| 1 | — |  | Curious Cases | BBC Radio 4 | |
| 2 | 1 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 3 | 1 |  | The Psychology Podcast | iHeartPodcasts | |
| 4 | — |  | Science Weekly | The Guardian | |
| 5 | — |  | Making Sense with Sam Harris | Sam Harris | |
| 6 | 1 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 7 | 1 | S | Show Me the Science with Luke O'Neill | Newstalk | |
| 8 | — | B | Bird Songs with Seán Ronayne | RTÉ lyric fm | |
| 9 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 10 | 2 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 11 | 1 |  | Radiolab | WNYC Studios | |
| 12 | 2 |  | More or Less | BBC Radio 4 | |
| 13 | 19 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 14 | 46 |  | The world, the universe and us | New Scientist | |
| 15 | 2 | F | Futureproof with Jonathan McCrea | Newstalk | |
| 16 | 5 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 17 | 4 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 18 | 100 |  | Why This Universe? | Dan Hooper, Shalma Wegsman | |
| 19 | 4 |  | The Nature Of with Willow Defebaugh | Atmos | |
| 20 | 84 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 21 | 10 |  | Ologies with Alie Ward | Alie Ward | |
| 22 | 128 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 23 | 13 |  | Most Terrifying Places in America | Travel Channel | |
| 24 | — |  | Stanford Psychology Podcast | Stanford Psychology | |
| 25 | 33 |  | Rewilding the World with Ben Goldsmith | Ben Goldsmith | |
| 26 | 41 |  | You Are Not So Smart | You Are Not So Smart | |
| 27 | 50 |  | The Climate Question | BBC World Service | |
| 28 | 37 | R | Relate your Research - a social work podcast | Relate your Research - A research conversation podcast | |
| 29 | 52 |  | Drilled | Pushkin Industries | |
| 30 | 75 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 31 | 80 |  | American Innovations | Audible | |
| 32 | 16 | I | In Your Nature | By BirdWatch Ireland | |
| 33 | — |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 34 | — |  | Decouple | Dr. Chris Keefer | |
| 35 | — | D | Dear Social Worker, Let's Talk | Le'Siran Edwards | |
| 36 | — |  | The Weirdest Thing I Learned This Week | Popular Science | |
| 37 | — | E | Ecolution | RTÉ Kids | |
| 38 | — | T | The Science of Creativity | Keith Sawyer | |
| 39 | — |  | SAPIENS: A Podcast for Everything Human | SAPIENS | |
| 40 | — |  | HOLOSKY PODCAST | Holosky Podcast | |
| 41 | 20 |  | Nature Podcast | Springer Nature Limited | |
| 42 | 19 |  | BBC Inside Science | BBC Radio 4 | |
| 43 | 13 |  | Discovery | BBC World Service | |
| 44 | 26 | N | Naturefile | RTÉ lyric fm | |
| 45 | 19 |  | The Michael Shermer Show | Michael Shermer | |
| 46 | 18 |  | Science In Action | BBC World Service | |
| 47 | 28 |  | When Science Finds a Way | Wellcome | |
| 48 | 28 |  | The Science of Birds | Ivan Phillipsen | |
| 49 | 27 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 50 | 21 | M | Mooney Goes Wild | RTÉ Radio 1 | |
| 51 | 24 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 52 | 27 |  | Robinson's Podcast | Robinson Erhardt | |
| 53 | 20 |  | Beat Your Genes Podcast | BeatYourGenes | |
| 54 | 16 |  | Sasquatch Tracks | Micah Hanks, Dakota Waddell and Jeff Smith | |
| 55 | 11 |  | CrowdScience | BBC World Service | |
| 56 | 19 |  | Skeptoid | Brian Dunning | |
| 57 | 23 |  | Overheard at National Geographic | National Geographic | |
| 58 | 5 |  | Big Picture Science | Big Picture Science | |
| 59 | 15 |  | Ask MIT Climate | MIT Climate Project | |
| 60 | 18 |  | Science Vs | Spotify Studios | |
| 61 | 21 |  | TheThinkingAtheist | The Thinking Atheist | |
| 62 | 27 | I | ImmunoTea: Your Immunology Podcast | Lara Dungan | |
| 63 | 22 | T | The Best of Making Sense with Sam Harris | Sam Harris | |
| 64 | 25 | P | Psychology | Yale School of Medicine | |
| 65 | 22 | M | Modern Physics: Quantum Mechanics (Winter 2012) | Leonard Susskind | |
| 66 | 24 | I | Influence Psychology and Persuasion - Mike Sweet - 10 Minute Coach - Develop and Discover | Mike Sweet | |
| 67 | 22 |  | CREOGs Over Coffee | CREOGs Over Coffee | |
| 68 | 18 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 69 | 23 |  | iNTO THE FRAY RADIO - Encounters with the Paranormal | Shannon LeGro | |
| 70 | 23 |  | The Joy of x | Steven Strogatz and Quanta Magazine | |
| 71 | 23 |  | Constant Wonder | BYUradio | |
| 72 | 23 |  | The Marginal Revolution Podcast | Mercatus Center at George Mason University | |
| 73 | 23 | 6 | 632nm | Misha Shalaginov, Michael Dubrovsky, Xinghui Yin | |
| 74 | 23 | U | Umwelt | Ryan Pemberton | |
| 75 | 23 | C | CME in Minutes: Education in Dermatology | Answers in CME | |
| 76 | 19 |  | All In The Mind | ABC | |
| 77 | 23 | N | Nature Magic | Mary Bermingham | |
| 78 | 23 | L | Leaving Cert Biology Revision | Mr G. O'Donovan | |
| 79 | 23 |  | Outside/In | NHPR | |
| 80 | 19 |  | Unexplainable | Vox | |
| 81 | 8 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 82 | 23 | S | Shirtloads of Science | Dr Karl Kruszelnicki | |
| 83 | 8 |  | Astrum Space | Astrum | |
| 84 | 20 |  | The End Of The World with Josh Clark | iHeartPodcasts | |
| 85 | 7 | C | Chris Skinner's Countryside Podcasts | High Ash Farm | |
| 86 | 11 | I | IBH Neuroscience Rounds | IntegrateBrainHealth | |
| 87 | 24 | N | Nullius in Verba | Smriti Mehta and Daniël Lakens | |
| 88 | 19 | T | The Sod Pod | Grassland Agro | |
| 89 | 27 |  | Mongabay Newscast | Mongabay.com | |
| 90 | 22 | T | The Huw Richards Show | Huw Richards | |
| 91 | 21 | A | A Neuroscientist Explains | The Guardian | |
| 92 | 21 | P | Podsocs - Social Work Podcasts | Podsocs.com | |
| 93 | 21 |  | Heartbreak: A Personal and Scientific Journey | Pushkin Industries | |
| 94 | 21 | F | Focal Point: the IMV imaging podcast | IMV imaging | |
| 95 | 21 | F | Florida Uncut | Mason Gravley | |
| 96 | 12 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 97 | 21 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 98 | 37 |  | That UFO Podcast | That UFO Podcast | |
| 99 | 14 |  | The Warblers by Birds Canada | Andrea Gress for Birds Canada | |
| 100 | 18 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
