
SciShow Tangents
SciShow Tangents is the lightly competitive knowledge showcase from the geniuses behind the YouTube series SciShow. Every other Tuesday, join Hank Green, Ceri Riley, and Sam Schultz as they try to one-up and amaze each other with weird and funny scientific research... while not getting distracted. There will be tangents about video games, music, weird smells, surprisingly deep insights about life, and of course, poop, but it always comes back to the science.
Latest episodes

May 2, 2025 • 29min
Bonus Backlog Bonanza - Ep. 6
This bonus episode was originally posted on Patreon on August 31, 2021 titled "Poopoopeepeepedia Episode 6."Original Patreon description: Alternative name to this podcast that keeps changing: Hank's Hangover Corner! Poor guy was too hungover to be properly stumped but we hope you enjoy Hank's humble brag about his famous friends and their mysterious hangover cures.SciShow Tangents is on YouTube! Go to www.youtube.com/scishowtangents to check out this episode with the added bonus of seeing our faces! And go to https://complexly.store/collections/scishow-tangents to buy some great Tangents merch!While you're at it, check out the Tangents crew on socials:Ceri: @ceriley.bsky.social@rhinoceri on InstagramSam: @im-sam-schultz.bsky.social@im_sam_schultz on InstagramHank: @hankgreen on X

Apr 29, 2025 • 2h 51min
Summer Road Trip Compilation
Summer is just around the corner, with all its golden-hued evenings, icy-cold treats, groovy music, and winding roads laden with promises of adventure. If you're heading out on an epic summer road trip, bring this Tangents compilation along for the ride and squeeze in some learning between roadside attractions and snack stops! Episodes in this compilation: S1 E14 - The Sun, original airdate: February 12, 2019 S2 E7 - Radio, original airdate: December 24, 2019 S2 E40 - Cars, original airdate: September 8, 2020 S3 E36 - Heat, original airdate: November 2, 2021 S4 E14 - Beaches, original airdate: June 14, 2022 Sources for each episode can be found in the descriptions of the original episodes on your preferred podcasting platform. And go to https://complexly.store/collections/scishow-tangents to buy some great Tangents merch! While you're at it, check out the Tangents crew on socials: Ceri: @ceriley.bsky.social @rhinoceri on Instagram Sam: @im-sam-schultz.bsky.social @im_sam_schultz on Instagram Hank: @hankgreen on X

Apr 25, 2025 • 30min
Bonus Backlog Bonanza - Ep. 5
This bonus episode was originally posted on Patreon on July 28, 2021 titled "Poopoopeepeepedia - Episode 5."Original Patreon description: Hank faces the consequences of his bathroom humor titling by diving into the poopy waters of urine and feces!SciShow Tangents is on YouTube! Go to www.youtube.com/scishowtangents to check out this episode with the added bonus of seeing our faces! And go to https://complexly.store/collections/scishow-tangents to buy some great Tangents merch!While you're at it, check out the Tangents crew on socials:Ceri: @ceriley.bsky.social@rhinoceri on InstagramSam: @im-sam-schultz.bsky.social@im_sam_schultz on InstagramHank: @hankgreen on X

Apr 22, 2025 • 34min
Bonus Backlog Bonanza - Ep. 4
This bonus episode was originally posted on Patreon on June 30, 2021 titled "Q and Bidet - Episode 4."Original Patreon description: What popular songs does Ceri know? How stumped did she get by your science questions? Listen to this episode of Q and Bidet (I should mention Hank came up with that name all by himself) to find out!SciShow Tangents is on YouTube! Go to www.youtube.com/scishowtangents to check out this episode with the added bonus of seeing our faces! And go to https://complexly.store/collections/scishow-tangents to buy some great Tangents merch!While you're at it, check out the Tangents crew on socials:Ceri: @ceriley.bsky.social@rhinoceri on InstagramSam: @im-sam-schultz.bsky.social@im_sam_schultz on InstagramHank: @hankgreen on X

Apr 18, 2025 • 30min
Bonus Backlog Bonanza - Ep. 3
This bonus episode was originally posted on Patreon on May 28, 2021 titled "Q and Play - Episode 3!"Original Patreon description: We've named the Patreon podcast! Enjoy Sam trying to answer your science questions while Ceri and Hank give him encouraging/condescending smiles.SciShow Tangents is on YouTube! Go to www.youtube.com/scishowtangents to check out this episode with the added bonus of seeing our faces! And go to https://complexly.store/collections/scishow-tangents to buy some great Tangents merch!While you're at it, check out the Tangents crew on socials:Ceri: @ceriley.bsky.social@rhinoceri on InstagramSam: @im-sam-schultz.bsky.social@im_sam_schultz on InstagramHank: @hankgreen on X

Apr 15, 2025 • 36min
Bonus Backlog Bonanza - Ep. 2
This bonus episode was originally posted on Patreon on April 30, 2021 titled "Tangents Bonus Episode #2."Original Patreon description: Ceri and Hank answer your questions about the future of science! SciShow Tangents is on YouTube! Go to www.youtube.com/scishowtangents to check out this episode with the added bonus of seeing our faces! And go to https://complexly.store/collections/scishow-tangents to buy some great Tangents merch!While you're at it, check out the Tangents crew on socials:Ceri: @ceriley.bsky.social@rhinoceri on InstagramSam: @im-sam-schultz.bsky.social@im_sam_schultz on InstagramHank: @hankgreen on X

Apr 11, 2025 • 30min
Bonus Backlog Bonanza - Ep. 1
This bonus episode was originally posted on Patreon on March 26, 2021 titled "Tangents Bonus Episode #1!"Original Patreon description: Hank, Sam, and Ceri answer your questions! Including: What happened to Chin Coins? Is there a scientific formula to a great joke? And how do non-newtonian fluids work? Featuring a snazzy new song by the one and only, Tuna!SciShow Tangents is on YouTube! Go to www.youtube.com/scishowtangents to check out this episode with the added bonus of seeing our faces! And go to https://complexly.store/collections/scishow-tangents to buy some great Tangents merch!While you're at it, check out the Tangents crew on socials:Ceri: @ceriley.bsky.social@rhinoceri on InstagramSam: @im-sam-schultz.bsky.social@im_sam_schultz on InstagramHank: @hankgreen on X

Apr 8, 2025 • 3h 19min
Back to the Future Compilation
Stroll back in time to look ahead at the future with Tangents in this compilation of episodes investigating the science and innovations that have pushed humanity and technology ever on down the road of advancement! Episodes in this compilation:S1 E15 - Artificial Intelligence, original airdate: February 19, 2019 S2 E23 - Robots, original airdate: April 14, 2020 S4 E2 - Computers, original airdate: March 8, 2022 S4 E44 - Lasers, original airdate: February 28, 2023 S5 E29 - Machine Learning, original airdate: April 30, 2024 Sources for each episode can be found in the descriptions of the original episodes on your preferred podcasting platform. SciShow Tangents is on YouTube! Go to www.youtube.com/scishowtangents to check out this episode with the added bonus of seeing our faces! And go to https://complexly.store/collections/scishow-tangents to buy some great Tangents merch! While you're at it, check out the Tangents crew on socials: Ceri: @ceriley.bsky.social @rhinoceri on Instagram Sam: @im-sam-schultz.bsky.social @im_sam_schultz on Instagram Hank: @hankgreen on X

Mar 18, 2025 • 1h 10min
Tangents
The day has arrived- this is our very last episode of Tangents ever! So of course, we had to talk about a topic that's near and dear to our hearts forever: Tangents. Ride down memory lane with us and returning original host Stefan Chin as we reminisce, try to remember what we've learned, and still learn new stuff in an episode that's the true encapsulation of everything we love about this show. SciShow Tangents is on YouTube! Go to www.youtube.com/scishowtangents to check out this episode with the added bonus of seeing our faces! And go to https://store.dftba.com/collections/scishow-tangents to buy some great Tangents merch!While you're at it, check out the Tangents crew on Twitter: Ceri: @ceriley Sam: @im_sam_schultz Hank: @hankgreen[This or That: SciShow or Tangents or Both]Eyedrops to deliver a drug called pilocarpinehttps://nerdfighteria.info/v/ekmb6KQahuk/African crested rat with toxin-loaded furhttps://www.livescience.com/crested-rats-have-poison-fur.htmlhttps://www.npr.org/2020/11/27/938878618/for-rats-that-coat-themselves-in-poison-these-rodents-are-surprisingly-cuddlyhttps://nerdfighteria.info/v/CQAVcAJQsEM/Spleen cells creating splenunculi https://nerdfighteria.info/v/3xXyBCckWsMhttps://www.npr.org/sections/health-shots/2016/12/13/505349283/meet-the-spleen-the-strange-little-organ-that-can-multiplyhttps://pubmed.ncbi.nlm.nih.gov/27226272/Car transmission failures due to endangered species acthttps://www.nytimes.com/1975/04/17/archives/transmission-problems-in-cars-linked-to-ban-on-whale-killing.htmlhttps://magazine.washington.edu/feature/the-innovation-file-solving-a-whale-of-a-problem/https://io9.gizmodo.com/how-the-jojoba-plant-saved-the-sperm-whale-1716719552https://www.nytimes.com/1975/05/15/archives/oil-from-a-shrub-found-in-desert-may-save-the-sperm-whale.htmlhttps://www.lubesngreases.com/magazine/whale-oil-biobased-and-bygone/[The Gauntlet]Preventing snails from growing external shellshttps://www.wired.com/2010/10/snails-slugs-shell-evolution/https://www.sciencedaily.com/releases/2010/10/101011090229.htmhttps://onlinelibrary.wiley.com/doi/10.1111/j.1525-142X.2010.00433.xFemale mouse pee compound that decreases pain and increases stress in maleshttps://www.science.org/doi/10.1126/sciadv.abi9366https://www.eurekalert.org/news-releases/953803Niagara falls 1969 projecthttps://www.niagarafallsinfo.com/niagara-falls-history/niagara-falls-geology/american-dry-falls/https://slate.com/technology/2019/05/niagara-falls-june-1969-dewatering.htmlhttps://m.ammoth.us/blog/2010/03/absent-rivers-ephemeral-parks/Wolf puppies acting like domesticated dogshttps://www.eurekalert.org/news-releases/824375https://www.cell.com/iscience/fulltext/S2589-0042(19)30557-7Ethyl mercaptan-sniffing animalshttps://nj.gov/health/eoh/rtkweb/documents/fs/0894.pdfhttps://bedfordaudubon.org/2016/01/07/turkey-vulture-and-black-vulture/https://www.birdnote.org/podcasts/birdnote-daily/turkey-vultures-and-gas-pipelinesIka-tako computer virushttps://www.wired.co.uk/article/japanese-virushttps://www.computerworld.com/article/1343317/hacker-s-p2p-virus-replaces-files-with-sea-creature-manga.htmlFrogs that don’t have middle ears but can still hearhttps://www.pnas.org/doi/10.1073/pnas.1302218110https://phys.org/news/2013-09-frogs-ears-mouth.htmlhttps://pmc.ncbi.nlm.nih.gov/articles/PMC3023005/[Ask the Science Couch]Mathematical uses for tangentshttps://tutorial.math.lamar.edu/classes/calciii/TangentNormalVectors.aspxhttp://www.braeunig.us/space/orbmech.htmhttps://science.nasa.gov/learn/basics-of-space-flight/chapter4-1/https://www.nasa.gov/ames-engineering/spaceflight-division/flight-dynamics/trajectory-design/https://willkempartschool.com/compostional-mistakes-in-drawing/[Butt One More Thing]Young turquoise killifish gut microbes made old fish live longerhttps://www.nature.com/news/young-poo-makes-aged-fish-lhttps://www.biorxiv.org/content/10.1101/120980v2

Mar 4, 2025 • 55min
Cancer Revisit with Deboki Chakravarti
We're thrilled to be joined for a special return to the topic of Cancer by our own magnificent editorial assistant, Deboki Chakravarti! We cover a ton in this beefy episode, so grab a snack, get comfy, and prepare to dive deep on a topic that's well worth the revisit. SciShow Tangents is on YouTube! Go to www.youtube.com/scishowtangents to check out this episode with the added bonus of seeing our faces! Head to www.patreon.com/SciShowTangents to find out how you can help support SciShow Tangents, and see all the cool perks you’ll get in return, like bonus episodes and a monthly newsletter! A big thank you to Patreon subscriber Garth Riley for helping to make the show possible!And go to https://store.dftba.com/collections/scishow-tangents to buy some great Tangents merch!Follow us on Twitter @SciShowTangents, where we’ll tweet out topics for upcoming episodes and you can ask the science couch questions! While you're at it, check out the Tangents crew on Twitter: Ceri: @ceriley Sam: @im_sam_schultz Hank: @hankgreen[Truth or Fail]Water-logged diaper scanshttps://www.nist.gov/pml/about-pml/pml-working-you/pml-working-you-archives/fighting-cancer-diapershttps://www.nist.gov/news-events/news/2017/11/how-disposable-diapers-can-improve-measurements-tumor-growthToothbrush cancer camerahttps://www.forbes.com/sites/rachelsandler/2022/09/22/why-billionaire-eric-schmidt-is-backing-a-high-school-senior-making-a-cancer-detecting-toothbrush-and-other-brilliant-teens/https://www.mayoclinic.org/medical-professionals/obstetrics-gynecology/news/a-substantial-step-toward-earlier-endometrial-cancer-detection/mac-20560620Cancer-cell kleenexhttps://www.statnews.com/2017/09/06/masspec-pen-cancer/[This or That: Researcher, Patient, or Both]Round 1 - Sister Mary Joseph Nodulehttps://www.sciencedirect.com/science/article/pii/S2468294222000089#sec0006https://link.springer.com/article/10.1007/s00261-016-1031-1https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(18)31864-6/abstractRound 2 - Trousseau sign of malignancyhttps://www.sciencedirect.com/science/article/pii/S2468294222000089#sec0002https://pmc.ncbi.nlm.nih.gov/articles/PMC1022062/Round 3 - AOH1996https://www.alexslemonade.org/blog/chance-meeting-leads-promising-cancer-treatmenthttps://pmc.ncbi.nlm.nih.gov/articles/PMC10592352/https://clinicaltrials.gov/study/NCT05227326Round 4 - Papanicolaou (Pap) testhttps://acsjournals.onlinelibrary.wiley.com/doi/10.1002/cncy.22734https://www.sciencedirect.com/science/article/abs/pii/S2213294514002178[Ask the Science Couch]Proposition 65 in the state of California & carcinogens in studieshttps://oehha.ca.gov/proposition-65/about-proposition-65https://oehha.ca.gov/proposition-65/proposition-65-listhttps://oehha.ca.gov/proposition-65/how-chemicals-are-added-proposition-65-listhttps://pmc.ncbi.nlm.nih.gov/articles/PMC6349368/https://link.springer.com/article/10.1007/s10311-023-01668-1https://www.cancer.gov/about-cancer/causes-prevention/risk/substances/wood-dust Patreon bonus: Treatments for different cancers and why there’s no singular curehttps://www.cancer.gov/about-cancer/treatment/typeshttps://www.aacr.org/patients-caregivers/about-cancer/what-is-cancer/https://www.cancercenter.com/community/blog/2023/10/cancer-is-not-one-diseasehttps://medlineplus.gov/cancer.html[Butt One More Thing]A trained dog could sniff out colorectal cancer in poop sampleshttps://gut.bmj.com/content/60/6/814https://www.cshl.edu/the-doctor-will-sniff-you-now/
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