SciShow Tangents

Season 3 has come to a close, and the Tangents crew is taking a week off. While we scour the World Wide Web for all new, mind-blowing science facts, enjoy this classic episode about the Internet!Head to https://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!A big thank you to Patreon subscriber Garth Riley for helping to make the show possible!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

It's all led up to this! We usually relegate our butt facts to the end of episodes, but this week we're giving butts the respect they deserve. It's butts all the way down, baby!Head to https://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!A big thank you to Patreon subscribers Garth Riley and Tom Mosner for helping to make the show possible!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

The Season 3 finale draws ever nearer, but before we get to that big beautiful Butt episode, we need to make a detour to those nifty tools on the ends of our limbs: hands and feet!Head to https://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!A big thank you to Patreon subscribers Garth Riley and Tom Mosner for helping to make the show possible!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]Heel-toe or toe-heel runninghttps://pubmed.ncbi.nlm.nih.gov/31525171/[Fact Off]Trench foot and (possibly, tenuously) water balloonshttps://www.ncbi.nlm.nih.gov/books/NBK482364/https://www.wemjournal.org/article/S1080-6032(06)70334-9/fulltexthttps://apps.dtic.mil/sti/citations/AD0666752https://www.sciencedirect.com/science/article/pii/B978012821606400017Xhttp://content.time.com/time/specials/packages/article/0,28804,2049243_2048654_2049039,00.html[Ask the Science Couch]Nail care evolution/historyhttps://www.britannica.com/story/how-do-monkeys-and-apes-trim-their-fingernailshttps://theconversation.com/curious-kids-why-do-we-have-fingernails-and-toenails-110989https://www.floridamuseum.ufl.edu/science/ancient-primates-had-grooming-claws/https://www.sciencedirect.com/science/article/abs/pii/S0047248417305134https://tedium.co/2017/02/07/fingernail-trimming-history/[Butt One More Thing]Bidets and poopy handshttps://pubmed.ncbi.nlm.nih.gov/29709985/ 

Season 3 of Tangents is drawing to a close, and we're celebrating by taking a long, top to bottom (literally) look at bodies! To kick us off, we'll be appreciating that brain-holding, eye-having, mouth-possessing orb on top of almost all necks on Earth: the head. Thank you, the head! Head to https://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!A big thank you to Patreon subscribers Garth Riley and Tom Mosner for helping to make the show possible!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]Embalming head diameterhttps://www.sciencedirect.com/science/article/abs/pii/S0021929009001444?via%3Dihub[Fact Off]Chicken heads for rabies oral vaccineshttps://www.theatlantic.com/science/archive/2015/12/that-time-europe-air-dropped-vaccine-loaded-chicken-heads-to-bait-rabid-foxes/417951/ https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1439-0450.1982.tb01237.xhttps://pubmed.ncbi.nlm.nih.gov/31927421/https://books.google.co.in/books?id=mUu6o7SiSZ8C&lpg=PA71&ots=SlWS7Vyp4u&dq=getting+rid+of+rabies+switzerland&pg=PA71&hl=en#v=onepage&q&f=falsehttp://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.500.9910&rep=rep1&type=pdfhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3614052/Alligator stick hats https://www.washingtonpost.com/national/health-science/crocodiles-and-their-ilk-may-be-smarter-than-they-look/2013/12/06/1084cf28-5d2c-11e3-bc56-c6ca94801fac_story.htmlhttps://www.nationalgeographic.com/science/article/what-do-croc-tools-mean-for-dinosaur-innovation?loggedin=truehttps://www.livescience.com/41898-alligators-crocodiles-use-tools.htmlhttps://blogs.scientificamerican.com/laelaps/alligators-dont-play-pick-up-sticks-to-lure-lunch/https://www.newscientist.com/article/dn24750-zoologger-alligators-use-tools-to-lure-in-bird-prey/[Ask the Science Couch] Blood-brain barrierhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4292164/https://www.rndsystems.com/research-area/blood--brain-barrier-permeabilityhttps://sites.duke.edu/apep/module-2-the-abcs-of-intoxication/content-getting-alcohol-to-the-brain-crossing-the-blood-brain-barrier/https://bmcneurol.biomedcentral.com/articles/10.1186/1471-2377-9-S1-S3https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3494002/[Butt One More Thing]Amblyopsidae/cavefish head anushttps://www.discovermagazine.com/planet-earth/scientist-names-blind-fish-with-neck-anus-after-his-favorite-teamhttps://zookeys.pensoft.net/articles.php?id=3824http://webhome.auburn.edu/~armbrjw/Amblyopsidae.pdf

The pointiest birds in the wild blue yonder finally get their due! Join us to learn all of these lethal birds killer secrets, and to discover their hidden softer sides. Some use teamwork! Some keep pets! Head to https://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!A big thank you to Patreon subscriber Garth Riley for helping to make the show possible!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]https://bioone.org/journals/journal-of-raptor-research/volume-53/issue-4/0892-1016-53.4.419/Commentary-Defining-Raptors-and-Birds-of-Prey/10.3356/0892-1016-53.4.419.full  [Trivia Question]Alkyl mercury in goshawkshttps://link.springer.com/article/10.1007%2Fs10646-013-1128-zhttps://www.jstor.org/stable/4312117?casa_token=3PPQWWTwiYAAAAAA%3A7giiI7DEJGZCee8kh5vBBGP51efUFHyxLFdfDGHESY1plAdhTZLY8F5sua8iP5JMNYzhZaNZRjWpC9gYSiKEeZo5sU_BxcEbUk38ZTwCEA37g9mOpHo&seq=1#metadata_info_tab_contents[Fact Off]Bald eagle cyanobacteria toxin mysteryhttps://www.livescience.com/eagle-killing-mystery-disease-solved.htmlhttps://www.inverse.com/science/mystery-behind-mass-bald-eagle-deaths-solvedScreech owls & threadsnakeshttps://www.audubon.org/news/what-would-screech-owl-want-blind-snakehttps://www.jstor.org/stable/4218201?seq=1#page_scan_tab_contentshttps://landscapeipm.tamu.edu/what-is-ipm/ipm-concepts/pest-identification/good-bug-bad-bug/neither/texas-blind-snake/http://www.digimorph.org/specimens/Leptotyphlops_dulcis/https://www.audubon.org/field-guide/bird/eastern-screech-owl[Ask the Science Couch]Harris’s hawks (social raptors)https://www.allaboutbirds.org/guide/Harriss_Hawk/overviewhttps://www.audubon.org/field-guide/bird/harriss-hawkhttps://bioone.org/journals/the-auk/volume-130/issue-3/auk.2013.120063/Reexamining-Cooperative-Hunting-in-Harriss-Hawk-Parabuteo-unicinctus--Large/10.1525/auk.2013.120063.full[Butt One More Thing]Anthrax in raptor cloacashttps://pubmed.ncbi.nlm.nih.gov/17347404/ 

These little, bubbly guys help us make such perennial favorites as 'bread' and 'beer.' If you're saying to yourself "what is yeast, Alex," I got good news for you: you're right! Come learn about the microscopic fungus amung us on this week's Tangents!Head to https://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!A big thank you to Patreon subscriber Garth Riley for helping to make the show possible!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]Yeast mitotic arresthttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC4255140/[Fact Off]Stinking hellebore flower and yeast relationshiphttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC2871880/https://www.newscientist.com/article/mg20527473-900-stinky-flower-is-kept-warm-by-yeast-partner/#ixzz7HEPFjzKBFruit fly and yeast relationshiphttps://www.cell.com/cell-reports/fulltext/S2211-1247(14)00777-3https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0196440https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4556146/https://www.sciencedirect.com/science/article/abs/pii/0300962983906011https://www.cell.com/current-biology/fulltext/S0960-9822(12)00075-9https://blogs.scientificamerican.com/guest-blog/fruit-flies-use-alcohol-to-self-medicate-but-feel-bad-about-it-afterwards/[Ask the Science Couch]History of yeasthttps://www.sciencedirect.com/topics/agricultural-and-biological-sciences/yeastshttp://www.faculty.umb.edu/gary_zabel/Courses/Spinoza/Texts/WAW%20Moll%20Antonie%20van%20Leeuwenhoek.htmhttps://books.google.com/books?id=gy_SAAAAMAAJ&pg=PA228&lpg=PA228https://books.google.com/books?id=XILwDwAAQBAJ&pg=PA72&lpg=PA72http://e-malt.com/statistics/ScientificDigest/Beginnings_of_microbiology_and_biochemistry_yeast_research.pdf

We're back, baby! And we're seeing double! Ring in the new-ish year with us as we reflect on mirrors!Deboki is hosting a new podcast called Tiny Matters! It’s a science podcast about “the little stuff that makes the big stuff possible!” You can subscribe here! And be sure to follow her on Twitter: @okidoki_bokiHead to https://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!A big thank you to Patreon subscriber Garth Riley for helping to make the show possible!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[The Scientific Definition]Heliographhttps://www.theatlantic.com/photo/2014/04/world-war-i-in-photos-technology/507305/https://www.nps.gov/fobo/learn/historyculture/the-heliograph.htmhttps://books.google.com/books?id=RBC2nY1rp5MC&q=heliograph&pg=PA211#v=snippet&q=heliograph&f=falsePseudoscope http://waywiser.fas.harvard.edu/objects/3538/combination-stereoscope-telestereoscope-and-pseudoscope;jsessionid=ADBDCEF0ECA144094F58FDB5779EB61Bhttps://digitalcommons.bucknell.edu/cinematic/3/https://books.google.com/books?id=0_QMAAAAIAAJ&pg=PA146&dq=pseudoscope&as_brr=1#v=onepage&q=pseudoscope&f=falseEtalon  http://hyperphysics.phy-astr.gsu.edu/hbase/phyopt/fabry.htmlhttps://www.sciencedirect.com/topics/physics-and-astronomy/etalonshttps://www.osapublishing.org/ao/abstract.cfm?uri=ao-5-6-985Reflecting circlehttps://amhistory.si.edu/navigation/type.cfm?typeid=5https://royalsocietypublishing.org/doi/10.1098/rstl.1801.0019Pictures: https://en.wikipedia.org/wiki/Reflecting_instrument#Reflecting_circles[Trivia Question]James Webb Space Telescope mirrorshttps://webb.nasa.gov/content/observatory/ote/mirrors/index.htmlhttps://spaceplace.nasa.gov/telescopes/en/[Fact Off]Enantiomers (mirror versions of chemical compounds)https://spinoff.nasa.gov/Spinoff2004/ch_4.htmlhttps://www.smithsonianmag.com/space/must-all-molecules-life-be-left-handed-or-right-handed-180959956/https://www.diabetes.co.uk/blog/2015/06/the-version-of-sugar-that-wont-affect-your-blood-glucose-levels-and-why-you-cant-have-it/https://www.wired.com/2003/11/newsugar/The Venus Effect (mirror sight-lines) https://www.bertamini.org/lab/venus.htmlhttps://www.semanticscholar.org/paper/The-Venus-effect-in-real-life-and-in-photographs-Bertamini-Lawson/c6d67537323365e8fdae3c7e1b02635c7b1901aa/figure/3[Ask the Science Couch]Super efficient mirrors https://www.scientificamerican.com/article/what-is-the-physical-proc/https://news.mit.edu/1998/mirrorhttp://www.cnn.com/2008/HEALTH/12/19/laser.surgery/index.htmlhttps://physicsworld.com/a/crystalline-supermirrors-cut-optical-losses/https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=14069[Butt One More Thing]Mirror test IBShttps://pubmed.ncbi.nlm.nih.gov/3617051/https://pubmed.ncbi.nlm.nih.gov/16258235/

SciShow Tangents is off again this week, but since it's a new year and all, we thought this was the perfect opportunity to rerun our episode all about ways humans have devised to measure time! See you for a new episode next week!Head to https://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!A big thank you to Patreon subscriber Garth Riley for helping to make the show possible!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

SciShow Tangents is taking a couple weeks off for the holidays, but we aren't gonna leave you hanging! This week, we present an unlocked Patreon patron bonus episode in which we try to stump Ceri with a barrage of science and pop culture questions!Head to https://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!A big thank you to Patreon subscriber Garth Riley for helping to make the show possible!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

The Tangents crew gets lightly festive as they talk about the increasingly-less-cold tippity-top and bippity-bottom of good old planet Earth!Head to https://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!A big thank you to Patreon subscriber Garth Riley for helping to make the show possible!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]Plant species in Arctichttps://pubmed.ncbi.nlm.nih.gov/21988606/[Fact Off]Old Seeds!https://www.nationalgeographic.com/science/article/120221-oldest-seeds-regenerated-plants-science?loggedin=truehttps://www.pnas.org/content/109/10/4008Camel ancestors living in Arctichttps://www.calacademy.org/explore-science/the-camel-an-arctic-animalhttps://www.sciencenews.org/article/camel-ancestors-lived-arctichttps://www.nature.com/articles/ncomms2516https://www.sciencedirect.com/science/article/abs/pii/S0277379111001661#https://www.fda.gov/animal-veterinary/animal-health-literacy/fun-facts-about-reindeer-and-caribou[Ask the Science Couch]Animals/plants in polar night https://www.popsci.com/how-do-animals-survive-polar-night/https://www.theatlantic.com/science/archive/2016/03/arctic-marine-life-polar-night/474870/https://www.sciencedaily.com/releases/2011/05/110526064627.htmhttps://www.nationalgeographic.com/science/article/why-are-reindeer-eyes-golden-in-summer-but-blue-in-winterhttps://www.sciencedirect.com/science/article/pii/S0960982215014323Animals/plants in midnight sunhttps://pubmed.ncbi.nlm.nih.gov/2921307/https://www.livescience.com/62870-summer-solstice-animals.htmlhttps://uphere.ca/articles/what-does-24-hours-light-do-animalshttps://www.alaskacenters.gov/explore/attractions/midnight-sun/effectshttps://beyondpenguins.ehe.osu.edu/issue/polar-plants/plants-of-the-arctic-and-antarctic[Butt One More Thing]Poop bacteria in Antarcticahttps://pubmed.ncbi.nlm.nih.gov/25451839/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4908950/