| 1 | — |  | Hidden Brain | Hidden Brain, Shankar Vedantam | |
| 2 | — |  | Ologies with Alie Ward | Alie Ward | |
| 3 | 2 |  | Unexplainable | Vox | |
| 4 | 2 |  | Radiolab | WNYC Studios | |
| 5 | 3 |  | The Naked Scientists Podcast | The Naked Scientists | |
| 6 | 3 |  | StarTalk Radio | Neil deGrasse Tyson | |
| 7 | 3 |  | Science Vs | Spotify Studios | |
| 8 | 1 |  | Curious Cases | BBC Radio 4 | |
| 9 | 1 |  | The Resetter Podcast with Dr. Mindy | Dr. Mindy Pelz | |
| 10 | 1 |  | Uncharted with Hannah Fry | BBC Radio 4 | |
| 11 | — |  | Making Sense with Sam Harris | Sam Harris | |
| 12 | 41 |  | Ask the Naked Scientists | Dr Chris Smith | |
| 13 | 1 |  | The Infinite Monkey Cage | BBC Radio 4 | |
| 14 | 91 |  | More or Less | BBC Radio 4 | |
| 15 | 1 |  | The Joy of Why | Steven Strogatz, Janna Levin and Quanta Magazine | |
| 16 | 7 |  | Science Friday | Science Friday and WNYC Studios | |
| 17 | — | C | CrowdScience | BBC World Service | |
| 18 | 10 |  | The Skeptics' Guide to the Universe | Dr. Steven Novella | |
| 19 | 25 |  | The world, the universe and us | New Scientist | |
| 20 | 1 |  | Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas | Sean Carroll | |
| 21 | 68 |  | SpaceTime with Stuart Gary | Stuart Gary | |
| 22 | 32 |  | ExtinctZoo | ExtinctZoo | |
| 23 | 20 |  | Rewilding the World with Ben Goldsmith | Ben Goldsmith | |
| 24 | 50 |  | CrowdScience | BBC World Service | |
| 25 | 74 |  | Into the Impossible With Brian Keating | Big Bang Productions Inc. | |
| 26 | 13 |  | Speaking of Psychology | American Psychological Association | |
| 27 | 9 |  | This Podcast Will Kill You | Exactly Right and iHeartPodcasts | |
| 28 | 33 |  | Tooth & Claw: True Stories of Animal Attacks | Wes Larson, Jeff Larson, Mike Smith | Daylight Media | |
| 29 | 26 |  | The Michael Shermer Show | Michael Shermer | |
| 30 | 20 |  | Sasquatch Chronicles | Sasquatch Chronicles - Bigfoot Encounters | |
| 31 | 81 |  | Cool Worlds Podcast | coolworldslab | |
| 32 | 16 |  | Blurry Creatures | Blurry Creatures | |
| 33 | 18 |  | Reinvent Yourself with Dr. Tara | Dr. Tara Swart Bieber | |
| 34 | 9 |  | Relebogile Mabotja hosts The Naked Scientist | Radio 702 | |
| 35 | — | M | Med School Phys | Med School Phys | |
| 36 | 105 |  | The Life Scientific | BBC Radio 4 | |
| 37 | — | S | Space | BBC World Service | |
| 38 | — |  | BrainStuff | iHeartPodcasts | |
| 39 | — |  | The Numberphile Podcast | Brady Haran | |
| 40 | — |  | Just the Zoo of Us | Ellen & Christian Weatherford | |
| 41 | — |  | Earthfiles Podcast with Linda Moulton Howe | Linda Moulton Howe | |
| 42 | — | P | Political Economy Podcast | Zoltan Pogatsa | |
| 43 | — | A | Apollo 8 Mission Audio | NASA Apollo 8 mission | |
| 44 | — | T | The GOSH Paediatrics Bioethics Podcast | GOSH Learning Academy | |
| 45 | — | T | Take Aurally | Take Aurally | |
| 46 | 25 |  | The Psychology Podcast | iHeartPodcasts | |
| 47 | 16 |  | Unexpected Elements | BBC World Service | |
| 48 | 19 |  | Google DeepMind: The Podcast | Hannah Fry | |
| 49 | 8 |  | Real Ghost Stories Online | Real Ghost Stories Online | Paranormal, Supernatural & Horror Radio | |
| 50 | 30 |  | Drilled | Pushkin Industries | |
| 51 | 29 |  | Science Weekly | The Guardian | |
| 52 | 45 |  | This Week in Cardiology | Medscape | |
| 53 | 96 |  | Dr Karl Podcast | triplej | |
| 54 | 37 |  | Daniel and Kelly’s Extraordinary Universe | iHeartPodcasts | |
| 55 | 25 | A | Ask the Naked Scientists | Dr Chris Smith | |
| 56 | 24 |  | BBC Inside Science | BBC Radio 4 | |
| 57 | 30 |  | DarkHorse Podcast | Bret Weinstein & Heather Heying | |
| 58 | 17 |  | Paranormal Mysteries | Nic Ryan | Paranormal Mysteries Podcast | |
| 59 | 26 |  | Bigfoot Society | Jeremiah Byron | |
| 60 | — |  | How We're Wired | The Bertarelli Foundation | |
| 61 | 71 |  | Something You Should Know | Mike Carruthers | OmniCast Media | |
| 62 | 38 |  | Discovery | BBC World Service | |
| 63 | 12 |  | Regenerative Agriculture Podcast | John Kempf | |
| 64 | 38 |  | Overheard at National Geographic | National Geographic | |
| 65 | 20 |  | WEAPONIZED with Jeremy Corbell & George Knapp | Jeremy Corbell and George Knapp | |
| 66 | 9 | E | Elements | BBC World Service | |
| 67 | 31 | W | What The Duck?! | ABC | |
| 68 | 22 |  | Robinson's Podcast | Robinson Erhardt | |
| 69 | 22 |  | Living Planet | DW | |
| 70 | 36 |  | Going Wild with Dr. Rae Wynn-Grant | PBS Nature | |
| 71 | 34 | P | Psychology | Yale School of Medicine | |
| 72 | 20 |  | Science In Action | BBC World Service | |
| 73 | 35 | V | VoxDev Development Economics | VoxDev.org | |
| 74 | 35 |  | Policy for the Planet | Peterson Institute for International Economics | |
| 75 | 35 | Z | Zodiac Signs, Motivation, and More! | Joshua W. M. | |
| 76 | 34 | S | Seven: Disturbing Chronicle Stories of Scary, Paranormal & Horror Tales | Seven: Disturbing Chronicle Stories of Scary, Paranormal & Horror Tales, Bleav | |
| 77 | — |  | Bigfoot Eyewitness Radio | Vic Cundiff | |
| 78 | 43 |  | Astrum Space | Astrum | |
| 79 | 28 |  | Stuff To Blow Your Mind | iHeartPodcasts | |
| 80 | 28 |  | Science Magazine Podcast | Science Magazine | |
| 81 | 2 |  | De Universiteit van Nederland Podcast | Universiteit van Nederland | |
| 82 | 33 |  | Invisibilia | NPR | |
| 83 | 35 |  | Crash Course Pods: The Universe | Crash Course Pods, Complexly | |
| 84 | 22 |  | The Medbullets Step 2 & 3 Podcast | Medbullets | |
| 85 | 41 |  | CREOGs Over Coffee | CREOGs Over Coffee | |
| 86 | 28 |  | You Are Not So Smart | You Are Not So Smart | |
| 87 | 11 | T | The Birding Life Podcast Network | The Birding Life Podcast Network | |
| 88 | 13 |  | Intelligent Design the Future | Discovery Institute | |
| 89 | 41 |  | Das Wissen | SWR | SWR | |
| 90 | 34 | E | Equine Med On The Go | Sacha Brévault et Angélique Hayot | |
| 91 | — | Z | Zimmerman en Space | Hens Zimmerman | |
| 92 | 33 |  | Accidental Gods | Accidental Gods | |
| 93 | — |  | The Science Show | ABC | |
| 94 | 16 |  | The Orthobullets Podcast | Orthobullets | |
| 95 | 18 |  | Oceans: Life Under Water | Crowd Network | Greenpeace UK | |
| 96 | — | T | The Rounds Table | Dr. John Fralick and Dr. Michael Fralick | |
| 97 | 31 |  | On Wildlife | Alex Re | |
| 98 | 35 |  | The Referral with Dr. Karan | Sony Music Entertainment | |
| 99 | 29 | W | Wild Tales | Nature Podcast | National Trust | |
| 100 | 33 | B | BJA: British Journal of Anaesthesia | Rik Thomas, Podcast Editor | |
