| 1 | — |  | Instant Genius | Our Media | |
| 2 | 2 |  | Ologies with Alie Ward | Alie Ward | |
| 3 | 6 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 4 | 4 |  | Curious Cases | BBC Radio 4 | |
| 5 | 3 |  | Making Sense with Sam Harris | Sam Harris | |
| 6 | 10 |  | CrowdScience | BBC World Service | |
| 7 | 6 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 8 | 5 |  | Alive Again | iHeartPodcasts | |
| 9 | 3 |  | More or Less | BBC Radio 4 | |
| 10 | 5 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 11 | 4 |  | Radiolab | WNYC Studios | |
| 12 | — |  | The world, the universe and us | New Scientist | |
| 13 | 12 |  | All In The Mind | ABC | |
| 14 | 4 |  | Science Vs | Spotify Studios | |
| 15 | 4 |  | Science Weekly | The Guardian | |
| 16 | 45 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 17 | — |  | BBC Inside Science | BBC Radio 4 | |
| 18 | 4 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 19 | 1 |  | Mythfits | Pionaire Podcasting | |
| 20 | 1 |  | Short Wave | NPR | |
| 21 | 6 | W | What The Duck?! | ABC | |
| 22 | 7 |  | The Science Show | ABC | |
| 23 | 10 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 24 | 6 | O | Our Changing World | RNZ | |
| 25 | 13 |  | Unexpected Elements | BBC World Service | |
| 26 | 30 |  | Science In Action | BBC World Service | |
| 27 | — | T | The Social Work Stories Podcast | The Social Work Stories Team | |
| 28 | 5 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 29 | 12 |  | The Life Scientific | BBC Radio 4 | |
| 30 | 10 |  | Discovery | BBC World Service | |
| 31 | 4 |  | Ask a Spaceman! | Paul M. Sutter | |
| 32 | 13 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 33 | 9 |  | People Helping Nature Podcast | Conservation Amplified | |
| 34 | 23 |  | That's Just Wild | Fresh Air | |
| 35 | 29 |  | Blurry Creatures | Blurry Creatures | |
| 36 | 50 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 37 | 15 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 38 | 42 | W | Why We Do What We Do | Abraham | |
| 39 | 13 |  | The Psychology Podcast | iHeartPodcasts | |
| 40 | 9 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 41 | 81 |  | The Michael Shermer Show | Michael Shermer | |
| 42 | 117 |  | The Best of Coast to Coast AM | iHeartPodcasts and Coast to Coast AM | |
| 43 | — | B | Because Why?! The Science and Society Pod. | Brianne West | |
| 44 | 19 |  | Bedrock: Earth's Earliest History | Dylan Wilmeth | |
| 45 | 82 |  | A Life More Wild | Canopy & Stars | |
| 46 | — |  | Bigfoot and Beyond with Cliff and Bobo | Bigfoot and Beyond LLC | |
| 47 | — |  | Completely Arbortrary | Completely Arbortrary | |
| 48 | 9 |  | The Common Descent Podcast | Common Descent | |
| 49 | — |  | Mind & Matter | Nick Jikomes | |
| 50 | — | B | Believe: Paranormal & UFO Podcast | Kade Moir | |
| 51 | — |  | The Warblers by Birds Canada | Andrea Gress for Birds Canada | |
| 52 | — |  | Your Brain On Climate | Dave Powell | |
| 53 | 7 |  | Astronomy Cast | Fraser Cain and Dr. Pamela Gay | |
| 54 | — |  | Ask MIT Climate | MIT Climate Project | |
| 55 | — |  | Off-Nominal | Jake Robins, Anthony Colangelo | |
| 56 | — |  | New Books in Critical Theory | Marshall Poe | |
| 57 | — | T | The Animal Sensemaker | The Observer | |
| 58 | — |  | Flora Funga Podcast | KK the Plant Biologist with a Thirst for Mycology | |
| 59 | — | K | Ko Papa Ko Rangi: Ahi Kaa | The Spinoff | |
| 60 | — |  | NASW Social Work Talks | National Association of Social Workers (NASW) | |
| 61 | — | S | Social Work Leaders | Social Work Leaders | |
| 62 | — | S | Social Work Sorted with Vicki Shevlin | Vicki Shevlin | |
| 63 | — | P | Podsocs - Social Work Podcasts | Podsocs.com | |
| 64 | — | O | Our Ocean | Seaful | Cal Major | |
| 65 | — | 安 | 安斯如是Anthropod | Chenchen; Zhuo; Gaofeng | |
| 66 | 38 |  | Origin Stories | The Leakey Foundation | |
| 67 | 9 |  | Universe Today Podcast | Fraser Cain | |
| 68 | 34 |  | Your Brain On | Drs. Ayesha and Dean Sherzai | |
| 69 | 37 |  | EverydaySpy Podcast | Andrew Bustamante | |
| 70 | 35 | V | Voice of Tangaroa | RNZ | |
| 71 | 29 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 72 | 36 | R | REthinking Waste - From Recycling to Resources | Leisa de Klerk and Rob Riddell Tigeir | |
| 73 | 36 | E | Everyday Genius | OTS | |
| 74 | 34 |  | Dr Karl Podcast | triplej | |
| 75 | — |  | Brady Heywood Podcast | Sean Brady | |
| 76 | 12 | G | Goodfellow Unit | The Goodfellow Unit (University of Auckland) | |
| 77 | 33 |  | Outside/In | NHPR | |
| 78 | 106 |  | Planetary Radio: Space Exploration, Astronomy and Science | The Planetary Society | |
| 79 | 36 |  | The Quanta Podcast | Quanta Magazine | |
| 80 | 18 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 81 | — |  | Main Engine Cut Off | Anthony Colangelo | |
| 82 | 37 |  | The Weirdest Thing I Learned This Week | Popular Science | |
| 83 | 94 |  | Future Ecologies | Future Ecologies | |
| 84 | 25 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 85 | 13 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 86 | — |  | Planet Pulse Pacific | The Lentil Intervention | |
| 87 | 37 | B | Best of Natural History Radio | BBC Radio 4 | |
| 88 | 12 |  | This Week in Virology | Vincent Racaniello | |
| 89 | — | T | The Weather That Changed Us | ABC | |
| 90 | 43 |  | Ingenious: how research transforms our world | UoAMediaTeam | |
| 91 | — | S | SpaceWeek | Paul Miller & Blake Brown | |
| 92 | — | N | New Scientist Weekly | New Scientist | |
| 93 | 45 | B | Be Reasonable | Merseyside Skeptics Society | |
| 94 | 45 |  | The Behavioral Observations Podcast with Matt Cicoria | Matt Cicoria | |
| 95 | 44 |  | Permaculture P.I.M.P.cast | Permaculture P.I.M.P.cast | |
| 96 | — |  | Raising Health | Andreessen Horowitz, a16z Bio + Health | |
| 97 | 45 | П | правило 34 | Николай | |
| 98 | — | Q | Questions du soir : l'idée | France Culture | |
| 99 | — | 八 | 八爪鱼bioctopus | 小羊不无聊 | |
| 100 | 47 | Х | Хвиля йде | Kunsht/Куншт, Наталія Шепель | |
