| 1 | — |  | Curious Cases | BBC Radio 4 | |
| 2 | — | S | Show Me the Science with Luke O'Neill | Newstalk | |
| 3 | 1 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 4 | 1 |  | Making Sense with Sam Harris | Sam Harris | |
| 5 | 3 |  | Radiolab | WNYC Studios | |
| 6 | 3 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 7 | 1 |  | More or Less | BBC Radio 4 | |
| 8 | 15 | F | Farming Today | BBC Radio 4 | |
| 9 | 38 |  | Discovery | BBC World Service | |
| 10 | 1 |  | Unexplainable | Vox | |
| 11 | 1 | B | Boring History for Sleep | Velvet | |
| 12 | 4 |  | Ologies with Alie Ward | Alie Ward | |
| 13 | 2 | L | Love The Bees Podcast | Yvonne Johnston | |
| 14 | 3 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 15 | 8 |  | Re:Energise from ESB | ESB | |
| 16 | 27 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 17 | 29 |  | Babbage from The Economist | The Economist | |
| 18 | 88 |  | BBC Inside Science | BBC Radio 4 | |
| 19 | 54 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 20 | 51 |  | Science In Action | BBC World Service | |
| 21 | 51 |  | Rare Earth | BBC Radio 4 | |
| 22 | 3 |  | Future Ecologies | Future Ecologies | |
| 23 | 93 |  | The Origins Podcast with Lawrence Krauss | Lawrence M. Krauss | |
| 24 | 84 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 25 | 13 | M | Mooney Goes Wild | RTÉ Radio 1 | |
| 26 | 19 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 27 | 87 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 28 | 111 |  | That UFO Podcast | That UFO Podcast | |
| 29 | 134 |  | Completely Arbortrary | Completely Arbortrary | |
| 30 | 17 | I | In Your Nature | By BirdWatch Ireland | |
| 31 | 155 |  | Bigfoot and Beyond with Cliff and Bobo | Bigfoot and Beyond LLC | |
| 32 | 163 |  | TED Talks Science and Medicine | TED | |
| 33 | 131 | B | Best of Natural History Radio | BBC Radio 4 | |
| 34 | — |  | Clearer Thinking with Spencer Greenberg | Spencer Greenberg | |
| 35 | — |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 36 | — |  | Astronomy Cast | Fraser Cain and Dr. Pamela Gay | |
| 37 | — |  | Big Picture Science | Big Picture Science | |
| 38 | — |  | The Future of Everything | Stanford Engineering | |
| 39 | — | C | Costing the Earth | BBC Radio 4 | |
| 40 | — |  | Espacio en blanco | Radio Nacional | |
| 41 | — |  | The Acres U.S.A. Podcast | Acres U.S.A.® | |
| 42 | — | T | The Future of Pharma | Samir Gondalia, ISPE Boston | |
| 43 | — |  | The ICHE Podcast | The ICHE Podcast | |
| 44 | — | T | The Session with Tom Swarbrick | Global | |
| 45 | — | E | Elements | BBC World Service | |
| 46 | — | T | The Planet Earth Podcast | BBC Radio 4 | |
| 47 | — | T | The Field Guide to Particle Physics | Sean Downes | |
| 48 | — | 3 | 39 Ways to Save the Planet | BBC Radio 4 | |
| 49 | — | S | Stream Audiobook in Science & Technology, Magazine & Radio | Free Audiobook | |
| 50 | — | A | All Access: Med School Admissions | Christian Essman | |
| 51 | 37 | ![Cosmosis [Formerly The UFO Rabbit Hole]](https://is1-ssl.mzstatic.com/image/thumb/Podcasts211/v4/6e/50/4f/6e504f3a-5967-0f9a-1858-77a5f070b7d4/mza_10360255510263335732.jpeg/100x100bb.jpg) | Cosmosis [Formerly The UFO Rabbit Hole] | Kelly Chase & Jay Christopher King | |
| 52 | 37 |  | BrainStuff | iHeartPodcasts | |
| 53 | 35 |  | The world, the universe and us | New Scientist | |
| 54 | 35 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 55 | 35 |  | 5 Live Science Podcast | BBC Radio 5 Live | |
| 56 | 35 |  | Science Weekly | The Guardian | |
| 57 | 55 | B | Bird Songs with Seán Ronayne | RTÉ lyric fm | |
| 58 | 124 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 59 | 37 |  | Planetary Radio: Space Exploration, Astronomy and Science | The Planetary Society | |
| 60 | 34 |  | Universe Today Podcast | Fraser Cain | |
| 61 | 37 | N | Naturefile | RTÉ lyric fm | |
| 62 | 34 |  | Astrum Space | Astrum | |
| 63 | 14 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 64 | — |  | Robinson's Podcast | Robinson Erhardt | |
| 65 | 36 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 66 | 39 |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 67 | — | 4 | 4 The Soil: A Conversation | Eric Scott Bendfeldt | |
| 68 | 38 |  | Mythfits | Pionaire Podcasting | |
| 69 | 38 | E | Ecolution | RTÉ Kids | |
| 70 | 31 | 6 | 63 Degrees North | NTNU | |
| 71 | 38 | C | Cows and Effect | Paul Allison and Michael Blanche | |
| 72 | 40 | T | The Critter Shed | Collie Ennis & Colette Kinsella for Red Hare Media | |
| 73 | 32 |  | Houston We Have a Podcast | National Aeronautics and Space Administration (NASA) | |
| 74 | — |  | Let's Learn Everything! | Maximum Fun | |
| 75 | 41 | T | The Artificial Human | BBC Radio 4 | |
| 76 | 41 |  | MinuteEarth | Minute Earth | |
| 77 | 41 |  | Safer Chemicals Podcast | European Chemicals Agency | |
| 78 | 41 | T | The HPS Podcast - Conversations from History, Philosophy and Social Studies of Science | HPSUniMelb.org | |
| 79 | — | T | The Knepp Wilding Podcast | Knepp.co.uk | |
| 80 | — | A | A Neuroscientist Explains | The Guardian | |
| 81 | 43 | M | Mind & Life Europe Podcast | Mind & Life Europe | |
| 82 | 42 | S | Scoliosis Dialogues: An SRS Podcast | Scoliosis Research Society | |
| 83 | 35 | F | Futureproof with Jonathan McCrea | Newstalk | |
| 84 | 42 |  | The Psychology Podcast | iHeartPodcasts | |
| 85 | 41 | T | The Signpost Series | Teagasc | |
| 86 | 11 | C | CountryWide | RTÉ Radio 1 | |
| 87 | 34 |  | Speaking of Psychology | American Psychological Association | |
| 88 | 38 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 89 | 38 |  | Origin Stories | The Leakey Foundation | |
| 90 | 38 |  | Physics World Weekly Podcast | Physics World | |
| 91 | 35 |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 92 | 38 | T | The Dairy Trail | Agriland Media | |
| 93 | 36 |  | Osterholm Update | CIDRAP | |
| 94 | 39 | R | Relaxing sleep sounds | Glen Hyland | |
| 95 | 34 |  | Dharma Lab | Dharma Lab | |
| 96 | 38 |  | Choiceology with Katy Milkman | Charles Schwab | |
| 97 | 38 | T | The Deep-Sea Podcast | Thomas Linley | |
| 98 | 29 |  | A Life More Wild | Canopy & Stars | |
| 99 | 39 |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 100 | 38 | T | The Microbiome Mavericks | Dr. Amine Zorgani | |
