
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

Aug 9, 2024 • 3min
Why Do We Sweat?
From our episode on Sweat, here's Ceri's brilliant rendition of "Why Do We Sweat?" This song is a parody of Rusted Root's "Send Me On My Way."Lyrics: Ceri RileyMusic: Joseph "Tuna" Metesh

Aug 6, 2024 • 53min
Bug Bites
Some are itchy, some are painful, some go totally unnoticed by us every single day...bugs have such variety in the ways they chomp, some chomps aren't even from bug mouths, but from bug butts! Join us while we debate, query, and learn all we can about the wide world of bug bites.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[This, That, or the Other: These Ouches Are No Slouches]https://onlinelibrary.wiley.com/doi/10.1111/cla.12103https://www.press.jhu.edu/books/title/10878/sting-wild[Trivia Question]Size of giant toe-biting water bugs found in Cyprushttps://travaux.pensoft.net/article/94457/https://www.livescience.com/animals/insects/giant-toe-biter-water-bugs-discovered-in-cyprus-for-the-1st-timehttps://blog.abchomeandcommercial.com/do-water-bugs-bite/https://cyprus-mail.com/2024/03/20/massive-bug-sighted-keep-your-toes-out-of-the-water/[Fact Off]Epomis beetle larvae and adults eat frogs as role-reversal predatorshttps://journals.plos.org/plosone/article?id=10.1371/journal.pone.0025161Bumble bees bite plant leaves to make them flower earlyhttps://www.science.org/doi/10.1126/science.aay0496https://www.scientificamerican.com/article/bumblebees-bite-plants-to-force-them-to-flower-seriously/https://wisconsinbumblebees.entomology.wisc.edu/about-bumble-bees/life-cycle-and-development/https://academic.oup.com/jxb/article/67/17/4925/2197656[Ask the Science Couch]Causes of itchiness and how calamine lotion / zinc oxide workshttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4862869/https://www.cuimc.columbia.edu/news/how-stop-bug-bites-itchinghttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC9532860/https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2019.02090/fullhttps://jsstd.org/calamine-lotion/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4120804/Patreon bonus: Bugs with big mandibles or bite marks (even if they rarely bite humans)https://pukaha.org.nz/the-wacky-world-of-new-zealand-weta/https://newzealandecology.org/nzje/2995https://www.nhm.ac.uk/discover/stag-beetles.htmlhttps://journals.biologists.com/jeb/article/217/7/1065/13119/Biomechanical-determinants-of-bite-forcehttps://www.nps.gov/articles/giant-water-bug.htm[Butt One More Thing]Beaded lacewing (Lomamyia latipennis) larvae paralyze termites with farts before eating themhttps://www.wired.com/2015/06/silent-deadly-fatal-farts-immobilize-prey/https://www.nature.com/articles/289506a0

20 snips
Jul 23, 2024 • 49min
Sweat
Woo boy! It's hot out there, why don't ya grab a nice glass of ice cold lemonade and listen in on everything you did and didn't want to learn about sweat. Are humans the sweatiest of them all? Do fish sweat? What lives in the ecosystem between two people holding hands for the first time? What is it all even for!??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 subscribers Garth Riley and Glenn Trewitt 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! Sources: [Truth or Fail]Sweat sucking spiders supplementing salts Polar bears follow sweaty paw paths in search for loveA new bacteria-infecting cure for extra stinky sweaty feet [Trivia Question]NASA’s ECOSTRESS measures evapotranspiration aka plant sweatinghttps://www.jpl.nasa.gov/missions/ecosystem-spaceborne-thermal-radiometer-experiment-on-space-station-ecostresshttps://www.jpl.nasa.gov/news/watching-plants-water-use-is-no-sweat-for-ecostress[Fact Off]Charles Blagden experiments with “super-sauna” that cooked steak but made humans sweathttps://publicdomainreview.org/collection/experiments-and-observations-in-a-heated-room-1774/https://www.jstor.org/stable/106218?seq=1https://royalsociety.org/about-us/who-we-are/history/Antiperspirant made with propylene glycol that evaporates your sweat before it leaves the ducts [Ask the Science Couch]Non-water stuff in eccrine sweat (salt, urea, hormones, etc.)https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6773238/https://pubmed.ncbi.nlm.nih.gov/12817713/https://www.penn.museum/sites/bulletin/1733/https://ontarioarchaeology.org/wp-content/uploads/oa048-02_macdonald.pdfhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5941775/Patreon bonus: Effects of stress/emotion on sweat composition and smellhttps://onlinelibrary.wiley.com/doi/10.1111/j.1467-2494.2007.00387.xhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC9518869/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9246182/[Butt One More Thing]Treating hyperhidrosis in the perianal region with botoxhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC8436621/https://pubmed.ncbi.nlm.nih.gov/11172190/

Jul 9, 2024 • 48min
Cicadas
This summer's hottest North American bug is without question, the cicada. They've got everything: neon-colored wing veins, bendy-straw-style exoskeletons, an insatiable thirst for tree goo, and after 17 years of napping, they're bursting out of the ground ready to par-tay!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[This or That: Cicadas or the Beatles]https://www.science.org/content/article/secret-cicadas-chirphttps://cicadas.uconn.edu/behavior/https://www.eurekalert.org/news-releases/698019Algorithm to measure song changes over timehttps://www.eurekalert.org/news-releases/500262https://www.science.org/content/article/computer-charts-evolution-beatlesTest signals in fiber optic cableshttps://entomologytoday.org/2023/12/04/broadband-buzz-periodical-cicadas-chorus-measured-fiber-optic-cables/https://academic.oup.com/jinsectscience/article/23/6/3/7425398?login=falseFemale flies responding to songshttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4932889/https://www.floridamuseum.ufl.edu/science/cicadas-are-the-barry-white-of-the-insect-world/Eroom’s Law principle related to drug developmenthttps://www.science.org/content/blog-post/eroom-s-lawhttps://iubmb.onlinelibrary.wiley.com/doi/10.1002/bmb.21617https://en.wikipedia.org/wiki/Eroom%27s_law[Trivia Question]Bird hunting caterpillars on emergence and non-emergence yearshttps://www.science.org/doi/10.1126/science.adi7426https://www.vox.com/down-to-earth/24148209/cicadas-2024-periodical-brood-eat-ecosystem-impact[Fact Off]Brown bears digging up cicada nymphs in Japanese human-planted forestshttps://eprints.lib.hokudai.ac.jp/dspace/handle/2115/86161https://cdnsciencepub.com/doi/10.1139/cjz-2020-0222https://esajournals.onlinelibrary.wiley.com/doi/10.1002/ecy.4266https://www.eurekalert.org/news-releases/1036064Cicadas pee in a very mammal-like streamhttps://www.scientificamerican.com/article/why-cicadas-power-spray-their-pee/[Ask the Science Couch]Cicada sound production using the tymbal, stridulation, or wing impactshttps://link.springer.com/referenceworkentry/10.1007/978-1-4020-6359-6_4279https://journals.biologists.com/jeb/article/198/4/1001/6996/The-Role-of-the-Tymbal-in-Cicada-Sound-Productionhttps://journals.plos.org/plosone/article?id=10.1371/journal.pone.0118554https://journals.biologists.com/jeb/article/151/1/41/5697/Do-Cicadas-Radiate-Sound-through-their-Ear-DrumsPatreon bonus: Periodical cicadas emerge after 13 or 17 (prime numbers) yearshttps://www.jstor.org/stable/2406585https://www.livescience.com/14238-southern-cicadas-emerge-exact-prime-number-cycles.htmlhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC2690011/https://cicadas.uconn.edu/[Butt One More Thing]Cicada nymph anal liquid is adhesive and mucus-likehttps://www.sciencedirect.com/science/article/abs/pii/S0044523104700686https://www.youtube.com/watch?v=B2rax3CKoj8

Jun 25, 2024 • 52min
Gay Animals with Field Guide to Gay Animals
It wouldn't be Pride at Tangents if we weren't getting into some science! We're joined by Owen Ever and Laine Kaplan-Levenson, the hosts of a new show from news outlet Canadaland called "Field Guide to Gay Animals." Our conversation ranged far and wide across a myriad of ways queerness is expressed in the animal world and the challenges and joys of studying it. 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: @hankgreenSources:[Truth or Fail Express]Sequentially hermaphroditic shrimphttps://sites.lsa.umich.edu/eeblog/2020/12/01/sequential-hermaphroditism-or-why-to-be-wary-of-frog-dna/https://www.smithsonianmag.com/science-nature/oceans-rising-acidity-could-impact-shrimps-early-sex-reversal-180972521/https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0218238https://www.researchgate.net/publication/355179232_Protandric_Transcriptomes_to_Uncover_Parts_of_the_Crustacean_Sex-Differentiation_PuzzleNudibranch with male and female sex organshttps://www.livescience.com/27065-sea-slug-uses-disposable-penis.htmlhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3639767/https://link.springer.com/article/10.1007/s10164-018-0562-z?wtSparrows with white or tan stripes and functionally four gendershttps://www.audubon.org/news/the-fascinating-and-complicated-sex-lives-white-throated-sparrowshttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7725849/[This or That: Bird or Bug?]Male-male duo that dances together to attract a mate (blue-backed manakin)https://www.biodiversitylibrary.org/page/51171525#page/225/mode/1uphttps://academic.oup.com/beheco/article/18/1/21/209396Male-male pair that takes over a male-female pair’s nest (Japanese termites)https://www.eurekalert.org/news-releases/680968https://www.sciencedirect.com/science/article/abs/pii/S0003347216301233Mating-related injuries on both male and female specimens (dragonflies)https://www.biodiversitylibrary.org/page/16252041#page/48/mode/1up[Ask the Science Couch]History of sexual diversity in animals documented or not in zoology (e.g. Adelie penguins)https://academic.oup.com/zoolinnean/article/195/1/1/6568055https://www.penguinscience.com/reprints/10%20Russell.pdfhttp://www.italian-journal-of-mammalogy.it/pdf-77304-13455?filename=Same_sex%20sexual%20behaviour.pdf[Butt One More Thing]Aristotle’s History of Animals mentions female pigeons laying wind-eggs after same-sex sexual behaviorhttps://classics.mit.edu/Aristotle/history_anim.6.vi.htmlhttps://www.atlasobscura.com/articles/found-an-egg-with-no-yolk

Jun 11, 2024 • 50min
Bananas with Answer in Progress
Stefan Jinn, a former host of SciShow Tangents now bringing science to life on YouTube, joins Sabrina Cruz from Answer in Progress, who passionately documents her quest for knowledge. This lively discussion dives into the surprisingly scientific world of bananas, exploring their classification as berries, unique uses of banana peels, and even cosmic comparisons to newborn galaxies. With humorous anecdotes and playful banter, they tackle everything from budgeting to the mysteries of banana flowers, making the topic both entertaining and enlightening!

Jun 5, 2024 • 4min
Teaser: Turtles Cut For Time Question
Another wild teaser appears! This little snippet is from a bonus, cut-for-time question from our episode on Turtles! You can listen to the rest, and also a bunch more bonus content, on our Patreon. It's one of the best ways you can support the show and keep Tangents going and free for everyone. Head over to Patreon.com/scishowtangents and join in all the learning and shenanigans! Thank you so much to all our Patrons - we genuinely would not get to do this without you, and we really like doing this, so it rocks that we can. THANK YOU!

May 28, 2024 • 50min
Cloning
Cloning is more than just a sci-fi fantasy; it’s a real-world phenomenon with intriguing implications! From self-cloning crayfish that could shed light on diseases to the unique reproduction methods of the little fire ant, cloning unfolds in nature in surprising ways. Explore the potential of cloning for de-extincting woolly mammoths and ponder the ethical dilemmas that arise. The hosts also share humorous takes on cloning ethics, the identity questions sparked by teleportation, and the quirky world of lab-grown meat!

May 14, 2024 • 47min
Glue
Discover the peculiarities of glue and stickiness as the hosts humorously explore adhesive science. They delve into the history of glues, from ancient sources like mistletoe to innovative materials like UV-sensitive substances. Personal anecdotes about Shopify intertwine with whimsical discussions about superhero identities. Fascinating trivia about adhesives and even a lighthearted take on medical solutions like fibrin glue add depth and laughter to the mix. It's a delightful blend of science, humor, and creativity!

May 7, 2024 • 48min
Introducing Crash Course Pods: The Universe
No, your eyes and ears don't deceive you - this is, in fact, a super special cross-feed treat from our friends over at Crash Course in the form of the first episode of their brand new show, "Crash Course Pods: The Universe." Hosted by novelist John Green and astrophysicist Dr. Katie Mack, "The Universe" is a podcast about the history of the entire universe, from its explosive beginnings to its mysterious, but inevitable, end. In this first episode Dr. Mack walks John through the Big Bang and the very first micro-moments of the universe, and some of the ways that that ancient event is actually still connected to us, here, today. It's great, we really like it, we're really proud of the Crash Course team, and we thought you guys would also really enjoy the show! So to make it easy, we put the entire first episode right here! The rest of John and Dr. Mack's conversation will cover 11 episodes airing every other week on the Crash Course YouTube channel at youtube.com/crashcourse or wherever you get your podcasts. Give it a listen, and we hope you enjoy!
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