| 1 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 2 | 3 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 3 | — |  | Ologies with Alie Ward | Alie Ward | |
| 4 | 2 |  | Radiolab | WNYC Studios | |
| 5 | 1 |  | More or Less | BBC Radio 4 | |
| 6 | 1 | N | Nature Conversations: Dr. Adam Forbes Interviews the Experts | Dr Adam Forbes | |
| 7 | 21 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 8 | — |  | Making Sense with Sam Harris | Sam Harris | |
| 9 | — | G | Goodfellow Unit | The Goodfellow Unit (University of Auckland) | |
| 10 | 6 |  | Science Weekly | The Guardian | |
| 11 | 28 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 12 | 8 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 13 | 5 |  | Curious Cases | BBC Radio 4 | |
| 14 | — |  | Discovery | BBC World Service | |
| 15 | 5 |  | Science Vs | Spotify Studios | |
| 16 | 3 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 17 | 4 |  | NASA's Curious Universe | National Aeronautics and Space Administration (NASA) | |
| 18 | 6 |  | All In The Mind | ABC | |
| 19 | 7 |  | ScienceStuff | iHeartPodcasts | |
| 20 | 9 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 21 | 3 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 22 | 5 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 23 | 21 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 24 | 8 |  | Nature Podcast | Springer Nature Limited | |
| 25 | 13 |  | Unexplainable | Vox | |
| 26 | 11 |  | Wild Sounds: Kākāpō Files II | RNZ | |
| 27 | 21 |  | The Quanta Podcast | Quanta Magazine | |
| 28 | 19 |  | Where Inches Matter by Agraforum | Agraforum NZ | |
| 29 | 20 |  | Unexpected Elements | BBC World Service | |
| 30 | 5 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 31 | — | A | A Light On | A Light On | |
| 32 | 44 |  | The world, the universe and us | New Scientist | |
| 33 | 26 |  | My Big TOE by Thomas Campbell - Unifying Mind and Matter | Thomas Campbell together with the MBT Volunteers | |
| 34 | 15 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 35 | 55 |  | Every Animal Ever | Dr Cesar Puechmarin, Zach Mander | |
| 36 | 14 | B | Blazing the Trail | University of Sydney / Australian Museum / Break Thru Films | |
| 37 | 48 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 38 | — |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 39 | 63 |  | A Life More Wild | Canopy & Stars | |
| 40 | 17 |  | The Nature Of with Willow Defebaugh | Atmos | |
| 41 | 72 | H | How I Wrote This | Brett Gordon and Karen Winterich | |
| 42 | 11 |  | BBC Inside Science | BBC Radio 4 | |
| 43 | 51 |  | The Michael Shermer Show | Michael Shermer | |
| 44 | 76 |  | Mind & Life | Mind & Life Institute | |
| 45 | 18 |  | CrowdScience | BBC World Service | |
| 46 | 17 |  | The Psychology Podcast | iHeartPodcasts | |
| 47 | 6 |  | The Supermassive Podcast | The Royal Astronomical Society | |
| 48 | 2 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 49 | 14 |  | Short Wave | NPR | |
| 50 | 9 |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 51 | 18 |  | Your Brain On | Drs. Ayesha and Dean Sherzai | |
| 52 | 18 | T | The Animal Sensemaker | The Observer | |
| 53 | 10 |  | You Are Not So Smart | You Are Not So Smart | |
| 54 | — |  | Real Ghost Stories Online | Real Ghost Stories Online | Paranormal, Supernatural & Horror Radio | |
| 55 | 25 |  | Skeptics with a K | Skeptic Media Limited | |
| 56 | 24 |  | This Week in Virology | Vincent Racaniello | |
| 57 | — |  | Terrible Lizards | Iszi Lawrence and David Hone | |
| 58 | — |  | Theories of Everything with Curt Jaimungal | Theories of Everything | |
| 59 | — | W | White Coat, Black Art | CBC | |
| 60 | — |  | The Orthobullets Podcast | Orthobullets | |
| 61 | — | N | Nature News from RSPB Scotland | RSPB Scotland | |
| 62 | — |  | Crime Pays But Botany Doesn't | Tony Santore | |
| 63 | — |  | Heartbreak: A Personal and Scientific Journey | Pushkin Industries | |
| 64 | — | T | The Universe Speaks in Numbers | Faber and Faber | |
| 65 | — | M | Maths on the Move | plus.maths.org | |
| 66 | — |  | Let's Talk Chemistry- a science podcast by ChemTalk | The ChemTalk Team | |
| 67 | — |  | The Gaslit Truth | Dr. Teralyn & Therapist Jenn | |
| 68 | — | E | Environmental Insights: Conversations on policy and practice from the Harvard Environmental Economics Program | Harvard Environmental Economics Program | |
| 69 | 32 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 70 | 28 | O | Open Country | BBC Radio 4 | |
| 71 | 31 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 72 | 26 |  | People Helping Nature Podcast | Conservation Amplified | |
| 73 | 28 |  | Because Language - a podcast about linguistics, the science of language. | Daniel Midgley, Ben Ainslie, and Hedvig Skirgård | |
| 74 | 22 |  | Science In Action | BBC World Service | |
| 75 | 24 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 76 | 21 |  | 5 Live Science Podcast | BBC Radio 5 Live | |
| 77 | 19 |  | This Week in Space (Audio) | TWiT | |
| 78 | 21 |  | Robinson's Podcast | Robinson Erhardt | |
| 79 | 23 |  | Rare Earth | BBC Radio 4 | |
| 80 | 26 |  | Future Ecologies | Future Ecologies | |
| 81 | 3 | D | DOC Sounds of Science Podcast | Department of Conservation | |
| 82 | 2 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 83 | 21 |  | Multiverse 5D @ M5D | Multiverse 5D Network | |
| 84 | 9 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 85 | 6 |  | Dr Karl Podcast | triplej | |
| 86 | 26 | S | Space | BBC World Service | |
| 87 | 22 | T | The Rewild Podcast | James Shooter | |
| 88 | 16 | N | NPP BrainPod | Springer Nature | |
| 89 | 28 |  | Sensible Medicine | Sensible Medicine Authors and Editors | |
| 90 | 27 |  | Hard Truths | Ashton Forbes | |
| 91 | 27 |  | Carry the Two | IMSI | |
| 92 | 26 | R | Resilient Futures Podcast | Future Cities | |
| 93 | 26 | I | In Depth, Out Loud | The Conversation | |
| 94 | 26 | F | Food Safety Matters | Food Safety Magazine | |
| 95 | 24 |  | Casual Inference | Lucy D'Agostino McGowan and Ellie Murray | |
| 96 | 27 | T | The Force of Nature Podcast | Conan Moynihan | |
| 97 | 27 | M | My Favorite Theorem | Kevin Knudson & Evelyn Lamb | |
| 98 | 25 | F | Facing It | Jennifer Atkinson | |
| 99 | 25 | S | Science on the Menu: A Food Safety Podcast by EFSA | European Food Safety Authority (EFSA) | |
| 100 | 17 |  | Rewilding the World with Ben Goldsmith | Ben Goldsmith | |
