| 1 | 1 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 2 | 1 |  | Making Sense with Sam Harris | Sam Harris | |
| 3 | — |  | StarTalk Radio | Neil deGrasse Tyson | |
| 4 | 1 |  | Radiolab | WNYC Studios | |
| 5 | 3 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 6 | 2 |  | Unexplainable | Vox | |
| 7 | 1 |  | ScienceStuff | iHeartPodcasts | |
| 8 | 1 |  | Ologies with Alie Ward | Alie Ward | |
| 9 | — |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 10 | 4 | T | The Human Behavior Podcast | The Human Behavior Podcast | |
| 11 | 7 |  | The Psychology Podcast | iHeartPodcasts | |
| 12 | 2 |  | Science Vs | Spotify Studios | |
| 13 | 2 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 14 | 59 |  | The Science of Everything Podcast | James Fodor | |
| 15 | 14 |  | Discovery | BBC World Service | |
| 16 | 12 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 17 | 9 | A | Ask the Naked Scientists | Dr Chris Smith | |
| 18 | 1 |  | More or Less | BBC Radio 4 | |
| 19 | 6 |  | Curious Cases | BBC Radio 4 | |
| 20 | — |  | The Weirdest Thing I Learned This Week | Popular Science | |
| 21 | 9 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 22 | — |  | Stanford Psychology Podcast | Stanford Psychology | |
| 23 | 8 | B | BJA: British Journal of Anaesthesia | Rik Thomas, Podcast Editor | |
| 24 | 53 | S | Students of Surgery | Martin Brand | |
| 25 | 24 |  | Speaking of Psychology | American Psychological Association | |
| 26 | 54 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 27 | 6 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 28 | 11 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 29 | 13 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 30 | 143 |  | The Orthobullets Podcast | Orthobullets | |
| 31 | 16 |  | Nature Podcast | Springer Nature Limited | |
| 32 | 81 |  | CREOGs Over Coffee | CREOGs Over Coffee | |
| 33 | 13 |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 34 | 58 |  | BirdNote Daily | BirdNote | |
| 35 | 74 |  | Ancient Aliens | PodcastOne | |
| 36 | — |  | New Books in Psychoanalysis | Marshall Poe | |
| 37 | 79 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 38 | — | N | National Geographic Magazine | Radio Eye | |
| 39 | 111 |  | In Defense of Plants Podcast | In Defense of Plants | |
| 40 | 105 |  | Neuroscience: Amateur Hour | Neuroscience: Amateur Hour | |
| 41 | 96 |  | Freakonomics, M.D. | Freakonomics Radio + Stitcher | |
| 42 | 147 |  | Let's Learn Everything! | Maximum Fun | |
| 43 | — | G | GI Insights | ReachMD | |
| 44 | — |  | Water We Doing? | David Evans | |
| 45 | — |  | SAPIENS: A Podcast for Everything Human | SAPIENS | |
| 46 | — | A | Animals To The Max Podcast | Corbin Maxey | |
| 47 | 17 | T | The Birding Life Podcast Network | The Birding Life Podcast Network | |
| 48 | — | E | Everyday Neuro: Psychology and Neuroscience Podcast | Dr Janine Cooper: Cognitive Psychologist, Neuroscientist, Neuropsychology researcher. | |
| 49 | — | T | The Structural Engineering Podcast | Max and Zach | |
| 50 | — |  | The Green Room: A Podcast from Obstetrics & Gynecology | Obstetrics & Gynecology (Green Journal) | |
| 51 | — |  | The Elective Rotation: A Critical Care Hospital Pharmacy Podcast | Pharmacy Joe | |
| 52 | — |  | DNA Today: A Genetics Podcast | Kira Dineen, Gene Pool Media | |
| 53 | — | E | ERS Publications Podcasts | ERS Publications Podcasts | |
| 54 | — | T | TTBOOK Presents: Deep Time | To The Best Of Our Knowledge | |
| 55 | — | T | The ENYGO Podcast | ENYGO | |
| 56 | — | R | RCPCH Podcasts | Royal College of Paediatrics and Child Health | |
| 57 | — | G | Good Heavens! The Human Side of Astronomy | goodheavens | |
| 58 | — | S | Seismic Soundoff | Society of Exploration Geophysicists (SEG) | |
| 59 | 36 |  | Science Magazine Podcast | Science Magazine | |
| 60 | 36 |  | Dr. Chapa’s OBGYN Clinical Pearls | Dr. Chapa’s Clinical Pearls | |
| 61 | 10 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 62 | 35 | W | Whales | Quiet. Please | |
| 63 | 38 | M | Mathematics Simplified | Anjali Sharma | |
| 64 | 14 |  | Science Friday | Science Friday and WNYC Studios | |
| 65 | 15 |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 66 | 34 | T | The Systemic Way | Sezer and Julie | |
| 67 | 34 |  | The Nature Of with Willow Defebaugh | Atmos | |
| 68 | 33 | S | Science Talk | Scientific American | |
| 69 | 32 |  | Invisibilia | NPR | |
| 70 | 25 |  | Flash Forward | Rose Eveleth | |
| 71 | 33 |  | Cool Worlds Podcast | coolworldslab | |
| 72 | 36 | O | Oil & Gas Journal ReEnterprised | Endeavor Business Media | |
| 73 | 39 | L | Let's Talk Micro | Luis Plaza | |
| 74 | 34 |  | Emergency Medicine Board Bombs | EM Board Bombs | |
| 75 | 36 |  | What Remains | WRAL News | Raleigh, North Carolina | |
| 76 | 35 | P | Pediatric Anesthesia Podcast | Pediatric Anesthesia | |
| 77 | 35 | T | The Journey of A Researcher | Dr. Kasturi Banerjee | |
| 78 | 35 | I | International Politics | Yale University | |
| 79 | 35 | T | The Universe Speaks in Numbers | Faber and Faber | |
| 80 | 34 |  | The Bulletproof Musician | Noa Kageyama | |
| 81 | 34 |  | Rebelliously Curious with Chrissy Newton: UFOs, Science, Culture and Futurism | Chrissy Newton | |
| 82 | 34 | O | Orbital Path | PRX | |
| 83 | 61 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 84 | 31 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 85 | 89 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 86 | 27 |  | CrowdScience | BBC World Service | |
| 87 | 31 |  | Choiceology with Katy Milkman | Charles Schwab | |
| 88 | 22 |  | Paranormal Mysteries | Nic Ryan | Paranormal Mysteries Podcast | |
| 89 | 28 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 90 | 18 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 91 | 37 |  | Multiverse 5D @ M5D | Multiverse 5D Network | |
| 92 | 40 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 93 | 7 |  | All In The Mind | ABC | |
| 94 | 38 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 95 | 19 |  | Overheard at National Geographic | National Geographic | |
| 96 | 21 | E | Equine Med On The Go | Sacha Brévault et Angélique Hayot | |
| 97 | 13 |  | This Week in Virology | Vincent Racaniello | |
| 98 | 36 |  | The Climate Question | BBC World Service | |
| 99 | 39 | T | The Best of Making Sense with Sam Harris | Sam Harris | |
| 100 | 30 | T | The Root Of The Science Podcast | Anne Chisa | |
