| 1 | — |  | Making Sense with Sam Harris | Sam Harris | |
| 2 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 3 | 2 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 4 | — |  | Unexplainable | Vox | |
| 5 | 2 |  | Ologies with Alie Ward | Alie Ward | |
| 6 | 1 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 7 | 3 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 8 | — | T | Talks On Psychoanalysis | International Psychoanalytical Association | |
| 9 | 7 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 10 | 4 |  | Science Weekly | The Guardian | |
| 11 | 107 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 12 | 4 |  | Science Vs | Spotify Studios | |
| 13 | 20 | T | This Wild Life Conservation Podcast | Amy Turner | |
| 14 | 5 |  | Radiolab | WNYC Studios | |
| 15 | 2 |  | Curious Cases | BBC Radio 4 | |
| 16 | 81 |  | Mythfits | Pionaire Podcasting | |
| 17 | 6 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 18 | 143 | B | Boring History for Sleep | Velvet | |
| 19 | 22 |  | The Michael Shermer Show | Michael Shermer | |
| 20 | — |  | Nautilus Narrations | Nautilus | |
| 21 | 165 |  | Your Brain On | Drs. Ayesha and Dean Sherzai | |
| 22 | 10 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 23 | 5 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 24 | — |  | H2TechTalk | H2Tech | |
| 25 | 12 |  | More or Less | BBC Radio 4 | |
| 26 | 29 |  | Ancient Aliens | PodcastOne | |
| 27 | 13 |  | Into the Impossible With Brian Keating | Big Bang Productions Inc. | |
| 28 | 65 |  | Most Terrifying Places in America | Travel Channel | |
| 29 | 14 |  | Regenerative Agriculture Podcast | John Kempf | |
| 30 | 11 | S | Students of Surgery | Martin Brand | |
| 31 | 11 | E | Everyday Neuro: Psychology and Neuroscience Podcast | Dr Janine Cooper: Cognitive Psychologist, Neuroscientist, Neuropsychology researcher. | |
| 32 | — |  | Living Planet | DW | |
| 33 | — | P | Plantopia | The American Phytopathological Society (APS) | |
| 34 | 161 | T | The Birding Life Podcast Network | The Birding Life Podcast Network | |
| 35 | 11 | T | The DemystifySci Podcast | DemystifySci | |
| 36 | 15 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 37 | — | S | Science on the ISS | Steve Nerlich | |
| 38 | 16 | J | Johns Hopkins Malaria Minute | Johns Hopkins Bloomberg School of Public Health | |
| 39 | 16 |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 40 | 15 |  | EverydaySpy Podcast | Andrew Bustamante | |
| 41 | 15 |  | Ground Truths | Eric Topol | |
| 42 | 15 | T | The Herd Health Podcast | Boehringer Ingelheim Animal Health Canada Inc. | |
| 43 | 15 | Y | You Herd Right | Phibro Animal Health | |
| 44 | 15 |  | UnBuild It Podcast | Unbuild It Podcast | |
| 45 | 14 |  | Songs 4 FRCR: Radiology FRCR 2A Revision | FRCR Revision | |
| 46 | 13 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 47 | 17 |  | Universe Today Podcast | Fraser Cain | |
| 48 | 26 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 49 | 17 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 50 | 11 |  | The Life Scientific | BBC Radio 4 | |
| 51 | 16 | T | The Power Shift: Decolonising Development | Kate Bird | |
| 52 | 18 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 53 | 17 |  | A Life More Wild | Canopy & Stars | |
| 54 | 5 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 55 | 18 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 56 | 18 | T | The Perception & Action Podcast | Rob Gray | |
| 57 | 4 |  | Invisibilia | NPR | |
| 58 | 16 |  | Rabies Today | United Against Rabies | |
| 59 | 16 | S | Safari Stories | Trunks and Tracks | |
| 60 | 16 |  | RSM River Mechanics Podcast | Stanford Gibson | |
| 61 | 16 | I | International Law | Yale Law School | |
| 62 | 16 | R | Review of International Studies – The podcast | Review of International Studies | |
| 63 | 21 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 64 | 13 |  | Blurry Creatures | Blurry Creatures | |
| 65 | 83 |  | BBC Inside Science | BBC Radio 4 | |
| 66 | 91 |  | Science In Action | BBC World Service | |
| 67 | 27 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 68 | 21 |  | The Psychology Podcast | iHeartPodcasts | |
| 69 | 2 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 70 | 1 |  | The Wild with Chris Morgan | KUOW News and Information | |
| 71 | 10 |  | Choiceology with Katy Milkman | Charles Schwab | |
| 72 | 24 |  | Alive Again | iHeartPodcasts | |
| 73 | 23 |  | Speaking of Psychology | American Psychological Association | |
| 74 | 2 | B | BJA Education Podcasts | BJA Education | |
| 75 | 17 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 76 | 22 |  | New Books in Critical Theory | Marshall Poe | |
| 77 | 21 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 78 | 15 |  | CrowdScience | BBC World Service | |
| 79 | 10 |  | Real Ghost Stories Online | Real Ghost Stories Online | Paranormal, Supernatural & Horror Radio | |
| 80 | 1 | B | Big Picture Science | Big Picture Science | |
| 81 | 8 |  | Big Picture Science | Big Picture Science | |
| 82 | 16 |  | Neuroscience: Amateur Hour | Neuroscience: Amateur Hour | |
| 83 | 21 | T | The Upper Hand: Chuck & Chris Talk Hand Surgery | Chuck and Chris | |
| 84 | 15 |  | The Pulse | WHYY | |
| 85 | 9 | T | The Naked Scientists Podcast | The Naked Scientists | |
| 86 | 29 | V | VoxDev Development Economics | VoxDev.org | |
| 87 | 7 | F | Futures Research Unpacked | Wensupu Yang | |
| 88 | 28 |  | The Quanta Podcast | Quanta Magazine | |
| 89 | 25 |  | Rewilding the World with Ben Goldsmith | Ben Goldsmith | |
| 90 | 10 | T | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 91 | 26 | I | Inquiring Minds | Indre Viskontas | |
| 92 | 24 | T | The Decision Corner | The Decision Lab | |
| 93 | 23 |  | Astronomy Daily: Space News Updates | bitesz.com | |
| 94 | 18 |  | Nature Guys | Nature Guys | |
| 95 | 17 | A | A Light On | A Light On | |
| 96 | 17 |  | The Social-Engineer Podcast | Social-Engineer, LLC | |
| 97 | 22 |  | Overheard at National Geographic | National Geographic | |
| 98 | 11 |  | Discovery | BBC World Service | |
| 99 | 47 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 100 | 10 |  | Science Friday | Science Friday and WNYC Studios | |
