| 1 | 2 |  | Curious Cases | BBC Radio 4 | |
| 2 | 6 |  | Making Sense with Sam Harris | Sam Harris | |
| 3 | 3 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 4 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 5 | 4 |  | Ologies with Alie Ward | Alie Ward | |
| 6 | 1 |  | Science Vs | Spotify Studios | |
| 7 | 5 |  | The world, the universe and us | New Scientist | |
| 8 | 1 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 9 | 12 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 10 | 31 |  | Alive Again | iHeartPodcasts | |
| 11 | 1 |  | Radiolab | WNYC Studios | |
| 12 | 3 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 13 | 4 | D | DOC Sounds of Science Podcast | Department of Conservation | |
| 14 | 1 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 15 | 29 |  | CrowdScience | BBC World Service | |
| 16 | 15 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 17 | 3 |  | Science Weekly | The Guardian | |
| 18 | 4 |  | More or Less | BBC Radio 4 | |
| 19 | 7 |  | The Life Scientific | BBC Radio 4 | |
| 20 | 6 |  | Your Brain On | Drs. Ayesha and Dean Sherzai | |
| 21 | 12 |  | Overheard at National Geographic | National Geographic | |
| 22 | 4 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 23 | 7 |  | Mythfits | Pionaire Podcasting | |
| 24 | — |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 25 | 114 |  | The Origins Podcast with Lawrence Krauss | Lawrence M. Krauss | |
| 26 | 9 |  | All In The Mind | ABC | |
| 27 | 21 |  | Speaking of Psychology | American Psychological Association | |
| 28 | 145 |  | The Quanta Podcast | Quanta Magazine | |
| 29 | 154 |  | Into the Impossible With Brian Keating | Big Bang Productions Inc. | |
| 30 | 10 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 31 | — |  | 洪晃|晃然大悟 | 洪晃|晃然大悟 | |
| 32 | 13 |  | The Psychology Podcast | iHeartPodcasts | |
| 33 | 23 |  | This Week in Space (Audio) | TWiT | |
| 34 | 23 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 35 | 10 |  | BBC Inside Science | BBC Radio 4 | |
| 36 | 9 | O | Our Changing World | RNZ | |
| 37 | 73 |  | Wild Sounds: Kākāpō Files II | RNZ | |
| 38 | 15 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 39 | 59 |  | Speed & Scale | TED | |
| 40 | 12 |  | Blurry Creatures | Blurry Creatures | |
| 41 | 12 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 42 | 135 |  | Ancient Aliens | PodcastOne | |
| 43 | 123 | S | Shirtloads of Science | Dr Karl Kruszelnicki | |
| 44 | 148 |  | Clearer Thinking with Spencer Greenberg | Spencer Greenberg | |
| 45 | 13 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 46 | 7 | G | Goodfellow Unit | The Goodfellow Unit (University of Auckland) | |
| 47 | — | W | Why? with Emma Kennedy | Podmasters | |
| 48 | 18 |  | Unexplainable | Vox | |
| 49 | — |  | Science Friction | ABC | |
| 50 | 144 |  | Invisibilia | NPR | |
| 51 | — |  | The Rumen Room Podcasts | cwestwood | |
| 52 | — | E | Equine Veterinary Education Podcast | Unknown | |
| 53 | — |  | The Astrophysics Podcast | Paul Duffell | |
| 54 | 20 |  | Public Health is Dead | Public Health is Dead | |
| 55 | — | P | Plan Sea: Ocean Interventions to Address Climate Change | Wil Burns and Anna Madlener | |
| 56 | — | B | Blue Builders | Romain Joly | |
| 57 | — | B | Big Thinking Podcast | Federation for the Humanities and Social Sciences | |
| 58 | 23 | R | RadicalxChange(s) | RadicalxChange Foundation | |
| 59 | — | M | Mises U 2020 | Mises Institute | |
| 60 | — | T | Te Pūtahi | Te Hiku Media | |
| 61 | 25 |  | Multiverse 5D @ M5D | Multiverse 5D Network | |
| 62 | 25 |  | Evolutionary Psychology (the podcast) | Dave Pietraszewski & David Pinsof | |
| 63 | 25 |  | New Books in Critical Theory | Marshall Poe | |
| 64 | 8 |  | Short Wave | NPR | |
| 65 | 25 | B | Because Why?! The Science and Society Pod. | Brianne West | |
| 66 | 21 |  | The Episodic Table of Elements | T. R. Appleton | |
| 67 | 25 |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 68 | 25 |  | Ask a Spaceman! | Paul M. Sutter | |
| 69 | 45 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 70 | 1 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 71 | 25 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 72 | 21 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 73 | 15 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 74 | 27 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 75 | 25 |  | The Horse First: A Veterinary Sport Horse Podcast | Audrey DeClue, DVM | |
| 76 | 27 |  | TED Talks Science and Medicine | TED | |
| 77 | 22 | B | Bon Chien | Dave Putman, Forrest Micke, Josh Moran | |
| 78 | 18 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 79 | 26 |  | Drilled | Pushkin Industries | |
| 80 | 28 |  | Oceans: Life Under Water | Crowd Network | Greenpeace UK | |
| 81 | 24 | T | The Artificial Human | BBC Radio 4 | |
| 82 | 28 | T | The OTA Podcast | OTA Podcast Committee | |
| 83 | 19 |  | Lingthusiasm - A podcast that's enthusiastic about linguistics | Gretchen McCulloch and Lauren Gawne | |
| 84 | 25 |  | The LIUniverse with Dr. Charles Liu | theliuniverse | |
| 85 | 24 |  | Small Steps, Giant Leaps | National Aeronautics and Space Administration (NASA) | |
| 86 | 24 | S | Science Of The Times | Tim Coulson And Syma Khalid | |
| 87 | 18 |  | Science In Action | BBC World Service | |
| 88 | 25 |  | Ingenious: how research transforms our world | UoAMediaTeam | |
| 89 | 24 | E | Everything's Psychology | Paul Davies | |
| 90 | 24 | H | Habitat loss with David Attenborough | Veer Jain | |
| 91 | 24 |  | The After On Podcast | Rob Reid | |
| 92 | 24 |  | The Good News About Cancer | Charles Ryan MD, Alicia Morgans MD MPH | |
| 93 | 23 |  | Houston We Have a Podcast | National Aeronautics and Space Administration (NASA) | |
| 94 | 23 |  | Every Animal Ever | Dr Cesar Puechmarin, Zach Mander | |
| 95 | 21 |  | MinuteEarth | Minute Earth | |
| 96 | 23 |  | ScienceStuff | iHeartPodcasts | |
| 97 | 75 |  | Dr Karl Podcast | triplej | |
| 98 | 23 |  | That UFO Podcast | That UFO Podcast | |
| 99 | 9 |  | The Michael Shermer Show | Michael Shermer | |
| 100 | 4 |  | Rebelliously Curious with Chrissy Newton: UFOs, Science, Culture and Futurism | Chrissy Newton | |
