| 1 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 2 | — |  | StarTalk Radio | Neil deGrasse Tyson | |
| 3 | 1 |  | Ologies with Alie Ward | Alie Ward | |
| 4 | 1 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 5 | — |  | Unexplainable | Vox | |
| 6 | 2 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 7 | — |  | The Naked Scientists Podcast | The Naked Scientists | |
| 8 | 1 |  | CREOGs Over Coffee | CREOGs Over Coffee | |
| 9 | 3 |  | Radiolab | WNYC Studios | |
| 10 | — |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 11 | 11 |  | Short Wave | NPR | |
| 12 | 1 |  | More or Less | BBC Radio 4 | |
| 13 | 29 |  | Science Weekly | The Guardian | |
| 14 | 1 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 15 | 3 |  | Making Sense with Sam Harris | Sam Harris | |
| 16 | 2 |  | BBC Inside Science | BBC Radio 4 | |
| 17 | 47 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 18 | 2 |  | Discovery | BBC World Service | |
| 19 | 2 |  | CrowdScience | BBC World Service | |
| 20 | 12 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 21 | 8 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 22 | 5 | K | K9 Conservationists | Kayla Fratt | |
| 23 | 124 | S | Surgical Hot Topics | Unknown | |
| 24 | 23 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 25 | 7 |  | The Weirdest Thing I Learned This Week | Popular Science | |
| 26 | 142 |  | Songs 4 FRCR: Radiology FRCR 2A Revision | FRCR Revision | |
| 27 | 3 |  | Dr. Chapa’s OBGYN Clinical Pearls | Dr. Chapa’s Clinical Pearls | |
| 28 | 5 |  | ScienceStuff | iHeartPodcasts | |
| 29 | 10 |  | Overheard at National Geographic | National Geographic | |
| 30 | 4 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 31 | — | T | The Water Scientists | KWR Water Research Institute | |
| 32 | — |  | Brave New World | Evening Standard | |
| 33 | 13 | P | Power In Excellence | Dr John | |
| 34 | — |  | For Water For Life | JoJo | |
| 35 | 5 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 36 | — | P | Public Health Insight | PHI Media | |
| 37 | 6 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 38 | — | U | Urban Radar | Tom Goodfellow and Beth Perry | |
| 39 | — | W | WCS Wild Audio | Wildlife Conservation Society | |
| 40 | — |  | Wissen Weekly | Spotify Studios | |
| 41 | — | T | The Qualitative Open Mic | quahrc | |
| 42 | — | C | CrowdScience | BBC World Service | |
| 43 | 18 | S | Students of Surgery | Martin Brand | |
| 44 | 11 | A | AfroPop Music 4 D Soul | BlackBoiAmazing | |
| 45 | 18 |  | The Michael Shermer Show | Michael Shermer | |
| 46 | 2 |  | Into the Impossible With Brian Keating | Big Bang Productions Inc. | |
| 47 | 13 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 48 | 50 |  | Science Friday | Science Friday and WNYC Studios | |
| 49 | 21 |  | The Psychology Podcast | iHeartPodcasts | |
| 50 | 20 | F | Forschung aktuell | Deutschlandfunk | |
| 51 | 18 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 52 | 16 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 53 | 7 |  | Instant Genius | Our Media | |
| 54 | 25 |  | Speaking of Psychology | American Psychological Association | |
| 55 | 17 |  | Astronomy Cast | Fraser Cain and Dr. Pamela Gay | |
| 56 | 25 | T | This Wild Life Conservation Podcast | Amy Turner | |
| 57 | 23 |  | Science Vs | Spotify Studios | |
| 58 | 23 |  | Meet the Farmers | Ben Eagle, RuralPod Media | |
| 59 | 3 |  | The Sociology of Everything Podcast | Eric Hsu & Louis Everuss (Lou & the Hsu) | |
| 60 | 23 |  | Chemistry Made Simple | Matthew Macariou | |
| 61 | 22 | S | Stanford Psychology Podcast | Stanford Psychology | |
| 62 | 19 |  | Universe Today Podcast | Fraser Cain | |
| 63 | 22 |  | Deep Insights with Mining Review Africa | Mining Review Africa | |
| 64 | 14 |  | In Defense of Plants Podcast | In Defense of Plants | |
| 65 | 20 | G | Guardians of the River | Wild Bird Trust, NGOWP, House of Pod | |
| 66 | 1 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 67 | 4 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 68 | 14 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 69 | 128 |  | Dr Karl Podcast | triplej | |
| 70 | 22 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 71 | 19 | P | PsychCrunch | The British Psychological Society Research Digest | |
| 72 | 19 | P | PsyberSpace: Understand Your World | Leslie Poston | |
| 73 | 10 |  | Curious Cases | BBC Radio 4 | |
| 74 | 19 |  | Dope Labs | iHeartPodcasts | |
| 75 | 18 | B | Bangor Sport Science | Kevin Williams | |
| 76 | 18 |  | 6 Ranch Podcast | James Nash | |
| 77 | 18 | T | The Integration Station | Michael Crisci, Eleanor White | |
| 78 | 18 | O | Oil & Gas Journal ReEnterprised | Endeavor Business Media | |
| 79 | 18 | T | Transformation Horizon | Judy Oyedele & Sasha Farley | |
| 80 | 18 | E | Everything Energy: 2021 | International Energy Agency | |
| 81 | 9 | T | The Birding Life Podcast Network | The Birding Life Podcast Network | |
| 82 | 33 |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 83 | 15 |  | New Books in Critical Theory | Marshall Poe | |
| 84 | 9 |  | Science Talk | Scientific American | |
| 85 | 18 |  | The Orthobullets Podcast | Orthobullets | |
| 86 | 8 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 87 | 36 |  | Relebogile Mabotja hosts The Naked Scientist | Radio 702 | |
| 88 | — |  | Science In Action | BBC World Service | |
| 89 | 23 |  | This Week in Cardiology | Medscape | |
| 90 | 16 |  | Blurry Creatures | Blurry Creatures | |
| 91 | 8 |  | All In The Mind | ABC | |
| 92 | 15 |  | WEAPONIZED with Jeremy Corbell & George Knapp | Jeremy Corbell and George Knapp | |
| 93 | — | T | The Case for Conservation Podcast | www.case4conservation.com | |
| 94 | 24 | T | The Human Behavior Podcast | The Human Behavior Podcast | |
| 95 | 18 |  | Science Quickly | Scientific American | |
| 96 | 23 |  | Naturebang | BBC Radio 4 | |
| 97 | 21 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 98 | 19 |  | The Science of Everything Podcast | James Fodor | |
| 99 | 15 |  | TED Talks Science and Medicine | TED | |
| 100 | 74 |  | The 365 Days of Astronomy | 365DaysOfAstronomy.org | |
