| 1 | 3 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 2 | 5 |  | Science Weekly | The Guardian | |
| 3 | 3 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 4 | 2 |  | Making Sense with Sam Harris | Sam Harris | |
| 5 | 10 | B | Bird Songs with Seán Ronayne | RTÉ lyric fm | |
| 6 | 3 |  | The Climate Question | BBC World Service | |
| 7 | 16 |  | More or Less | BBC Radio 4 | |
| 8 | 27 | E | Equine Med On The Go | Sacha Brévault et Angélique Hayot | |
| 9 | 7 |  | Curious Cases | BBC Radio 4 | |
| 10 | — |  | Unexplainable | Vox | |
| 11 | — |  | Drilled | Pushkin Industries | |
| 12 | 11 |  | Radiolab | WNYC Studios | |
| 13 | 10 |  | Ologies with Alie Ward | Alie Ward | |
| 14 | 6 |  | Oceans: Life Under Water | Crowd Network | Greenpeace UK | |
| 15 | 40 |  | BBC Inside Science | BBC Radio 4 | |
| 16 | 27 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 17 | 28 |  | Science Vs | Spotify Studios | |
| 18 | 28 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 19 | 29 |  | The Life Scientific | BBC Radio 4 | |
| 20 | 15 |  | Robinson's Podcast | Robinson Erhardt | |
| 21 | 30 |  | The Origins Podcast with Lawrence Krauss | Lawrence M. Krauss | |
| 22 | 65 |  | Speaking of Psychology | American Psychological Association | |
| 23 | 39 | M | Mysteries of the Universe | TheTuringApp.Com | |
| 24 | 1 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 25 | 48 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 26 | 14 | S | Show Me the Science with Luke O'Neill | Newstalk | |
| 27 | 19 |  | The Nature Of with Willow Defebaugh | Atmos | |
| 28 | 110 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 29 | 120 |  | Unexpected Elements | BBC World Service | |
| 30 | 122 |  | Short Wave | NPR | |
| 31 | — |  | On Humans | Ilari Mäkelä | |
| 32 | — | M | Maths on the Move | plus.maths.org | |
| 33 | — |  | The Micah Hanks Program | Micah Hanks | |
| 34 | 162 | C | COACH+ The Art & Science of Positive Psychology Coaching 3 | Dr Suzy Green | |
| 35 | 152 | N | Naturefile | RTÉ lyric fm | |
| 36 | — | N | New Books in Public Policy | New Books Network | |
| 37 | — | T | The Math Club | Pete and Noah | |
| 38 | — | C | Combinatoire - Timothy Gowers | Collège de France | |
| 39 | — | N | New Scientist Weekly | New Scientist | |
| 40 | — |  | Couched | Dr. Almas (Ally) Merchant, Dr. Billie Pivnick & Dr. Romy Reading, Produced by Hangar Studios, NYC | |
| 41 | — |  | Slow Radio | BBC Radio 3 | |
| 42 | — |  | Breaking Math Podcast | Autumn Phaneuf & Noah Giansiracusa | |
| 43 | — |  | Better Brain Fitness (a Brainjo Production) | Josh Turknett, MD | |
| 44 | — | W | White Coat, Black Art | CBC | |
| 45 | — |  | Inflection Point | C&EN | |
| 46 | — | T | The Climate Change Hoax | Karl Michael | |
| 47 | — | S | Soul Fire Holistics | Ivy Donovan | |
| 48 | — | N | Not So Angry Environmentalists | Urvari | |
| 49 | — | S | Sum of All Parts | ABC listen | |
| 50 | — | A | American Journal of Public Health Podcast | AJPH | |
| 51 | 6 |  | In Defense of Plants Podcast | In Defense of Plants | |
| 52 | 39 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 53 | 35 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 54 | 42 | F | Futureproof with Jonathan McCrea | Newstalk | |
| 55 | 36 |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 56 | 42 |  | Discovery | BBC World Service | |
| 57 | 35 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 58 | 41 |  | Lingthusiasm - A podcast that's enthusiastic about linguistics | Gretchen McCulloch and Lauren Gawne | |
| 59 | 35 | M | Mooney Goes Wild | RTÉ Radio 1 | |
| 60 | 39 |  | The Skeptic Podcast | The Skeptic | |
| 61 | 74 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 62 | 34 |  | ScienceStuff | iHeartPodcasts | |
| 63 | 36 | N | Nauka To Lubię | Tomasz Rożek | |
| 64 | 27 |  | Great Mysteries of Physics | The Conversation | |
| 65 | 39 |  | Big Picture Science | Big Picture Science | |
| 66 | 133 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 67 | 95 |  | The Psychology Podcast | iHeartPodcasts | |
| 68 | 39 | W | Wild Tales | Nature Podcast | National Trust | |
| 69 | 37 |  | SciShow Tangents | Complexly | |
| 70 | 36 |  | The Logic of Risk | Pasquale Cirillo | |
| 71 | 41 | T | The Sports Coaching Hub Podcast | Cardiff Metropolitan University | |
| 72 | 41 | P | Psychotherapy and Applied Psychology | Dr. Daniel W Cox | |
| 73 | 40 |  | Safeguarding Sound Science | National Center for Science Education | |
| 74 | — |  | Career Conversations | Royal College of Physicians of Edinburgh | |
| 75 | — | C | Clinical Neurophysiology - Ask the Experts | Eishi Asano, Nicholas Stevenson | |
| 76 | 40 |  | Medicine and the Machine | Medscape | |
| 77 | 39 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 78 | 39 | E | Emotional Intelligence | Gobinder Gill | |
| 79 | 38 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 80 | 38 |  | The world, the universe and us | New Scientist | |
| 81 | 37 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 82 | 33 |  | Mysterious Universe | 8th Kind | |
| 83 | 15 |  | CrowdScience | BBC World Service | |
| 84 | 37 | I | In Your Nature | By BirdWatch Ireland | |
| 85 | 19 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 86 | 36 |  | Brave New Planet | Pushkin Industries | |
| 87 | 31 |  | Unbiased Science | @unbiasedscipod | |
| 88 | 36 | T | The Physio Matters Podcast | Jack Chew | |
| 89 | 35 |  | Clearer Thinking with Spencer Greenberg | Spencer Greenberg | |
| 90 | 37 | T | The Different Minds podcast series | John Offord | |
| 91 | 33 | T | The Neuro Times | The Neuro Times | |
| 92 | 33 |  | Win-Win with Liv Boeree | Liv Boeree | |
| 93 | 33 |  | Science unscripted | DW | |
| 94 | 33 | C | Captain Paul Watson Foundation Podcast | Captain Paul Watson | |
| 95 | 32 | T | The Alba Diversity Podcast | The ALBA Network | |
| 96 | 31 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 97 | 33 | L | Leaving Cert Biology Revision | Mr G. O'Donovan | |
| 98 | 28 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 99 | 11 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 100 | 29 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
