Costing the Earth | BBC Radio 4 | |
| 56 | 15 |  | That's Just Wild | Fresh Air | |
| 57 | 13 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 58 | — |  | The Wild with Chris Morgan | KUOW News and Information | |
| 59 | 98 |  | Space Nuts: Astronomy Insights & Cosmic Discoveries | Professor Fred Watson and Andrew Dunkley | |
| 60 | 31 |  | The Common Descent Podcast | Common Descent | |
| 61 | 28 |  | Head Shepherd | Mark Ferguson | |
| 62 | 76 |  | Regenerative Agriculture Podcast | John Kempf | |
| 63 | 31 | F | Feed for Thought | Pioneer Brand Products NZ | |
| 64 | 15 |  | The Psychology Podcast | iHeartPodcasts | |
| 65 | 25 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 66 | 4 |  | Invisibilia | NPR | |
| 67 | 4 |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 68 | 14 |  | The Quanta Podcast | Quanta Magazine | |
| 69 | — |  | Unbiased Science | @unbiasedscipod | |
| 70 | 35 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 71 | 21 |  | The Orthobullets Podcast | Orthobullets | |
| 72 | 35 |  | Manifold | Steve Hsu | |
| 73 | — |  | Look Both Ways with David & Wes | Wes Marshall | |
| 74 | 36 |  | Templeton Ideas Podcast | John Templeton Foundation | |
| 75 | 36 |  | The House of Pod | Kaveh MD | |
| 76 | 34 | C | Coral Currents Podcast | Shae Wilkinson | |
| 77 | 20 |  | Science Magazine Podcast | Science Magazine | |
| 78 | — |  | Constant Wonder | BYUradio | |
| 79 | 33 | V | Voice of Tangaroa | RNZ | |
| 80 | 35 |  | The Couples Therapist Couch | Shane Birkel | |
| 81 | 34 | B | Branch Out | Botanic Gardens of Sydney | |
| 82 | 34 | P | Psychology | Yale School of Medicine | |
| 83 | — |  | Beyond the Ice | British Antarctic Survey | |
| 84 | — | L | La Suite dans les idées | France Culture | |
| 85 | 36 | O | Orchard Outlook | Orchard Outlook | |
| 86 | 34 |  | Podcast UFO | Martin Willis | |
| 87 | 26 |  | Science Friday | Science Friday and WNYC Studios | |
| 88 | 33 | B | Boring Science For Sleep | Sleepless Scientist | |
| 89 | 46 |  | The Science of Birds | Ivan Phillipsen | |
| 90 | 6 |  | Astrum Space | Astrum | |
| 91 | 22 | T | Tom Nelson | Thomas Nelson | |
| 92 | 88 |  | Mysterious Universe | 8th Kind | |
| 93 | 13 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 94 | 28 |  | Lingthusiasm - A podcast that's enthusiastic about linguistics | Gretchen McCulloch and Lauren Gawne | |
| 95 | 34 |  | How We're Wired | The Bertarelli Foundation | |
| 96 | 66 |  | Scotland Outdoors | BBC Radio Scotland | |
| 97 | 2 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 98 | 40 |  | ScienceStuff | iHeartPodcasts | |
| 99 | 40 |  | Drilled | Pushkin Industries | |
| 100 | 14 |  | 5 Live Science Podcast | BBC Radio 5 Live | |
