| 1 | 8 |  | Making Sense with Sam Harris | Sam Harris | |
| 2 | — |  | StarTalk Radio | Neil deGrasse Tyson | |
| 3 | 2 |  | Unexplainable | Vox | |
| 4 | — |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 5 | 2 |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 6 | 1 |  | Ologies with Alie Ward | Alie Ward | |
| 7 | 1 |  | Science Vs | Spotify Studios | |
| 8 | 6 |  | Curious Cases | BBC Radio 4 | |
| 9 | 2 |  | Radiolab | WNYC Studios | |
| 10 | — |  | The Naked Scientists Podcast | The Naked Scientists | |
| 11 | 3 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 12 | 4 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 13 | 2 |  | More or Less | BBC Radio 4 | |
| 14 | 10 |  | Nature Podcast | Springer Nature Limited | |
| 15 | 3 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 16 | 5 | M | Mathematics Simplified | Anjali Sharma | |
| 17 | 9 |  | The Nature Of with Willow Defebaugh | Atmos | |
| 18 | — | L | Let's Talk Micro | Luis Plaza | |
| 19 | 1 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 20 | 19 |  | Therapist Uncensored Podcast | Sue Marriott LCSW, CGP & Ann Kelley PhD | |
| 21 | 9 |  | ScienceStuff | iHeartPodcasts | |
| 22 | 9 |  | Speaking of Psychology | American Psychological Association | |
| 23 | 10 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 24 | 2 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 25 | 56 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 26 | 7 |  | Living Planet | DW | |
| 27 | — |  | Multiverse 5D @ M5D | Multiverse 5D Network | |
| 28 | — | T | The Best of Making Sense with Sam Harris | Sam Harris | |
| 29 | 14 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 30 | 90 | P | Physics World Stories Podcast | Physics World | |
| 31 | 14 |  | The Science of Everything Podcast | James Fodor | |
| 32 | — | T | The Root Of The Science Podcast | Anne Chisa | |
| 33 | — |  | The Climate Question | BBC World Service | |
| 34 | — |  | The Quanta Podcast | Quanta Magazine | |
| 35 | — |  | Unravelling the Universe℠ | Ben (host) and Harmonie (behind the scenes) | |
| 36 | — |  | Green Dreamer: Seeding change towards collective healing, sustainability, regeneration | kaméa chayne | |
| 37 | — | N | Neon Galactic with James Faulk | James Faulk and KEET-TV | |
| 38 | — | E | Equine Med On The Go | Sacha Brévault et Angélique Hayot | |
| 39 | 16 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 40 | 18 |  | Overheard at National Geographic | National Geographic | |
| 41 | 6 |  | The world, the universe and us | New Scientist | |
| 42 | 13 |  | The Psychology Podcast | iHeartPodcasts | |
| 43 | 10 |  | Science Friday | Science Friday and WNYC Studios | |
| 44 | 4 |  | BBC Inside Science | BBC Radio 4 | |
| 45 | 20 |  | Psychiatry & Psychotherapy Podcast | David Puder, M.D. | |
| 46 | 18 |  | The Future of Everything | Stanford Engineering | |
| 47 | 40 |  | New Books in Critical Theory | Marshall Poe | |
| 48 | 17 |  | The Michael Shermer Show | Michael Shermer | |
| 49 | 8 | S | Students of Surgery | Martin Brand | |
| 50 | 23 |  | Blurry Creatures | Blurry Creatures | |
| 51 | 21 |  | When Science Finds a Way | Wellcome | |
| 52 | 16 |  | Decouple | Dr. Chris Keefer | |
| 53 | 80 |  | CrowdScience | BBC World Service | |
| 54 | 17 |  | Outrage + Optimism: The Climate Podcast | Persephonica and Global Optimism | |
| 55 | 23 | A | Authentic Biochemistry | Dr Daniel J. Guerra | |
| 56 | 22 | L | La Terre au carré | France Inter | |
| 57 | 17 | G | Guardians of the River | Wild Bird Trust, NGOWP, House of Pod | |
| 58 | 20 |  | The Answer Is Transaction Costs | Michael Munger | |
| 59 | 18 | P | Purr Podcast | Jolle Kirpensteijn & Susan Little | |
| 60 | 18 |  | IFLScience - The Big Questions | IFLScience | |
| 61 | 18 | H | How To Protect The Ocean | Andrew Lewin | |
| 62 | 18 | T | The Animal Heartbeat | Kieran Borgeat and Jose Novo Matos | |
| 63 | 18 | V | Veterinary Vertex | AVMA Journals | |
| 64 | 18 | T | The BioWorld Insider Podcast | BioWorld | |
| 65 | 14 |  | Safety Third | Safety Third | |
| 66 | 85 |  | Paranormal Mysteries | Nic Ryan | Paranormal Mysteries Podcast | |
| 67 | 12 |  | BirdNote Daily | BirdNote | |
| 68 | 6 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 69 | 17 |  | Ancient Aliens | PodcastOne | |
| 70 | 19 |  | Nephilim Death Squad | TopLobsta Productions | |
| 71 | 22 |  | Into the Impossible With Brian Keating | Big Bang Productions Inc. | |
| 72 | 22 | A | Ask the Naked Scientists | Dr Chris Smith | |
| 73 | 10 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 74 | 11 |  | Inner Cosmos with David Eagleman | iHeartPodcasts | |
| 75 | 19 |  | The Great Simplification with Nate Hagens | Nate Hagens | |
| 76 | 11 |  | All In The Mind | ABC | |
| 77 | 2 | A | AfroPop Music 4 D Soul | BlackBoiAmazing | |
| 78 | 10 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 79 | — |  | This Week in Virology | Vincent Racaniello | |
| 80 | 20 |  | Science Magazine Podcast | Science Magazine | |
| 81 | 34 |  | Science Weekly | The Guardian | |
| 82 | 23 |  | The Science of Happiness | PRX and Greater Good Science Center | |
| 83 | 29 |  | CREOGs Over Coffee | CREOGs Over Coffee | |
| 84 | 18 |  | Nature Guys | Nature Guys | |
| 85 | 24 |  | Up From Dust | KCUR Studios | |
| 86 | 22 |  | People Who Read People: A Behavior and Psychology Podcast | Zachary Elwood | |
| 87 | 16 | T | The We Society | AcSS | |
| 88 | 16 |  | Great Mysteries of Physics | The Conversation | |
| 89 | 15 | T | The Addiction Psychologist | Samuel Acuff and Noah Emery | |
| 90 | 15 | T | The Neuro Clinic | Ingram Wright | |
| 91 | 18 | W | Whales | Quiet. Please | |
| 92 | 3 |  | Real Ghost Stories Online | Real Ghost Stories Online | Paranormal, Supernatural & Horror Radio | |
| 93 | 3 |  | Freakonomics, M.D. | Freakonomics Radio + Stitcher | |
| 94 | 79 | T | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 95 | 26 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 96 | 19 |  | Universe Today Podcast | Fraser Cain | |
| 97 | 7 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 98 | 10 |  | TheThinkingAtheist | The Thinking Atheist | |
| 99 | 84 |  | SciShow Tangents | Complexly | |
| 100 | 14 | N | Nature's a Hoot | Hawk Conservancy Trust | |
