| 1 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 2 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 3 | 1 |  | Unexplainable | Vox | |
| 4 | 3 |  | Speaking of Psychology | American Psychological Association | |
| 5 | 2 |  | Making Sense with Sam Harris | Sam Harris | |
| 6 | 1 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 7 | 3 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 8 | 2 |  | Ologies with Alie Ward | Alie Ward | |
| 9 | 2 |  | Curious Cases | BBC Radio 4 | |
| 10 | 1 |  | Radiolab | WNYC Studios | |
| 11 | 3 |  | The Psychology Podcast | iHeartPodcasts | |
| 12 | 6 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 13 | 14 |  | Neuroscience: Amateur Hour | Neuroscience: Amateur Hour | |
| 14 | 76 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 15 | 22 |  | TED Talks Science and Medicine | TED | |
| 16 | 46 |  | Discovery | BBC World Service | |
| 17 | 42 | T | The Best of Making Sense with Sam Harris | Sam Harris | |
| 18 | 45 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 19 | 46 |  | All In The Mind | ABC | |
| 20 | 69 |  | The Wild with Chris Morgan | KUOW News and Information | |
| 21 | 8 |  | More or Less | BBC Radio 4 | |
| 22 | 52 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 23 | 6 |  | Science Weekly | The Guardian | |
| 24 | 74 |  | Nature Podcast | Springer Nature Limited | |
| 25 | 2 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 26 | 14 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 27 | 154 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 28 | 12 |  | Science Vs | Spotify Studios | |
| 29 | 97 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 30 | 4 |  | The world, the universe and us | New Scientist | |
| 31 | 41 |  | HOLOSKY PODCAST | Holosky Podcast | |
| 32 | 18 |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 33 | 2 |  | Short Wave | NPR | |
| 34 | 24 |  | CrowdScience | BBC World Service | |
| 35 | — |  | iLukuluku | All Ears FM | |
| 36 | 17 |  | Astronomy Cast | Fraser Cain and Dr. Pamela Gay | |
| 37 | — | F | FOCUS on Agriculture | Preston & Jason | |
| 38 | — | B | Best Medicine | BBC Radio 4 | |
| 39 | — | P | Permaculture for the Future | Josh Robinson | |
| 40 | — | T | The Dissenter | Ricardo Lopes | |
| 41 | — |  | On The Environment | Yale Center for Environmental Law and Policy | |
| 42 | — | T | The Pursuit of Outdoor Clues | Tristan Gooley | |
| 43 | — | T | The Hearing Review Podcast | The Hearing Review | |
| 44 | 23 |  | The Weirdest Thing I Learned This Week | Popular Science | |
| 45 | 25 |  | Multiverse 5D @ M5D | Multiverse 5D Network | |
| 46 | 31 |  | CREOGs Over Coffee | CREOGs Over Coffee | |
| 47 | 29 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 48 | 24 | T | The We Society | AcSS | |
| 49 | 11 |  | BBC Inside Science | BBC Radio 4 | |
| 50 | 24 |  | So Cultured Podcast | Liv Grant & Taz Shipley | |
| 51 | 29 |  | Blurry Creatures | Blurry Creatures | |
| 52 | 20 | S | Stanford Psychology Podcast | Stanford Psychology | |
| 53 | 25 |  | Ancient Aliens | PodcastOne | |
| 54 | 13 | T | The Birding Life Podcast Network | The Birding Life Podcast Network | |
| 55 | 25 | S | Sustainability Leaders Series | Yale Center for Business and the Environment | |
| 56 | 27 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 57 | 26 | V | VoxDev Development Economics | VoxDev.org | |
| 58 | 25 |  | Lost Women of Science | Lost Women of Science | |
| 59 | 41 |  | Unexpected Elements | BBC World Service | |
| 60 | 19 |  | Grazing Grass Podcast sharing Regenerative Ag Stories | Grazing Grass | |
| 61 | 14 |  | Why Do We Do That? | BBC Radio 4 | |
| 62 | 22 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 63 | 27 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 64 | 2 |  | TheThinkingAtheist | The Thinking Atheist | |
| 65 | 40 |  | The Geography of Everything | Ronni Ravid & Zenne Hellinga | |
| 66 | 27 |  | The Science of Birds | Ivan Phillipsen | |
| 67 | 3 |  | Science Quickly | Scientific American | |
| 68 | 30 | B | Blood Podcast | American Society of Hematology | |
| 69 | 10 | T | The Human Behavior Podcast | The Human Behavior Podcast | |
| 70 | 28 | P | Physics Chemistry Math 🔥❤️ | Sumit Sahu | |
| 71 | 28 |  | The Climate Question | BBC World Service | |
| 72 | 8 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 73 | 29 |  | Because Language - a podcast about linguistics, the science of language. | Daniel Midgley, Ben Ainslie, and Hedvig Skirgård | |
| 74 | 29 | M | Mycotoxin Matters | Alltech | |
| 75 | 29 |  | American Innovations | Audible | |
| 76 | 28 | P | Pharmaceutical Executive | Pharmaceutical Executive Podcast | |
| 77 | 28 | S | Sustainability Bites in association with Nestlé Professional | Footprint Media Group | |
| 78 | 28 | S | Science News Daily | brief.news | |
| 79 | 28 |  | Psychoanalysis & You | APsA American Psychoanalytic Association | |
| 80 | 28 |  | The History of Chemistry | Steve Cohen | |
| 81 | 28 | U | Underground History | Chelsea Rose | |
| 82 | 28 | L | Leaguecast | Produced by the League Against Cruel Sports | |
| 83 | 28 | B | Better Food. Better World. | United Nations World Food Programme | |
| 84 | 28 | S | Sundays with Saima & Co. | Saima | |
| 85 | 28 |  | Freakonomics, M.D. | Freakonomics Radio + Stitcher | |
| 86 | 22 | S | Simplifying Complexity | Sean Brady from Brady Heywood | |
| 87 | 16 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 88 | 60 |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 89 | 28 |  | SciShow Tangents | Complexly | |
| 90 | 8 |  | This Week in Cardiology | Medscape | |
| 91 | 4 |  | Nephilim Death Squad | TopLobsta Productions | |
| 92 | 23 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 93 | 12 |  | That UFO Podcast | That UFO Podcast | |
| 94 | 16 |  | Astrum Space | Astrum | |
| 95 | 24 |  | The Couples Therapist Couch | Shane Birkel | |
| 96 | 21 |  | Science In Action | BBC World Service | |
| 97 | 24 | M | Mushroom Revival Podcast | Alex Dorr | |
| 98 | 22 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 99 | 3 |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 100 | 84 |  | Living Planet | DW | |
