| 1 | — |  | That's Just Wild | Fresh Air | |
| 2 | 1 |  | Curious Cases | BBC Radio 4 | |
| 3 | 1 |  | More or Less | BBC Radio 4 | |
| 4 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 5 | 3 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 6 | 5 |  | The world, the universe and us | New Scientist | |
| 7 | — |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 8 | 3 | M | Making Science with Tom Whipple | The Times | |
| 9 | 3 |  | Making Sense with Sam Harris | Sam Harris | |
| 10 | — |  | StarTalk Radio | Neil deGrasse Tyson | |
| 11 | 5 |  | Radiolab | WNYC Studios | |
| 12 | — |  | Ologies with Alie Ward | Alie Ward | |
| 13 | — | W | Why? with Emma Kennedy | Podmasters | |
| 14 | 5 |  | Science Weekly | The Guardian | |
| 15 | 1 |  | BBC Inside Science | BBC Radio 4 | |
| 16 | 1 |  | The Life Scientific | BBC Radio 4 | |
| 17 | — |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 18 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 19 | 6 |  | Rare Earth | BBC Radio 4 | |
| 20 | 1 | N | New Scientist Weekly | New Scientist | |
| 21 | 22 |  | Mythfits | Pionaire Podcasting | |
| 22 | 3 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 23 | 3 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 24 | 4 |  | The Plodcast | Our Media | |
| 25 | 3 |  | Hard Drugs | Saloni Dattani & Jacob Trefethen | |
| 26 | 14 | W | Wild Tales | Nature Podcast | National Trust | |
| 27 | — |  | Oceans: Life Under Water | Crowd Network | Greenpeace UK | |
| 28 | — |  | The Naked Scientists Podcast | The Naked Scientists | |
| 29 | 6 | F | Farming Today | BBC Radio 4 | |
| 30 | 6 |  | Rewilding the World with Ben Goldsmith | Ben Goldsmith | |
| 31 | — |  | The Psychology Podcast | iHeartPodcasts | |
| 32 | 56 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 33 | 26 |  | CrowdScience | BBC World Service | |
| 34 | 5 |  | WEAPONIZED with Jeremy Corbell & George Knapp | Jeremy Corbell and George Knapp | |
| 35 | 11 |  | Science Vs | Spotify Studios | |
| 36 | 2 | E | Everything's Psychology | Paul Davies | |
| 37 | 3 |  | That UFO Podcast | That UFO Podcast | |
| 38 | 5 |  | Overheard at National Geographic | National Geographic | |
| 39 | 8 |  | When Science Finds a Way | Wellcome | |
| 40 | 8 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 41 | 50 |  | Alive Again | iHeartPodcasts | |
| 42 | 14 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 43 | 11 |  | Instant Genius | Our Media | |
| 44 | 117 | S | Screen Sense: Parenting in a Digital World | Pete Etchells and Andy Przybylski | |
| 45 | 7 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 46 | 3 |  | Discovery | BBC World Service | |
| 47 | 3 |  | Speaking of Psychology | American Psychological Association | |
| 48 | 2 |  | Naturebang | BBC Radio 4 | |
| 49 | 8 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 50 | 11 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 51 | 14 |  | Scotland Outdoors | BBC Radio Scotland | |
| 52 | 7 | O | Open Country | BBC Radio 4 | |
| 53 | 17 |  | Let's Learn Everything! | Maximum Fun | |
| 54 | 9 |  | New Books in Critical Theory | Marshall Poe | |
| 55 | 13 |  | A Life More Wild | Canopy & Stars | |
| 56 | 12 | T | The Artificial Human | BBC Radio 4 | |
| 57 | 14 |  | Unexpected Elements | BBC World Service | |
| 58 | 28 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 59 | 29 |  | Science In Action | BBC World Service | |
| 60 | 25 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 61 | 6 |  | The Science of Birds | Ivan Phillipsen | |
| 62 | 11 |  | Unexplainable | Vox | |
| 63 | 15 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 64 | — |  | Universe Today Podcast | Fraser Cain | |
| 65 | 12 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 66 | 11 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 67 | 6 |  | UAP Unidentified Alien Podcast | Gamut Podcast Network | |
| 68 | 1 |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 69 | 4 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 70 | 2 |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 71 | 3 |  | Into the Impossible With Brian Keating | Big Bang Productions Inc. | |
| 72 | 4 |  | All In The Mind | ABC | |
| 73 | 20 |  | The Energy Podcast | Shell | |
| 74 | 124 |  | Your Brain On | Drs. Ayesha and Dean Sherzai | |
| 75 | 15 |  | Paranormal Mysteries | Nic Ryan | Paranormal Mysteries Podcast | |
| 76 | 11 | C | Chris Skinner's Countryside Podcasts | High Ash Farm | |
| 77 | 17 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 78 | 5 |  | Mysterious Universe | 8th Kind | |
| 79 | 4 |  | TED Talks Science and Medicine | TED | |
| 80 | 28 | T | The Knepp Wilding Podcast | Knepp.co.uk | |
| 81 | 23 | T | The We Society | AcSS | |
| 82 | 20 |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 83 | 74 | E | Economics In Ten | Economics In Ten | |
| 84 | 38 |  | Stanford Psychology Podcast | Stanford Psychology | |
| 85 | 33 |  | Why Do We Do That? | BBC Radio 4 | |
| 86 | 45 |  | Origin Stories | The Leakey Foundation | |
| 87 | — |  | Planet Possible | CIWEM | |
| 88 | 17 |  | 5 Live Science Podcast | BBC Radio 5 Live | |
| 89 | 20 | O | Our Ocean | Seaful | Cal Major | |
| 90 | 10 |  | Others From Another Mother | Dan Cleary and Chad Shlosser | |
| 91 | 10 | W | Waterlands | Wildfowl & Wetlands Trust | |
| 92 | 32 |  | Geology Bites | Oliver Strimpel | |
| 93 | 59 |  | The Hamilton Morris Podcast | Hamilton Morris | |
| 94 | 10 |  | The Common Descent Podcast | Common Descent | |
| 95 | 29 |  | Accidental Gods | Accidental Gods | |
| 96 | 14 |  | The Climate Question | BBC World Service | |
| 97 | 24 |  | How We're Wired | The Bertarelli Foundation | |
| 98 | 3 |  | Science Fictions | Tom Chivers and Stuart Ritchie | |
| 99 | 26 |  | Expanded Perspectives | Expanded Perspectives | |
| 100 | 6 |  | The Astrophysics Podcast | Paul Duffell | |
