| 1 | — |  | Unexplainable | Vox | |
| 2 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 3 | 3 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 4 | 3 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 5 | 2 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 6 | 2 |  | Making Sense with Sam Harris | Sam Harris | |
| 7 | 4 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 8 | 3 |  | Ologies with Alie Ward | Alie Ward | |
| 9 | — |  | Radiolab | WNYC Studios | |
| 10 | — |  | The Naked Scientists Podcast | The Naked Scientists | |
| 11 | 36 |  | BBC Inside Science | BBC Radio 4 | |
| 12 | 32 |  | DNA Today: A Genetics Podcast | Kira Dineen, Gene Pool Media | |
| 13 | 5 |  | Science Weekly | The Guardian | |
| 14 | 60 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 15 | 1 | S | Students of Surgery | Martin Brand | |
| 16 | 150 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 17 | 1 |  | Science In Action | BBC World Service | |
| 18 | 8 |  | Living Planet | DW | |
| 19 | 6 |  | Your Brain On | Drs. Ayesha and Dean Sherzai | |
| 20 | 8 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 21 | 2 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 22 | 15 |  | Crime Pays But Botany Doesn't | Tony Santore | |
| 23 | 32 | C | Conversations in Drug Development | Boyds | |
| 24 | 38 |  | Naturebang | BBC Radio 4 | |
| 25 | 2 | ![Cosmosis [Formerly The UFO Rabbit Hole]](https://is1-ssl.mzstatic.com/image/thumb/Podcasts211/v4/6e/50/4f/6e504f3a-5967-0f9a-1858-77a5f070b7d4/mza_10360255510263335732.jpeg/100x100bb.jpg) | Cosmosis [Formerly The UFO Rabbit Hole] | Kelly Chase & Jay Christopher King | |
| 26 | 13 |  | More or Less | BBC Radio 4 | |
| 27 | 6 |  | Rewilding the World with Ben Goldsmith | Ben Goldsmith | |
| 28 | 14 |  | Science Vs | Spotify Studios | |
| 29 | 37 |  | Science Friday | Science Friday and WNYC Studios | |
| 30 | 17 |  | Mysterious Universe | 8th Kind | |
| 31 | 19 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 32 | 15 |  | Discovery | BBC World Service | |
| 33 | 98 |  | Speaking of Psychology | American Psychological Association | |
| 34 | 147 |  | Unexpected Elements | BBC World Service | |
| 35 | 49 |  | The Orthobullets Podcast | Orthobullets | |
| 36 | 118 |  | The Wild with Chris Morgan | KUOW News and Information | |
| 37 | 22 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 38 | 81 |  | Speed & Scale | TED | |
| 39 | 134 |  | Nature Insight: Speed Dating with the Future | IPBES | |
| 40 | 92 | T | The Birding Life Podcast Network | The Birding Life Podcast Network | |
| 41 | — |  | 5 Live Science Podcast | BBC Radio 5 Live | |
| 42 | 140 |  | This Week in Cardiology | Medscape | |
| 43 | 134 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 44 | 141 |  | Skeptoid | Brian Dunning | |
| 45 | 14 |  | Robert Sapolsky | Father-Offspring Interviews | Robert Sapolsky | |
| 46 | — |  | The Origins Podcast with Lawrence Krauss | Lawrence M. Krauss | |
| 47 | — | N | New Books in Sex, Sexuality, and Sex Work | New Books Network | |
| 48 | — | W | When We Talk About Animals | Law, Environment & Animals Program at Yale Law School | |
| 49 | 29 |  | This Week in Virology | Vincent Racaniello | |
| 50 | — | W | Why? with Emma Kennedy | Podmasters | |
| 51 | — |  | In Defense of Plants Podcast | In Defense of Plants | |
| 52 | — |  | Origin Stories | The Leakey Foundation | |
| 53 | — |  | Stanford Psychology Podcast | Stanford Psychology | |
| 54 | — |  | Rare Earth | BBC Radio 4 | |
| 55 | — |  | Podcast UFO | Martin Willis | |
| 56 | — |  | This Week in Virology | Vincent Racaniello | |
| 57 | — |  | The Social Work Podcast | Jonathan B. Singer, Ph.D., LCSW | |
| 58 | — | B | Biodiversity Speaks | IBioS Collaboratory | |
| 59 | — | B | BJA: British Journal of Anaesthesia | Rik Thomas, Podcast Editor | |
| 60 | — | T | The Stem Cell Report with Martin Pera | ISSCR | |
| 61 | — | E | Everything Epigenetics | Hannah Went | |
| 62 | — | T | The PrimateCast | Andrew MacIntosh | |
| 63 | — | T | The Stem Cell Podcast | The Stem Cell Podcast | |
| 64 | 19 |  | What Remains | WRAL News | Raleigh, North Carolina | |
| 65 | 36 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 66 | 43 |  | The Future of Everything | Stanford Engineering | |
| 67 | 4 |  | Curious Cases | BBC Radio 4 | |
| 68 | 44 |  | The Climate Question | BBC World Service | |
| 69 | 47 |  | Blurry Creatures | Blurry Creatures | |
| 70 | 9 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 71 | 58 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 72 | 39 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 73 | 43 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 74 | 70 |  | CrowdScience | BBC World Service | |
| 75 | 16 |  | Universe Today Podcast | Fraser Cain | |
| 76 | 44 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 77 | 41 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 78 | 38 |  | Short Wave | NPR | |
| 79 | 45 |  | Regenerative Agriculture Podcast | John Kempf | |
| 80 | 47 |  | Wild Times: Wildlife Education | Wildlife Educator - Forrest Galante | |
| 81 | 22 | I | IBMS Podcast | #IBMSChat Podcast | |
| 82 | 28 |  | The Market Gardener Podcast | JM Fortier | |
| 83 | 42 | P | Pharmacology Basics | Instructor Gwin | |
| 84 | 42 |  | Hillbilly Horror Stories Paranormal Podcast | Jerry Paulley | |
| 85 | 39 | T | The We Society | AcSS | |
| 86 | 43 |  | SASQUATCH THEORY | SASQUATCH THEORY | |
| 87 | 30 | M | Mike's Multiverse | Mike McHargue | |
| 88 | — |  | Chemistry Made Simple | Matthew Macariou | |
| 89 | 28 |  | BrainStuff | iHeartPodcasts | |
| 90 | 42 |  | Naked Astronomy, from the Naked Scientists | The Naked Scientists | |
| 91 | 42 |  | The 365 Days of Astronomy | 365DaysOfAstronomy.org | |
| 92 | 42 | P | Pediatric Anesthesia Podcast | Pediatric Anesthesia | |
| 93 | 42 | T | The Urban Astronomer Podcast | The Urban Astronomer Podcast | |
| 94 | 42 |  | Behavioral Grooves Podcast | Kurt Nelson, PhD and Tim Houlihan | |
| 95 | 42 | I | I AM BIO | Biotechnology Innovation Organization | |
| 96 | 40 | N | Not So Random Facts | Storyteller Entertainment | |
| 97 | 39 | B | BIOL 221- Microbiology - eb | Dr. Earl Beyer | |
| 98 | 12 |  | Houston We Have a Podcast | National Aeronautics and Space Administration (NASA) | |
| 99 | 18 |  | Why This Universe? | Dan Hooper, Shalma Wegsman | |
| 100 | 40 |  | The Psychology Podcast | iHeartPodcasts | |
