| 1 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 2 | 1 |  | More or Less | BBC Radio 4 | |
| 3 | 7 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 4 | — |  | Ologies with Alie Ward | Alie Ward | |
| 5 | 8 |  | Every Animal Ever | Dr Cesar Puechmarin, Zach Mander | |
| 6 | — |  | Radiolab | WNYC Studios | |
| 7 | 5 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 8 | 7 | O | Our Changing World | RNZ | |
| 9 | 3 |  | Science Weekly | The Guardian | |
| 10 | 1 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 11 | 3 |  | Science Vs | Spotify Studios | |
| 12 | 5 |  | Curious Cases | BBC Radio 4 | |
| 13 | 5 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 14 | 3 |  | Wild Sounds: Kākāpō Files II | RNZ | |
| 15 | 1 |  | All In The Mind | ABC | |
| 16 | 5 |  | Making Sense with Sam Harris | Sam Harris | |
| 17 | 12 |  | Ingenious: how research transforms our world | UoAMediaTeam | |
| 18 | 4 | G | Goodfellow Unit | The Goodfellow Unit (University of Auckland) | |
| 19 | 27 | B | Blazing the Trail | University of Sydney / Australian Museum / Break Thru Films | |
| 20 | — | T | The Knepp Wilding Podcast | Knepp.co.uk | |
| 21 | 2 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 22 | 1 |  | Unexplainable | Vox | |
| 23 | 13 |  | The Weirdest Thing I Learned This Week | Popular Science | |
| 24 | 87 | D | DOC Sounds of Science Podcast | Department of Conservation | |
| 25 | 1 |  | Speaking of Psychology | American Psychological Association | |
| 26 | 9 |  | CrowdScience | BBC World Service | |
| 27 | 65 |  | In Defense of Plants Podcast | In Defense of Plants | |
| 28 | 9 |  | The world, the universe and us | New Scientist | |
| 29 | 52 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 30 | 12 |  | Why This Universe? | Dan Hooper, Shalma Wegsman | |
| 31 | 9 |  | BBC Inside Science | BBC Radio 4 | |
| 32 | 12 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 33 | — |  | Medical Mentor | Medscape | |
| 34 | 11 |  | Discovery | BBC World Service | |
| 35 | — | N | New Books in Environmental Studies | Marshall Poe | |
| 36 | — | E | Entropy Rising | Jacob and Lucas | |
| 37 | — | M | Microbiome (Video) | UCTV | |
| 38 | 25 | N | New Books in Anthropology | New Books Network | |
| 39 | 16 | T | The Social Work Stories Podcast | The Social Work Stories Team | |
| 40 | 20 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 41 | 69 |  | Dr Karl Podcast | triplej | |
| 42 | 15 |  | Science In Action | BBC World Service | |
| 43 | 14 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 44 | 78 |  | Need To Know | Bryce Zabel | |
| 45 | 21 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 46 | 21 |  | The Climate Question | BBC World Service | |
| 47 | 9 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 48 | 89 |  | Gastroenterology Learning Network | Gastroenterology Learning Network | |
| 49 | 95 |  | Tiny Matters | Multitude | |
| 50 | — |  | The Science Show | ABC | |
| 51 | — |  | Head Shepherd | Mark Ferguson | |
| 52 | 18 |  | Universe Today Podcast | Fraser Cain | |
| 53 | 21 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 54 | 95 | T | The New Zealand General Practice Podcast | Dr Jo Scott-Jones | |
| 55 | 100 | L | Lab Notes | Lab Notes | |
| 56 | 28 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 57 | — | T | Two Psychologists Four Beers | Yoel Inbar, Michael Inzlicht, and Alexa Tullett | |
| 58 | — | T | This Natural Life | BBC Radio 4 | |
| 59 | 26 |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 60 | — |  | This Week in Space (Audio) | TWiT | |
| 61 | — |  | Daniel and Jorge Explain the Universe | iHeartPodcasts | |
| 62 | — |  | The Social Work Lens | Vermont CWTP | |
| 63 | — | T | The Animal Sensemaker | The Observer | |
| 64 | — |  | The Behavioral Observations Podcast with Matt Cicoria | Matt Cicoria | |
| 65 | — | S | Space | BBC World Service | |
| 66 | — |  | ExtinctZoo | ExtinctZoo | |
| 67 | — | E | Economics In Ten | Economics In Ten | |
| 68 | 38 | A | Acceptance & Commitment Therapy Questions & Answers | Jacob Martinez | |
| 69 | — | Y | Your Place And Mine Podcast | BBC Radio Ulster | |
| 70 | — | H | HEPATOLOGY Podcast | AASLD | |
| 71 | — | G | Gastroenterology Learning Network | Gastroenterology Learning Network | |
| 72 | 27 |  | The Plodcast | Our Media | |
| 73 | 42 |  | TED Talks Science and Medicine | TED | |
| 74 | 34 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 75 | 36 |  | Overheard at National Geographic | National Geographic | |
| 76 | 3 |  | Unexpected Elements | BBC World Service | |
| 77 | 36 |  | Somewhere in the Skies | SpectreVision Radio | |
| 78 | 35 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 79 | 27 | 天 | 天方烨谈 | 基因频道 | |
| 80 | — |  | Ask the Naked Scientists | Dr Chris Smith | |
| 81 | 32 | V | Voice of Tangaroa | RNZ | |
| 82 | 35 |  | The Life Scientific | BBC Radio 4 | |
| 83 | 35 |  | Most Terrifying Places in America | Travel Channel | |
| 84 | 33 |  | Ophthalmology off the Grid by Eyetube | Eyetube | |
| 85 | 32 | M | MissPerceived | Audiocrafty | |
| 86 | 15 |  | So Cultured Podcast | Liv Grant & Taz Shipley | |
| 87 | 21 | B | Blood Podcast | American Society of Hematology | |
| 88 | 34 |  | Just the Zoo of Us | Ellen & Christian Weatherford | |
| 89 | 30 | C | Chasing Consciousness | Freddy Drabble | |
| 90 | 16 |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 91 | 16 |  | Short Wave | NPR | |
| 92 | 35 |  | Freakonomics, M.D. | Freakonomics Radio + Stitcher | |
| 93 | 3 |  | Scotland Outdoors | BBC Radio Scotland | |
| 94 | 34 | T | The Physio Matters Podcast | Jack Chew | |
| 95 | 39 | T | The Orbital Mechanics Podcast | David Fourman, Ben Etherington, and Dennis Just | |
| 96 | 38 | S | Sarah's Country | Perriam Media Limited | |
| 97 | 36 | R | RadioGraphics Podcast | RSNA | Radiological Society of North America (RSNA) | |
| 98 | 36 | T | The Lab Coats & Life™ Podcast | The Lab Coats & Life™ Podcast | |
| 99 | 35 | R | Radiology Podcast | RSNA | The Radiological Society of North America | |
| 100 | 35 | T | Tune into Nature with Karthic | Tune into Nature | |
