| 1 | — |  | You Are Not So Smart | You Are Not So Smart | |
| 3 | 2 |  | Instant Genius | Our Media | |
| 6 | 1 |  | Radiolab | WNYC Studios | |
| 7 | 1 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 8 | 2 | I | Ideas of India | Mercatus Center at George Mason University | |
| 11 | 11 |  | Making Sense with Sam Harris | Sam Harris | |
| 12 | 16 |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 13 | 3 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 15 | 9 |  | The Psychology Podcast | iHeartPodcasts | |
| 16 | 2 |  | Curious Cases | BBC Radio 4 | |
| 17 | 6 |  | Ologies with Alie Ward | Alie Ward | |
| 18 | 5 |  | Discovery | BBC World Service | |
| 19 | 1 |  | Speaking of Psychology | American Psychological Association | |
| 20 | 5 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 21 | 80 |  | EarthWise | Vivaan Mathur | |
| 22 | 1 | S | Sher Khan | Aaj Tak Radio | |
| 25 | 7 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 27 | 26 |  | Science Quickly | Scientific American | |
| 28 | 11 |  | The Quanta Podcast | Quanta Magazine | |
| 30 | 132 |  | Mysterious Universe | 8th Kind | |
| 31 | 11 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 32 | 124 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 35 | 14 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 36 | 105 |  | All Creatures Podcast | All Creatures Podcast | |
| 37 | 12 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 38 | — |  | Sustainability, Climate Change, Renewable Energy, Politics, Activism, Biodiversity, Carbon Footprint, Wildlife, Regenerative | Mia Funk | |
| 39 | — | G | GoGreenGuru: Sustainability in Action | Ananya Guru Sangameshwar | |
| 42 | — |  | The Nature Of with Willow Defebaugh | Atmos | |
| 43 | — |  | Naturebang | BBC Radio 4 | |
| 46 | 3 |  | BBC Inside Science | BBC Radio 4 | |
| 47 | 7 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 48 | 32 |  | Science In Action | BBC World Service | |
| 49 | 35 |  | More or Less | BBC Radio 4 | |
| 50 | 110 |  | The Origins Podcast with Lawrence Krauss | Lawrence M. Krauss | |
| 51 | 81 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 52 | 25 |  | Materialism: A Materials Science Podcast | Taylor Sparks and Andrew Falkowski | |
| 53 | 49 |  | Science Friday | Science Friday and WNYC Studios | |
| 54 | — |  | The Future of Everything | Stanford Engineering | |
| 56 | 26 |  | Curiosity Weekly | Discovery | |
| 58 | 24 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 60 | 79 |  | The Climate Question | BBC World Service | |
| 61 | 28 |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 62 | — |  | Your Brain On | Drs. Ayesha and Dean Sherzai | |
| 63 | — | F | Feed for Thought | Pioneer Brand Products NZ | |
| 65 | — | S | Sciencekari | Lallantop Baaja | |
| 66 | — |  | This Week in Space (Video) | TWiT | |
| 68 | — |  | Believing the Bizarre: Paranormal Conspiracies & Myths | Tyler and Charlie | |
| 69 | — |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 70 | — |  | Science with Sabine | Sabine Hossenfelder | |
| 71 | — |  | This Week in Space (Audio) | TWiT | |
| 74 | — | M | Migration – Darwin College Lecture Series 2018 | Cambridge University | |
| 76 | — | E | Eat For The Planet with Nil Zacharias | Eat For The Planet | |
| 80 | 49 | F | Fresh Thinking by Snowden Optiro | Snowden Optiro | |
| 81 | — |  | Sternengeschichten | Florian Freistetter | |
| 82 | 8 |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 83 | 46 |  | Short Wave | NPR | |
| 85 | 40 |  | The Couples Therapist Couch | Shane Birkel | |
| 87 | 31 |  | Let's Learn Everything! | Maximum Fun | |
| 89 | 41 | T | The Engineering Passion Express | Brandon Donnelly | |
| 90 | — |  | American Innovations | Audible | |
| 91 | 44 |  | Science Magazine Podcast | Science Magazine | |
| 92 | 41 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 94 | 35 |  | This Week in Neuroscience | Vincent Racaniello | |
| 95 | 44 | T | The Language Neuroscience Podcast | Stephen M. Wilson | |
| 96 | 31 |  | Blurry Creatures | Blurry Creatures | |
| 99 | 53 |  | Invisibilia | NPR | |
| 100 | 48 |  | How We're Wired | The Bertarelli Foundation | |
| 102 | 52 |  | ACM ByteCast | Association for Computing Machinery (ACM) | |
| 104 | 47 | D | Dementia Dialogues | Practical Neurology | |
| 105 | 43 | M | Meet the Author from Neurology: Education | Neurology: Education | |
| 106 | 48 |  | The Sociology of Everything Podcast | Eric Hsu & Louis Everuss (Lou & the Hsu) | |
| 108 | 43 | N | Naked Neuroscience, from the Naked Scientists | James Tytko | |
| 109 | 48 |  | Geladen - der Batteriepodcast zur Energiewende | Daniel Messling, Patrick von Rosen | |
| 111 | 43 | M | Modern Physics: General Theory of Relativity (Fall 2012) | Stanford Continuing Studies | |
| 112 | 46 | R | RCOG | Royal College of Obstetricians and Gynaecologists | |
| 116 | 44 |  | Accidental Gods | Accidental Gods | |
| 117 | 44 | D | DiabetesBio | American Diabetes Association | |
| 120 | 44 |  | Diabetes Care "On Air" | American Diabetes Association | |
| 121 | 44 | U | UpToDate Talk | UpToDate | |
| 124 | 42 |  | The Astrophysics Podcast | Paul Duffell | |
| 125 | 42 |  | All In The Mind | ABC | |
| 127 | 64 |  | Real Ghost Stories Online | Real Ghost Stories Online | Paranormal, Supernatural & Horror Radio | |
| 128 | 28 |  | Statistics Made Simple | Brad R. Fulton, PhD | |
| 129 | — |  | A Life More Wild | Canopy & Stars | |
| 130 | 45 |  | Paranormal Portal | Brent Thomas | |
| 131 | 4 |  | Great Mysteries of Physics | The Conversation | |
| 132 | 25 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 133 | 35 |  | Houston We Have a Podcast | National Aeronautics and Space Administration (NASA) | |
| 134 | 53 | R | RadioGraphics Podcast | RSNA | Radiological Society of North America (RSNA) | |
| 137 | 48 |  | Choiceology with Katy Milkman | Charles Schwab | |
| 139 | 43 |  | Physics World Weekly Podcast | Physics World | |
| 140 | — |  | The Episodic Table of Elements | T. R. Appleton | |
| 142 | 45 |  | The Medbullets Step 2 & 3 Podcast | Medbullets | |
| 143 | 50 |  | From Concept to Medicine - A Comprehensive Drug Development Journey | Jim Mitchell | |
| 144 | 50 |  | BioCentury This Week | BioCentury | |
| 145 | 46 |  | Manifold | Steve Hsu | |
| 146 | 36 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 148 | 43 | T | The ConcertAI Podcast | ConcertAI | |
| 149 | 42 |  | Night Science | Itai Yanai & Martin Lercher | |
| 150 | 42 | P | Pharmaceutical Executive | Pharmaceutical Executive Podcast | |
