SciShow Tangents

Latest Episodes:

Batteries Nov 14, 2023

Show notes

Click here to check out the limited-time-only Tangents t-shirt inspired by this episode! https://store.dftba.com/products/shirt-of-the-month-shrimp-battery

Batteries are all around us, in things we use all the time, and in all different shapes and sizes, so of course we know exactly how they all work, right? Nope! Not even close! The bizarre breadth of our battery banter includes Ben Franklin, tiny computers, and...shrimp?

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!

While you're at it, check out the Tangents crew on Twitter: Ceri: @ceriley Sam: @im_sam_schultz Hank: @hankgreen

[Trivia Question]

Oxford Electric Bell battery lifespan

https://www.mentalfloss.com/article/52147/what%E2%80%99s-world%E2%80%99s-longest-running-science-experiment

https://archwww.physics.ox.ac.uk/history/Exhibit1.html

https://www.smithsonianmag.com/smart-news/mystery-continuously-functioning-battery-1840-180954028/

https://x.com/UniofOxford/status/1610593348464640001?s=20

[Fact Off]

Edible battery for sustainability (and maybe child safety)

https://academic.oup.com/jimb/article/45/5/313/5996662

https://arstechnica.com/science/2023/05/researchers-craft-a-fully-edible-battery/

https://pubmed.ncbi.nlm.nih.gov/36919977/

https://www.popsci.com/technology/edible-battery-prototype/

https://www.connecticutchildrens.org/ear-nose-and-throat/what-to-do-if-your-child-swallows-or-ingests-a-button-battery/#:~:text=Every%20year%2C%20about%202%2C500%20kids,stomach%2C%20it%20can%20be%20fatal.

https://www.npr.org/sections/alltechconsidered/2016/08/31/491947946/how-an-edible-battery-could-power-medical-robots-you-swallow

Platypus electroreception study using batteries

https://pubmed.ncbi.nlm.nih.gov/3945317/

https://www.latimes.com/archives/la-xpm-1986-03-12-vw-18644-story.html

https://www.jstor.org/stable/56002?typeAccessWorkflow=login

https://journals.biologists.com/jeb/article/202/10/1447/8186/Electroreception-in-monotremes

[Ask the Science Couch]

Grid-scale storage with batteries

https://www.iea.org/energy-system/electricity/grid-scale-storage

https://www.nrel.gov/docs/fy19osti/74426.pdf

https://www.sciencedirect.com/science/article/pii/S1364032122001368

https://www.sciencedirect.com/science/article/pii/S2352152X17304437

https://www.science.org/content/article/new-generation-flow-batteries-could-eventually-sustain-grid-powered-sun-and-wind

https://www.sciencedirect.com/science/article/abs/pii/S1364032113005418?via%3Dihub

https://www.scientificamerican.com/article/rechargeable-molten-salt-battery-freezes-energy-in-place-for-long-term-storage/

[Butt One More Thing]

Microbial battery with exoelectrogens and poop water

https://www.pnas.org/doi/10.1073/pnas.1307327110

https://www.theverge.com/2013/9/19/4747532/scientists-use-poop-to-generate-electricity

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Trick or Treat Month: Slime with Alexis Nikole Nelson! Oct 31, 2023

Show notes

Trick or Treat Month returns... and this time it's personal! Join us for another month of spooky themes and special surprise guest apparitions! Try not to get too scared!

And so we close the ancient, flesh-bound spell book on another Trick or Treat Month... but we're going out on top, baby! Alexis Nikole Nelson has appeared, as if by magic, to lead us into the deep, dark woods and point out all the slimy, sticky, gross stuff on the ground that she says we can eat. I guess I trust her!

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!

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]

Round 1 - Blue glowing slime

https://scripps.ucsd.edu/news/tube-worm-slime-displays-long-lasting-self-powered-glow

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5103273/

Round 2 - Eating parents’ slime

https://animalmicrobiome.biomedcentral.com/articles/10.1186/s42523-023-00243-x

https://www.wired.co.uk/article/caecilians-limbless-amphibian-skin-feeding-young-cloaca

https://www.sciencedaily.com/releases/2010/10/101029104603.htm

https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/pmic.200500591

Round 3 - Snottites

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3246232/

https://www.nationalgeographic.com/science/article/see-the-ugly-beauty-that-lives-in-a-toxic-cave

Round 4 - Mating plug

https://journals.biologists.com/jeb/article/218/9/1410/14572/Size-dependence-in-non-sperm-ejaculate-production

https://link.springer.com/article/10.1023/A:1005596707591

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1564092/

https://onlinelibrary.wiley.com/doi/full/10.1002/mrd.22689

[Trivia Tiebreaker]

Hagfish slime on road

https://www.southernfriedscience.com/your-car-has-just-been-crushed-by-hagfish-frequently-asked-questions/

[Ask the Science Couch]

Slime molds and biocomputers

https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/physarum-polycephalum

https://www.nature.com/articles/s41598-019-55749-9

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5755296/

https://link.springer.com/article/10.1007/s12668-014-0156-3

https://www.newscientist.com/article/dn23713-slime-mould-could-make-memristors-for-biocomputers/

https://techhq.com/2023/04/biocomputers-an-alternative-to-quantum-computing/

[Butt One More Thing]

Bird nestling fecal sac / mucus membrane

https://www.audubon.org/news/what-are-fecal-sacs-bird-diapers-basically

https://onlinelibrary.wiley.com/doi/abs/10.1111/jav.00353

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Trick or Treat Month: Theories with Dan Schreiber! Oct 17, 2023

Show notes

Trick or Treat Month returns... and this time it's personal! Join us for another month of spooky themes and special surprise guest apparitions! Try not to get too scared!

Our yearly cavalcade of terror rolls on with a new Grand Marshall of Terror: podcaster, author, and mad genius Dan Schreiber! And he's here to tell us about the weirdest, creepiest, most otherworldly theories ever devised of! There are lots of science-y ideas out there, and not all of them can be right, after all!

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!

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

[Trivia Question]

The Classification of Quasithin Groups page number

https://www.livescience.com/33628-funny-physics-theorems-names.html

https://www.scientificamerican.com/article/researchers-race-to-rescue-the-enormous-theorem-before-its-giant-proof-vanishes/

https://books.google.com/books/about/The_Classification_of_Quasithin_Groups.html?id=KC0ZAQAAIAAJ

https://www.newscientist.com/article/dn20893-prize-awarded-for-largest-mathematical-proof/

[Fact Off]

Infinite monkey theorem test in a zoo

https://law.stanford.edu/wp-content/uploads/2017/10/PATENTS-IN-AN-ERA-OF-INFINITE-MONKEYS-AND-ARTIFICIAL-INTELLIGENCE.pdf

https://www.npr.org/sections/13.7/2013/12/10/249726951/the-infinite-monkey-theorem-comes-to-life

http://news.bbc.co.uk/2/hi/3013959.stm

https://www.theguardian.com/uk/2003/may/09/science.arts

Nostradamus: predictions & jam & benzoic acid

[Ask the Science Couch]

Theory of mind & false belief tests

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3629913/

https://www.cambridge.org/core/journals/behavioral-and-brain-sciences/article/does-the-chimpanzee-have-a-theory-of-mind/1E96B02CD9850016B7C93BC6D2FEF1D0

https://psycnet.apa.org/record/2010-18540-002

https://link.springer.com/referenceworkentry/10.1007/978-1-4419-1698-3_91

[Butt One More Thing]

Freudian developmental theory & the anal stage

https://www.ncbi.nlm.nih.gov/books/NBK557526/

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Trick or Treat Month: Tombs with Siobhan Thompson! Oct 03, 2023

Show notes

Trick or Treat Month returns... and this time it's personal! Join us for another month of spooky themes and special surprise guest apparitions! Try not to get too scared!

This year's ghastly Grand Guignol of science and screams begins at the end: the tomb! And we dug up an old friend, Dimension 20's Siobhan Thompson, to guide us deep into the cursed catacombs of knowledge!

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!

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

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Hygiene Sep 19, 2023

Show notes

Visit HENSONSHAVING.com/TANGENTS to pick the razor for you and use code TANGENTS and you’ll get two years' worth of blades free!

A big part of being a human is that you get progressively more gross as the day goes on. Various parts start stinking, hair grows all over your face, you're touching who-knows-what... luckily for all of us, someone a long time ago decided to invent hygiene! Otherwise we'd have to lick ourselves like cats!

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!

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

[Definition]

History of hygiene https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2542893/ [Trivia Question] Pelagic thresher sharks visit blue-streaked cleaner wrasse stations https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0014755 https://www.fisheries.noaa.gov/feature-story/sharks-rays-and-climate-change-impacts-habitat-prey-distribution-and-health

[Fact Off]

Bronze Age ivory lice comb with Canaanite language

https://jjar.huji.ac.il/sites/default/files/jjar/files/jjar2_art4_lachish_p76-119_2022-10-12_01.pdf https://www.sciencefocus.com/news/4000-year-old-head-lice-comb-found-inscribed-with-phrase-using-the-alphabet https://www.sciencenews.org/article/canaanite-comb-lice-israel-alphabet

Tampon Task Force & menstrual hygiene https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5436965/ https://catalystjournal.org/index.php/catalyst/article/view/28788/_9 https://www.youtube.com/watch?v=KYXUQDzSg4o&feature=youtu.be https://srh.bmj.com/content/early/2023/07/03/bmjsrh-2023-201895 https://www.eurekalert.org/news-releases/997629

[Ask the Science Couch]

Antiperspirant aluminum compounds - how they work & are they harmful

https://cen.acs.org/articles/90/i27/Deodorants-Antiperspirants.html https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3813027/ https://www.webmd.com/breast-cancer/features/antiperspirant-facts-safety https://www.smithsonianmag.com/history/how-advertisers-convinced-americans-they-smelled-bad-12552404/

[Butt One More Thing]

Mandrills teach their children hygienic behaviors to avoid peri-anal parasites

https://royalsocietypublishing.org/doi/10.1098/rspb.2022.2349 https://www.eurekalert.org/news-releases/979546

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Big vs Small with Tiny Matters Sep 05, 2023

Show notes

Sam's out this week, but worry not: he found another Sam to replace him! Sam Jones, host of the podcast Tiny Matters that is! Sam and her co-host, our own Deboki Chakravarti, join Ceri and Hank in our first ever team-based episode of Tangents! Two teams enter, one team leaves!

What more Tiny Matters? Check out the podcast here: https://www.acs.org/pressroom/tiny-matters.html!

And check out Deboki at https://twitter.com/okidoki_boki , and Sam at https://twitter.com/samjscience

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!

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 Express]

Project Gasbuggy

https://www.nytimes.com/1970/02/22/archives/project-gasbuggy-and-catch85-thats-krypton85-one-of-the-radioactive.html

https://content.time.com/time/subscriber/article/0,33009,899941,00.html

https://books.google.com/books?id=g9QDAAAAMBAJ&dq=%22project+gasbuggy%22&pg=PA102#v=onepage&q=%22project%20gasbuggy%22&f=false

Operation Big Itch

https://www.tandfonline.com/doi/abs/10.1080/13623699908409460

https://documents.theblackvault.com/documents/biological/bigitch.pdf

Operation North Pole (Project Cirrus)

https://www.ge.com/news/reports/cool-science-vonnegut-ge-research

https://alachuacounty.us/Depts/epd/EPAC/General%20Electric%20History%20Of%20Project%20Cirrus%20July%201952%20ORIGINAL.pdf

Brilliant Pebbles

https://www.llnl.gov/archives/1980s/brilliant-pebbles

https://solarsystem.nasa.gov/missions/clementine/in-depth/

https://highfrontier.org/wp-content/uploads/2012/09/The-Rise-and-Fall-of-Brilliant-Pebbles-Baucom.pdf

[Ask the Science Couch]

Smallest organisms: ultramicrobacteria and Candidate Phyla Radiation

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9297842/

https://link.springer.com/article/10.1134/S0026261712040054

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC243725/

https://www.jstage.jst.go.jp/article/jsme2/16/2/16_2_67/_article

https://www.nature.com/articles/ncomms7372

https://newscenter.lbl.gov/2015/02/27/ultra-small-bacteria/

[Butt One More Thing]

Big-bottomed ants (Atta laevigata / hormiga culona)

https://www.atlasobscura.com/foods/big-bottomed-ants-hormigas-culonas

https://books.google.com/books?id=NebIEAAAQBAJ&pg=PT187&lpg=PT187

https://www.fondazioneslowfood.com/en/ark-of-taste-slow-food/da-tradurreformica-culona/

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Dust Aug 22, 2023

Show notes

Head to factormeals.com/tangents50 and use code tangents50 to get 50% off!
-----------------------------
Use promo code TANGENTS to get 50% off up to $10 value, when you spend $15 or more at convenience, grocery or retail stores on DoorDash.
The universe is dusty AF, frankly. It's on your body, in every nook in cranny of your house, some planets are just made entirely of dust pretty much, and space is full of it! It's everywhere, so I guess we might as well learn something about 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!

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

[Trivia Question]

Apollo 11 moon dust sample at auction

https://www.bonhams.com/auction/27937/lot/21/a-unique-opportunity-to-own-a-nasa-verified-piece-of-the-apollo-11-contingency-sample-5-scanning-electron-microscope-sem-aluminum-sample-stubs-each-topped-with-approximately-10-mm-diameter-carbon-tape-containing-apollo-moon-dust/

https://www.atlasobscura.com/articles/apollo-11-lunar-dust-auction

[Fact Off]

Spiderwebs collecting microplastic dust as sensors

https://www.sciencedirect.com/science/article/abs/pii/S0048969722021015

https://www.chemistryworld.com/news/spider-webs-record-severity-of-microplastic-pollution-in-cities/4015800.article

https://phys.org/news/2022-06-microplastics-spider-webs.html

https://edu.rsc.org/science-research/spiderwebs-used-as-microplastic-pollution-screens/4016071.article

https://www.sciencealert.com/microplastics-are-so-pervasive-you-can-even-find-them-stuck-in-spider-webs

Martian concrete made from dust, blood, and urea (also potato starch and salt)

https://pubs.aip.org/physicstoday/article/76/3/62/2868070/Building-on-Mars-with-human-blood-and

https://www.sciencedirect.com/science/article/pii/S2590006421000442

https://ui.adsabs.harvard.edu/abs/2018EGUGA..20.4453Z/abstract

https://www.eurekalert.org/news-releases/982978

https://www.degruyter.com/document/doi/10.1515/eng-2022-0390/html

[Ask the Science Couch]

House dust mite allergens

https://pubmed.ncbi.nlm.nih.gov/11845577/

https://pubmed.ncbi.nlm.nih.gov/7464922/

https://www.jacionline.org/article/0021-8707(67)90045-7/fulltext

https://link.springer.com/article/10.1007/s12016-018-8693-0

[Butt One More Thing]

Fecal dust air pollutant from cow and horse manure

https://fee.org/articles/the-great-horse-manure-crisis-of-1894/

https://99percentinvisible.org/article/cities-paved-dung-urban-design-great-horse-manure-crisis-1894/

https://www.texasobserver.org/cafos-panhandle-tceq/

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Blue Aug 08, 2023

Show notes

From trustworthy to calming, sad to steadfast, and, of course, jeans - the color blue means a lot of things to a lot of people. Join Team Tangents as we delve into this deceptively complicated primary color!

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

Sources:

[Trivia Question]

YInMn blue unnamed element

https://chemistry.oregonstate.edu/chemistry-news-events/yinmn-blue

https://chemistry.oregonstate.edu/impact/2017/09/hello-bluetiful-theres-a-new-yinmn-blue-inspired-crayon

https://www.smithsonianmag.com/smart-news/first-blue-pigment-discovered-200-years-finally-sale-180976769/

https://www.nytimes.com/2021/02/05/style/blue-pigment-YInMn.html

https://colourlex.com/project/yinmn-blue/

[Fact Off]

Blue dye blocking ATP for spinal cord injuries

https://www.urmc.rochester.edu/news/story/blue-dye-may-hold-promise-in-treating-spinal-cord-injury

https://www.wired.com/2009/07/bluerats/

https://www.sciencenews.org/article/brilliant-blue-spine

https://www.popsci.com/scitech/article/2009-07/good-news-animal-lovers-and-folks-spinal-injuries/

Vivianite blue found on bones, shells, and other remains

https://www.atlasobscura.com/articles/vivianite-blue-human-remains

https://pubmed.ncbi.nlm.nih.gov/9871987/

https://www.kristineballard.com/vivianite-blue/

https://www.uaf.edu/museum/press/spotlight/blue-babe/

https://www.sciencedirect.com/science/article/pii/S2352409X21001309

https://onlinelibrary.wiley.com/doi/10.1002/(SICI)1096-8644(199809)107:1%3C1::AID-AJPA1%3E3.0.CO;2-R

[Ask the Science Couch]

Color psychology: blue and marketing/logos

https://today.yougov.com/topics/international/articles-reports/2015/05/12/why-blue-worlds-favorite-color

https://www.newyorker.com/magazine/2010/09/20/the-face-of-facebook

https://www.joehallock.com/?page_id=1281

https://link.springer.com/article/10.1007/s11747-010-0245-y

https://www.jstor.org/stable/3151897

https://www.emerald.com/insight/content/doi/10.1108/SJME-03-2018-005/full/html

[Butt One More Thing]

Evidence of blue cheese in Austrian paleofeces

https://www.eurekalert.org/news-releases/930931

https://www.cell.com/current-biology/fulltext/S0960-9822(21)01271-9

https://www.theguardian.com/science/2021/oct/14/sophisticated-ancient-faeces-shows-humans-enjoyed-beer-and-blue-cheese-2700-years-ago#

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Bacteria Jul 25, 2023

Show notes

Take control of your finances today. Go to https://RocketMoney.com/TANGENTS to get started!

It's easy to write off bacteria as no good, nasty, disease causing creeps, but consider this: without bacteria, we wouldn't have yogurt, or delicious sourdough bread, or a gut microbiome to digest those things! There are probably other good examples of ways bacteria are helpful to us, but I'm too hungry to think of them...

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Shells Jul 11, 2023

Show notes

From eggs to tacos to Ninja Turtles, some of the best things in life come in shells. So cozy on up inside the nearest conch as we regale you with tales of shells from all across the scientific spectrum!

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!

And go to https://store.dftba.com/collections/scishow-tangents to buy your very own, genuine SciShow Tangents sticker!

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

[Trivia Question]

Golden ratio nautilus shells

https://link.springer.com/article/10.1007/s00004-018-0419-3

[Fact Off]

Batteries made from crab shells

https://www.cell.com/matter/fulltext/S2590-2385(22)00414-3

https://www.sciencedaily.com/releases/2022/09/220901135827.htm

https://www.thedailybeast.com/the-future-of-renewable-energy-may-be-this-battery-made-from-crab-shells

https://www.sciencedirect.com/topics/engineering/cycle-life