| 1 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 2 | — |  | StarTalk Radio | Neil deGrasse Tyson | |
| 3 | — |  | Unexplainable | Vox | |
| 4 | — |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 5 | 3 |  | Radiolab | WNYC Studios | |
| 6 | 1 |  | Making Sense with Sam Harris | Sam Harris | |
| 7 | 1 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 8 | 2 |  | Science Vs | Spotify Studios | |
| 9 | 2 |  | Ologies with Alie Ward | Alie Ward | |
| 10 | 20 |  | Discovery | BBC World Service | |
| 11 | 14 |  | Science Weekly | The Guardian | |
| 12 | 1 |  | Curious Cases | BBC Radio 4 | |
| 13 | 5 |  | Speaking of Psychology | American Psychological Association | |
| 14 | 5 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 15 | 2 |  | The Marginal Revolution Podcast | Mercatus Center at George Mason University | |
| 16 | 150 |  | The Science of Everything Podcast | James Fodor | |
| 17 | 4 |  | Freakonomics, M.D. | Freakonomics Radio + Stitcher | |
| 18 | 1 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 19 | 5 |  | The Psychology Podcast | iHeartPodcasts | |
| 20 | 1 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 21 | 6 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 22 | 27 |  | TED Talks Science and Medicine | TED | |
| 23 | 74 |  | Blurry Creatures | Blurry Creatures | |
| 24 | — |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 25 | 34 |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 26 | 34 |  | The Astrophysics Podcast | Paul Duffell | |
| 27 | 68 |  | DNA Today: A Genetics Podcast | Kira Dineen, Gene Pool Media | |
| 28 | 35 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 29 | 17 |  | More or Less | BBC Radio 4 | |
| 30 | 14 |  | Ask a Spaceman! | Paul M. Sutter | |
| 31 | — | B | Best Medicine | BBC Radio 4 | |
| 32 | 95 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 33 | 6 |  | Science Friday | Science Friday and WNYC Studios | |
| 34 | 136 |  | Origin Stories | The Leakey Foundation | |
| 35 | 112 |  | Bite Back with Abbey Sharp | Abbey Sharp / Frequency Podcast Network | |
| 36 | — |  | The Answer Is Transaction Costs | Michael Munger | |
| 37 | — | T | The Legend Effect (Master Influence and Attraction) | Howie Chan | |
| 38 | — |  | Settle the Stars: The Science of Space Exploration | Edgeworks Nebula | |
| 39 | 19 |  | Opinionated History of Mathematics | Intellectual Mathematics | |
| 40 | — | H | Heal NPD | Mark Ettensohn, Psy.D. | |
| 41 | — | E | Economics In Ten | Economics In Ten | |
| 42 | — |  | Si Fi | Quiet. Please | |
| 43 | — |  | Rare Earth | BBC Radio 4 | |
| 44 | — |  | The Toxpod | The International Association of Forensic Toxicologists (TIAFT) | |
| 45 | — |  | American Innovations | Audible | |
| 46 | — | T | The Immaculate Deception | Somethin' Else / Sony Music Entertainment | |
| 47 | — | T | This Week in Pediatric Oncology | Solving Kids' Cancer | |
| 48 | — | E | Editors in Conversation | American Society for Microbiology | |
| 49 | — | T | The Living Soil Podcast | Grass Roots | |
| 50 | — |  | THE CLUB OF ROME PODCAST | The Club of Rome | |
| 51 | — | C | Conservation and Science | Tommy's Outdoors | |
| 52 | — | J | Johns Hopkins Medicine Gastroenterology Podcasts | Elizabeth Tracey | |
| 53 | — | G | Gastroenterology Learning Network | Gastroenterology Learning Network | |
| 54 | — | T | The Sheep Show podcast | Jill Noble | |
| 55 | — | F | Fix This | Fix This | |
| 56 | — | C | Conservation Chronicles | Jonah & Mariana | |
| 57 | 34 |  | Living Planet | DW | |
| 58 | 26 |  | Ecosystemic Futures | Dyan Finkhousen: CEO of Shoshin Works | |
| 59 | 37 |  | The Life Scientific | BBC Radio 4 | |
| 60 | 33 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 61 | 35 |  | Robinson's Podcast | Robinson Erhardt | |
| 62 | 29 |  | Let's Learn Everything! | Maximum Fun | |
| 63 | 27 |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 64 | 33 |  | CREOGs Over Coffee | CREOGs Over Coffee | |
| 65 | 37 |  | The Origins Podcast with Lawrence Krauss | Lawrence M. Krauss | |
| 66 | 31 |  | I Was Prey | Animal Planet | |
| 67 | 26 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 68 | 28 |  | Nature Podcast | Springer Nature Limited | |
| 69 | 40 |  | The Climate Question | BBC World Service | |
| 70 | 14 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 71 | 33 |  | Big Picture Science | Big Picture Science | |
| 72 | 38 |  | Why This Universe? | Dan Hooper, Shalma Wegsman | |
| 73 | 27 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 74 | 23 |  | Spacewalk with Everyday Astronaut | Tim Dodd | |
| 75 | 33 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 76 | 31 |  | Crime Pays But Botany Doesn't | Tony Santore | |
| 77 | 34 |  | 5 Live Science Podcast | BBC Radio 5 Live | |
| 78 | 31 |  | Countercurrent: conversations with Professor Roger Kneebone | Professor Roger Kneebone | |
| 79 | 31 | R | RainManCJ | RainManCJ | |
| 80 | 30 | G | Green Noise | CapeNature | |
| 81 | 28 | A | Astrum Podcast | Dennis Ariel | Astrum Brasil | |
| 82 | 30 | T | The Skin Science Podcast with Thomas Hitchcock, Ph.D. | PR | |
| 83 | 29 |  | The Medical School Podcast | Teach Me Anki | |
| 84 | 87 |  | Skeptoid | Brian Dunning | |
| 85 | 30 |  | The Science Show | ABC | |
| 86 | 29 | T | The Birding Life Podcast Network | The Birding Life Podcast Network | |
| 87 | 85 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 88 | 27 |  | Regenerative Agriculture Podcast | John Kempf | |
| 89 | 2 |  | Relebogile Mabotja hosts The Naked Scientist | Radio 702 | |
| 90 | 53 |  | All In The Mind | ABC | |
| 91 | 20 |  | CrowdScience | BBC World Service | |
| 92 | 2 |  | Universe Today Podcast | Fraser Cain | |
| 93 | 49 | S | Students of Surgery | Martin Brand | |
| 94 | 21 |  | Brave New World | Evening Standard | |
| 95 | 33 | T | The Best of Making Sense with Sam Harris | Sam Harris | |
| 96 | 10 |  | The Michael Shermer Show | Michael Shermer | |
| 97 | 1 |  | BBC Inside Science | BBC Radio 4 | |
| 98 | 1 |  | You Are Not So Smart | You Are Not So Smart | |
| 99 | 32 |  | Science Quickly | Scientific American | |
| 100 | 32 |  | Professor Brian Cox Live Q and A Podcast | The Cosmic Shambles Network | |
