| 1 | — |  | Unexplainable | Vox | |
| 2 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 3 | — |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 4 | 3 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 5 | 4 |  | Radiolab | WNYC Studios | |
| 6 | 2 |  | Ologies with Alie Ward | Alie Ward | |
| 7 | 2 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 8 | 2 |  | Making Sense with Sam Harris | Sam Harris | |
| 9 | 5 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 10 | 1 |  | BBC Inside Science | BBC Radio 4 | |
| 11 | 1 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 12 | 14 |  | More or Less | BBC Radio 4 | |
| 13 | 3 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 14 | 6 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 15 | 59 |  | CrowdScience | BBC World Service | |
| 16 | 5 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 17 | 18 |  | The Orthobullets Podcast | Orthobullets | |
| 18 | 31 |  | This Week in Virology | Vincent Racaniello | |
| 19 | 20 |  | Nature Insight: Speed Dating with the Future | IPBES | |
| 20 | 6 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 21 | 9 |  | DNA Today: A Genetics Podcast | Kira Dineen, Gene Pool Media | |
| 22 | 5 |  | Science In Action | BBC World Service | |
| 23 | 129 |  | All In The Mind | ABC | |
| 24 | 9 | S | Students of Surgery | Martin Brand | |
| 25 | 78 |  | How We're Wired | The Bertarelli Foundation | |
| 26 | 13 |  | Science Weekly | The Guardian | |
| 27 | 5 |  | Discovery | BBC World Service | |
| 28 | 10 |  | Living Planet | DW | |
| 29 | — |  | Science Friday | Science Friday and WNYC Studios | |
| 30 | 1 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 31 | 15 |  | The Origins Podcast with Lawrence Krauss | Lawrence M. Krauss | |
| 32 | 121 |  | EverydaySpy Podcast | Andrew Bustamante | |
| 33 | 152 |  | The Confessionals | Merkel Media | |
| 34 | 15 |  | Your Brain On | Drs. Ayesha and Dean Sherzai | |
| 35 | — | L | Let's Talk Micro | Luis Plaza | |
| 36 | 120 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 37 | — | S | Stimulating Stuff | Rich Vogel | |
| 38 | — |  | Why Do We Do That? | BBC Radio 4 | |
| 39 | — | T | The Human Risk Podcast | Human Risk | |
| 40 | — |  | Climate One | Climate One from The Commonwealth Club | |
| 41 | 19 |  | Crime Pays But Botany Doesn't | Tony Santore | |
| 42 | — |  | Bedtime Astronomy | Synthetic Universe | |
| 43 | — |  | Infectious Disease Puscast | Vincent Racaniello | |
| 44 | — |  | COMPLEXITY | Santa Fe Institute | |
| 45 | — | P | People Behind the Science Podcast Stories from Scientists about Science, Life, Research, and Science Careers | Dr. Marie McNeely, featuring top scientists speaking about their life and c | |
| 46 | — | H | Human Action: A Treatise on Economics | Ludwig von Mises | |
| 47 | — | N | Nouvelle Conscience | Manon Sala | |
| 48 | — | P | Presbyopia Unlocked | Eyetube | |
| 49 | — |  | Facts Machine | Facts Machine | |
| 50 | 37 | M | Mike's Multiverse | Mike McHargue | |
| 51 | 28 | C | Conversations in Drug Development | Boyds | |
| 52 | 18 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 53 | 29 |  | Naturebang | BBC Radio 4 | |
| 54 | 19 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 55 | 22 |  | Speaking of Psychology | American Psychological Association | |
| 56 | 28 |  | Science Vs | Spotify Studios | |
| 57 | 27 |  | Mysterious Universe | 8th Kind | |
| 58 | 7 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 59 | 25 |  | Unexpected Elements | BBC World Service | |
| 60 | 81 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 61 | 20 |  | 5 Live Science Podcast | BBC Radio 5 Live | |
| 62 | 24 |  | Speed & Scale | TED | |
| 63 | 36 |  | Rewilding the World with Ben Goldsmith | Ben Goldsmith | |
| 64 | 3 |  | Curious Cases | BBC Radio 4 | |
| 65 | 23 |  | This Week in Cardiology | Medscape | |
| 66 | 22 |  | Skeptoid | Brian Dunning | |
| 67 | 15 |  | Origin Stories | The Leakey Foundation | |
| 68 | 11 |  | Regenerative Agriculture Podcast | John Kempf | |
| 69 | 32 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 70 | 34 |  | The Wild with Chris Morgan | KUOW News and Information | |
| 71 | 31 | T | The Birding Life Podcast Network | The Birding Life Podcast Network | |
| 72 | 29 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 73 | 17 |  | This Week in Virology | Vincent Racaniello | |
| 74 | 19 |  | Podcast UFO | Martin Willis | |
| 75 | 3 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 76 | 51 | ![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 | |
| 77 | 30 | N | New Books in Sex, Sexuality, and Sex Work | New Books Network | |
| 78 | 31 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 79 | 29 | W | Why? with Emma Kennedy | Podmasters | |
| 80 | 32 | W | When We Talk About Animals | Law, Environment & Animals Program at Yale Law School | |
| 81 | 30 |  | In Defense of Plants Podcast | In Defense of Plants | |
| 82 | 29 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 83 | 29 |  | Rare Earth | BBC Radio 4 | |
| 84 | 26 | B | Biodiversity Speaks | IBioS Collaboratory | |
| 85 | 28 |  | The Social Work Podcast | Jonathan B. Singer, Ph.D., LCSW | |
| 86 | 27 | B | BJA: British Journal of Anaesthesia | Rik Thomas, Podcast Editor | |
| 87 | 27 | T | The Stem Cell Report with Martin Pera | ISSCR | |
| 88 | 27 | E | Everything Epigenetics | Hannah Went | |
| 89 | 27 | T | The PrimateCast | Andrew MacIntosh | |
| 90 | 27 | T | The Stem Cell Podcast | The Stem Cell Podcast | |
| 91 | 46 |  | Robert Sapolsky | Father-Offspring Interviews | Robert Sapolsky | |
| 92 | 26 |  | The Future of Everything | Stanford Engineering | |
| 93 | 22 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 94 | 26 |  | The Climate Question | BBC World Service | |
| 95 | 18 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 96 | 32 |  | What Remains | WRAL News | Raleigh, North Carolina | |
| 97 | 3 |  | The Psychology Podcast | iHeartPodcasts | |
| 98 | — |  | Houston We Have a Podcast | National Aeronautics and Space Administration (NASA) | |
| 99 | 21 |  | Short Wave | NPR | |
| 100 | 3 | B | BIOL 221- Microbiology - eb | Dr. Earl Beyer | |
