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Videos uploaded by user “SciShow”
How a Bee Becomes Queen
 
03:59
Royal jelly! For bees, it’s what makes all the difference between a queen and a worker. Hosted by: Hank Green ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Justin Lentz, David Campos, John Szymakowski, Peso255, Jeremy Peng, Avi Yaschin, and Fatima Iqbal. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources: http://www.acs.org/content/acs/en/pressroom/presspacs/2011/acs-presspac-september-21-2011/queen-bee-or-worker-bee-new-insights-into-famous-honeybee-society-caste-system.html http://pubs.acs.org/doi/abs/10.1021/pr200473a http://pubs.acs.org/doi/abs/10.1021/pr200473a?tokenDomain=presspac&tokenAccess=presspac&forwardService=showFullText&journalCode=jprobs http://blogs.discovermagazine.com/80beats/2011/04/26/what-makes-a-queen-bee-one-special-protein-apparently/#.VXevolzBzGc http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3059907/ http://westernfarmpress.com/management/queen-bees-need-more-royal-jelly http://blogs.nature.com/news/2011/04/honey_bees.html http://www.slate.com/articles/health_and_science/science/2012/11/democracy_in_honeybees_and_other_animals_what_humans_can_learn_from_social.single.html http://www.nature.com/nature/journal/v473/n7348/full/nature10093.html http://usabtm.weburl.ro/utilizatori/ZOOTEHNIE/file/REVISTA%202011/vol%2044/2/BIOCHIM/Barnutiu.pdf https://www.flickr.com/photos/usgsbiml/
Views: 4421116 SciShow
So what IS the Higgs boson?
 
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Hank responds to viewer questions, and explains what the Higgs boson particle actually IS. Follow SciShow on Twitter: http://www.twitter.com/scishow Like SciShow on Facebook: http://www.facebook.com/scishow
Views: 942203 SciShow
Bitcoin: How Cryptocurrencies Work
 
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Whether or not it's worth investing in, the math behind Bitcoin is an elegant solution to some complex problems. Hosted by: Michael Aranda Special Thanks: Dalton Hubble Learn more about Cryptography: https://www.youtube.com/watch?v=-yFZGF8FHSg ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters—we couldn't make SciShow without them! Shout out to Bella Nash, Kevin Bealer, Mark Terrio-Cameron, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Benny, Kyle Anderson, Tim Curwick, Will and Sonja Marple, Philippe von Bergen, Bryce Daifuku, Chris Peters, Patrick D. Ashmore, Charles George, Bader AlGhamdi ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://bitinfocharts.com/ https://chrispacia.wordpress.com/2013/09/02/bitcoin-mining-explained-like-youre-five-part-2-mechanics/ https://www.youtube.com/watch?v=Lx9zgZCMqXE https://www.youtube.com/watch?v=nQZUi24TrdI https://bitcoin.org/en/how-it-works http://www.forbes.com/sites/investopedia/2013/08/01/how-bitcoin-works/#36bd8b2d25ee http://www.makeuseof.com/tag/how-does-bitcoin-work/ https://blockchain.info/charts/total-bitcoins https://en.bitcoin.it/wiki/Controlled_supply https://www.bitcoinmining.com/ http://bitamplify.com/mobile/?a=news Image Sources: https://commons.wikimedia.org/wiki/File:Cryptocurrency_Mining_Farm.jpg
Views: 2490630 SciShow
Liquid Fluoride Thorium Reactors (LFTR): Energy for the Future?
 
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Hank addresses a highly requested topic - liquid fluoride thorium reactors - and tells us how LFTR might be the future of energy in ... China? Like SciShow on Facebook: http://www.facebook.com/scishow Follow SciShow on Twitter: http://www.twitter.com/scishow References: http://www.washingtonpost.com/national/health-science/nuclear-power-entrepreneurs-push-thorium-as-a-fuel/2011/12/15/gIQALTinPR_story.html http://theweek.com/article/index/213611/could-thorium-make-nuclear-power-safe
Views: 589744 SciShow
Tardigrades: Adorable Extremophiles
 
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Hank explains why NASA and the European Space Agency are in love with tardigrades and how these extremophiles are helping us study the panspermia hypothesis. Follow SciShow on Twitter! http://www.twitter.com/scishow Like SciShow on Facebook! http://www.facebook.com/scishow
Views: 1210176 SciShow
Strong Interaction: The Four Fundamental Forces of Physics #1a
 
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Part one of a four part series on the fundamental forces (or interactions) of physics begins with the strong force or strong interaction - which on the small scale holds quarks together to form protons, neutrons and other hadron particles. Like SciShow on Facebook: http://www.facebook.com/scishow Follow SciShow on Twitter: http://www.twitter.com/scishow
Views: 771827 SciShow
Honey: Bacteria's Worst Enemy
 
04:20
It may not look like it sitting in that cute bear bottle, but honey is a supercharged bacteria-killing powerhouse! Learn more about hydrogen peroxide: https://www.youtube.com/watch?v=vVSC79nxCvI Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Coda Buchanan, Lucy McGlasson, Accalia Elementia, Mark Terrio-Cameron, Saul, Kathy & Tim Philip, Kevin Bealer, Christopher Collins, Thomas J., charles george, Andreas Heydeck, Patrick D. Ashmore, Justin Lentz, Will and Sonja Marple, Ed Shelley, Chris Peters, Tim Curwick, Philippe von Bergen, Fatima Iqbal. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: http://www.ncbi.nlm.nih.gov/pubmed/22095907 http://pubs.acs.org/doi/abs/10.1021/ed084p1643?journalCode=jceda8 http://www.compoundchem.com/2014/08/21/chemistryofhoney/ https://edis.ifas.ufl.edu/aa142 http://www.sciencedirect.com/science/article/pii/S0278691510003959 http://www.scientificamerican.com/article/how-do-salt-and-sugar-pre/ http://www.livescience.com/33061-why-does-hydrogen-peroxide-fizz-on-cuts.html http://emedicine.medscape.com/article/961833-overview#a5 Images: https://commons.wikimedia.org/wiki/File:Cueva_arana.jpg https://commons.wikimedia.org/wiki/File:Cristallizzazione_del_miele_IMG_0371.JPG https://commons.wikimedia.org/wiki/File:77_1gpe.png https://commons.wikimedia.org/wiki/File:Apis_mellifera_Portrait.jpg https://en.wikipedia.org/wiki/Methylglyoxal#/media/File:Pyruvaldehyde.svg https://commons.wikimedia.org/wiki/File:Manuka_flowers_and_native_bee.jpg
Views: 1948724 SciShow
What Happens if Your Body is Exposed to the Vacuum of Space?
 
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Hank answers a SciShow viewer's most pressing question about what happens if the human body gets exposed to space. Would your head really explode? Like SciShow? http://www.facebook.com/scishow Follow SciShow! http://www.twitter.com/scishow T*umbl SciShow. http://scishow.tumblr.com References http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/970603.html http://blogs.discovermagazine.com/badastronomy/2012/01/31/qba-what-happens-if-you-are-exposed-to-the-vacuum-of-space/#.UMGD-pPjn0g
Views: 1485128 SciShow
Epigenetics
 
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Hank & his clone Circus Hank explain the power of epigenetics, which studies the factors that determine how much or whether some genes are expressed in your body. Like SciShow on Facebook! http://www.facebook.com/scishow Follow SciShow on Twitter! http://www.twitter.com/scishow More SciShow! Solar Energy - http://youtu.be/4uPVZUTLAvA Foldit Gamers FTW - http://youtu.be/JdBcpdH_ptA
Views: 1784292 SciShow
Where Do Domestic Cats Come From?
 
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Do you give ancient Egypt credit for the domestication of cats? That’s what many people think! But, with some new evidence, it seems that cats became our cuddly counterparts a little further east and because of an emerging pest problem. Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Bryce Daifuku, Kevin Bealer, Justin Lentz, Mark Terrio-Cameron, Patrick Merrithew, Accalia Elementia, Fatima Iqbal, Benny, Kyle Anderson, Mike Frayn, Tim Curwick, Will and Sonja Marple, Philippe von Bergen, Chris Peters, Kathy Philip, Patrick D. Ashmore, Thomas J., Charles George, Bader AlGhamdi. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: http://www.sciencemag.org/news/2016/01/were-cats-domesticated-more-once http://www.sciencemag.org/news/2013/12/when-cats-became-comrades http://www.pnas.org/content/111/1/116 http://www.smithsonianmag.com/history/a-brief-history-of-house-cats-158390681/?no-ist http://www.pnas.org/content/111/48/17230.abstract http://www.sciencemag.org/news/2014/11/genes-turned-wildcats-kitty-cats http://www.slate.com/articles/health_and_science/science/2015/07/cat_domestication_debate_over_hunting_tameness_docility_affection_feral.html http://www.livescience.com/48696-origins-of-cat-domestication.html http://science.sciencemag.org/content/317/5837/519 http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0147295 Images: Egyptian Tomb Carvings: https://commons.wikimedia.org/wiki/File:Sarcophagus_of_Prince_Thutmose%27s_cat_by_Madam_Rafa%C3%A8le.jpg Bastet:https://commons.wikimedia.org/wiki/File:Bastet_Istanbul_museum.JPG Fertile Crescent: https://commons.wikimedia.org/wiki/File:Fertile_Crescent_map.png African Wild Cat: https://commons.wikimedia.org/wiki/File:AfricanWildCat.jpg Wild Cat 2: https://commons.wikimedia.org/wiki/File:Felis_Lybica_Sarda_05.JPG Leopard Cat: https://commons.wikimedia.org/wiki/File:Leopard_Cat_Tennoji.jpg Leopard Cat Night: https://commons.wikimedia.org/wiki/File:Leopard_cat_India.jpg
Views: 793847 SciShow
IDTIMWYTIM: Radiation
 
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Hank explains the whole story about radiation - the good, the extremely helpful, and the bad. Like SciShow on Facebook: http://www.facebook.com/scishow Follow SciShow on Twitter: http://www.twitter.com/scishow
Views: 480332 SciShow
Oklo, the Two Billion Year Old Nuclear Reactor
 
04:34
SciShow takes you to a uranium deposit in Africa where, eons ago, a unique set of conditions came together to form the world’s only known natural nuclear reactor. Check it out! No radiation suit required! Hosted by: Hank Green ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources:
Views: 2094114 SciShow
Why No Giant Mammals?
 
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Hank gives a quick run-down of the reasons scientists think the land mammals of today are nowhere near the size of the largest sauropods. Some of them might surprise you! If you liked this video, check out more videos about natural history and paleontology on SciShow's sister channel, Eons: https://www.youtube.com/eons Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow -- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com SOURCES http://news.discovery.com/animals/how-dinosaurs-got-so-big-120131.html http://dinosaurs.about.com/od/dinosaurevolution/a/bigdinos.htm http://www.newscientist.com/article/dn19771-why-mammals-grew-big--and-then-stopped.html http://www.scientificamerican.com/article.cfm?id=land-size-limits-body-size http://ngm.nationalgeographic.com/ngm/0507/resources_who.html http://earthsky.org/earth/felisa-smith-why-mammals-havent-out-sized-biggest-dinosaurs http://www.sciencemag.org/content/330/6008/1216.abstract http://www.cam.ac.uk/research/features/mammals-vs-dinosaurs http://blogs.smithsonianmag.com/dinosaur/2012/06/when-mammals-ate-dinosaurs/ http://svpow.com/2013/02/19/personal-milestones-publishing-the-ph-d http://www.slate.com/articles/news_and_politics/explainer/2009/02/a_snake_the_size_of_a_plane.html http://www.dinodatabase.com/dinorcds.asp http://voices.yahoo.com/indricotherium-largest-land-mammal-ever-237482.html http://science.kqed.org/quest/2010/03/17/the-largest-land-mammal-that-ever-lived/ http://phenomena.nationalgeographic.com/2013/02/25/dinosaur-reproduction-not-ancient-gravity-made-sauropods-super-sized/ http://www.popsci.com/science/article/2012-02/hot-weather-makes-mammals-smaller-%E2%80%94%C2%A0what-does-mean-global-warming http://scienceline.ucsb.edu/getkey.php?key=427 http://www.smithsonianmag.com/science-nature/dinosaurs/How-to-Build-a-Giant-Dinosaur.html http://www.plosone.org/article/info:doi/10.1371/journal.pone.0028442 http://www.nmfs.noaa.gov/pr/species/mammals/cetaceans/bluewhale.htm
Views: 1774139 SciShow
Migraines: Not Just Another Headache
 
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If you've never had a migraine, you might think it's just a really bad headache. But if you've ever had them, or you know someone who does, you know that they're much worse -- and much more complicated -- than that. Hank explains the biology behind this disorder of the central nervous system, and how it can be treated. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources: http://www.mayoclinic.org/diseases-conditions/migraine-headache/basics/definition/con-20026358 http://www.migrainetrust.org/factsheet-migraine-what-is-it-10504 https://www.lef.org/protocols/health_concerns/migraine_03.htm http://www.ncbi.nlm.nih.gov/pubmed/17970989 http://umm.edu/health/medical/reports/articles/migraine-headaches http://www.huffingtonpost.com/2014/02/10/what-not-to-say-to-people-with-migraine_n_4745863.html
Views: 963230 SciShow
Warp Drives!
 
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Hank talks about how warp drives could potentially work. Like SciShow! http://www.facebook.com/scishow Follow SciShow! http://www.twitter.com/scishow T*mbl SciShow! http://scishow.tumblr.com References and licenses for this episode can be found in the Google document here: http://dft.ba/-3wrS
Views: 980402 SciShow
5 of the World's Most Dangerous Chemicals
 
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They explode when you touch them. Even a millionth of a gram can kill you. They can even disable you with their horrifying smell. SciShow introduces you to give of the most dangerous chemicals in the world. Hosted by: Hank Green ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources: http://pipeline.corante.com/archives/things_i_wont_work_with/ http://web.archive.org/web/20060318221608/http://www.airproducts.com/nr/rdonlyres/8479ed55-2170-4651-a3d4-223b2957a9f3/0/safetygram39.pdf http://www.bunkertours.co.uk/germany_2004.htm http://onlinelibrary.wiley.com/doi/10.1002/anie.201100300/abstract http://www2.chemistry.msu.edu/courses/CEM958/10-11/talks/Spahlinger.pdf http://www.atsdr.cdc.gov/csem/csem.asp?csem=6&po=12 http://books.google.com.au/books?id=MSDOAAAAMAAJ&pg=RA3-PA6&lpg=RA3-PA6&dq=smell+thioacetone&source=bl&ots=X0UH-GWpAa&sig=5wmkE-x9ZTWlWq5mCb6aQ9Argvw&hl=en&ei=14IoSoXQAtuptgeX0-jWBQ&sa=X&oi=book_result&ct=result&redir_esc=y http://www.ebah.com.br/content/ABAAAe2O8AA/clayden-greeves-organic-chemistry https://www.princeton.edu/~achaney/tmve/wiki100k/docs/Thiol.html http://webbook.nist.gov/cgi/cbook.cgi?ID=C4756052&Mask=8 http://www.psc.edu/science/Klein2000/getting_jump_on_superacids.pdf http://www.realclearscience.com/blog/2013/08/the-worlds-strongest-acids.html http://science.howstuffworks.com/acid-info.htm http://pipeline.corante.com/archives/2013/01/09/things_i_wont_work_with_azidoazide_azides_more_or_less.php http://onlinelibrary.wiley.com/doi/10.1002/anie.201100300/abstract http://web.archive.org/web/20060318221608/http://www.airproducts.com/nr/rdonlyres/8479ed55-2170-4651-a3d4-223b2957a9f3/0/safetygram39.pdf http://www.purdue.edu/ehps/rem/hmm/pyro.htm
Views: 6160149 SciShow
Does Alcohol Kill Brain Cells?
 
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Quick Questions explains what alcohol does -- and doesn’t do -- to your brain cells. Enjoy this episode responsibly! Hosted by: Michael Aranda ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources: http://www.nytimes.com/2004/11/23/health/23real.html?_r=0 http://gizmodo.com/drinking-alcohol-doesnt-actually-kill-brain-cells-1498785941 http://mentalfloss.com/article/49024/does-drinking-kill-brain-cells http://www.theatlantic.com/health/archive/2011/01/good-news-alcohol-doesnt-actually-kill-brain-cells/70082/ http://www2.potsdam.edu/alcohol/HealthIssues/1103162109.html#.U98Ny_mwIli http://science.howstuffworks.com/life/inside-the-mind/human-brain/10-brain-myths9.htm http://www.nature.com/scitable/blog/brain-metrics/are_there_really_as_many http://pubs.niaaa.nih.gov/publications/arh294/245-255.htm
Views: 726119 SciShow
The Physics of the Weird and Wonderful Theremin
 
03:58
Electronic music is older than you may think. Enter the theremin - a device that turns your body into part of a capacitor, and allows you to play music without even touching an instrument! Special thanks to Jay Bruns of nojayart.com for lending us his theremin, and Mike Emmons for setting up our meeting. Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Coda Buchanan, Lucy McGlasson, Accalia Elementia, Mark Terrio-Cameron, Saul, Kathy & Tim Philip, Kevin Bealer, Christopher Collins, Thomas J., charles george, Andreas Heydeck, Patrick D. Ashmore, Justin Lentz, Will and Sonja Marple, Ed Shelley, Chris Peters, Tim Curwick, Philippe von Bergen, Fatima Iqbal. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: http://web.physics.ucsb.edu/~lecturedemonstrations/Composer/Pages/60.17.html http://electronics.howstuffworks.com/gadgets/audio-music/theremin.htm http://www.animations.physics.unsw.edu.au/jw/LCresonance.html http://www.facstaff.bucknell.edu/mastascu/elessonshtml/lc/capac1.htm https://books.google.com/books?id=6DHlQJcMpBQC http://web.physics.ucsb.edu/~lecturedemonstrations/Composer/Pages/44.51.html http://hyperphysics.phy-astr.gsu.edu/hbase/sound/beat.html#c3
Views: 824670 SciShow
Why (and How) Do Bees Make Honey?
 
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Quick Questions explains how some bees can transform flower nectar into the liquid gold that you use to sweeten your tea. Hosted by: Hank Green ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources: http://www.livescience.com/37611-what-is-honey-honeybees.html http://web.ncsu.edu/abstract/science/how-do-bees-make-honey/ http://www.theguardian.com/lifeandstyle/2013/aug/10/how-bees-make-honey-ask-a-grown-up http://animals.howstuffworks.com/insects/question300.htm http://insects.about.com/od/antsbeeswasps/p/honeybeesociety.htm
Views: 520786 SciShow
The Science of Hangovers
 
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So what exactly is it that makes a hangover suck so hard? Turns out there are three things interacting to make you feel miserable. Hank's got the details in this episode of SciShow. (Having déjà vu? This video was accidentally uploaded earlier in the week, prior to its scheduled posting date, and without a description or annotations. We removed that video and have uploaded this video, which is the same as that one, but with those assets. Sorry for any confusion!) Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow -- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com SOURCES http://www.mayoclinic.com/health/hangovers/DS00649 http://www.nytimes.com/2011/12/29/fashion/new-products-to-treat-hangovers.html?_r=0 http://www.scientificamerican.com/article.cfm?id=why-do-hangovers-occur http://urbanlegends.about.com/gi/o.htm?zi=1/XJ&zTi=1&sdn=urbanlegends&cdn=newsissues&tm=443&f=20&su=p504.6.342.ip_&tt=2&bt=1&bts=10&zu=http%3A//www.bbc.co.uk/dna/h2g2/alabaster/A103140 http://science.howstuffworks.com/life/human-biology/hangover.htm http://www.popsci.com/science/article/2012-05/fyi-can-drinking-moonshine-really-make-me-go-blind http://pubs.niaaa.nih.gov/publications/aa55.htm http://www.theatlantic.com/magazine/archive/2012/09/does-tequila-make-us-crazy/309058/
Views: 733791 SciShow
What Stephen Hawking Really Said About Black Holes
 
04:28
Hank explains the science behind recent reports that physics great Stephen Hawking said "there are no black holes." There are. They're just super complicated. ---------- Messages from our Subbable subscribers: Happy Valentine's Day my beautiful panda. I love you. I love you Steve- almost as much as Science. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources: http://arxiv.org/abs/1401.5761 http://arxiv.org/pdf/1401.5761v1.pdf http://www.popularmechanics.com/science/space/deep/no-black-holes-heres-what-stephen-hawking-actually-said-16442205?src=spr_TWITTER&spr_id=1457_42616980 http://www.pbs.org/newshour/updates/hawking-meant-black-holes/
Views: 1562382 SciShow
Why Do I Feel Lightheaded When I Stand Up?
 
02:23
Have you ever stood up and felt a bit dizzy and lightheaded? Learn why it happens in this SciShow Quick Question! Hosted by: Michael Aranda ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Accalia Elementia, Kathy & Tim Philip, Kevin Bealer, Justin Lentz, Fatima Iqbal, Linnea Boyev, Tomasz Jonarski, Chris Peters, Philippe von Bergen, Will and Sonja Marple, and Mark Terrio-Cameron. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Links to Other Videos: https://www.youtube.com/watch?v=GvvH9gd1Njk Sources: http://www.mayoclinic.org/diseases-conditions/low-blood-pressure/basics/definition/con-20032298 http://www.aafp.org/afp/2003/1215/p2393.html http://www.medicinenet.com/orthostatic_hypotension/page2.htm#what_is_orthostatic_hypotension http://www.webmd.com/a-to-z-guides/hypotension-orthostatic http://www.wisegeekhealth.com/what-is-a-head-rush.htm http://www.heart.org/HEARTORG/Conditions/HighBloodPressure/AboutHighBloodPressure/Understanding-Blood-Pressure-Readings_UCM_301764_Article.jsp#.VsOMLrQ4Gt8
Views: 543027 SciShow
Why Do I Have Tonsil Stones?
 
02:23
If you found the whiteish-yellowish lump on your throat, that might be a tonsil stone. But where does the lump come from? Why do you have it? Hosted by: Michael Aranda Want more SciShow in person? We'll be at NerdCon: Nerdfighteria in Boston on February 25th and 26th! For more information, go to http://www.nerdconnerdfighteria.com/ ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters—we couldn't make SciShow without them! Shout out to Jeremy Peng, Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Benny, Kyle Anderson, Tim Curwick, Scott Satovsky Jr, Will and Sonja Marple, Philippe von Bergen, Bella Nash, Bryce Daifuku, Chris Peters, Saul, Patrick D. Ashmore, Charles George, Bader AlGhamdi ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: http://www.nytimes.com/2009/09/01/health/01tons.html https://www.ncbi.nlm.nih.gov/pubmed/17372553 http://www.sciencedirect.com/science/article/pii/S1286457906002280 http://scienceline.ucsb.edu/getkey.php?key=3273 http://www.livescience.com/26983-lymphatic-system.html http://medcell.med.yale.edu/histology/immune_system_lab/palatine_tonsil.php https://www.ncbi.nlm.nih.gov/pubmed/19716006 Image Sources: https://commons.wikimedia.org/wiki/File:Tonsillolith_in_mouth.jpg https://commons.wikimedia.org/wiki/File:Throat_with_Tonsils_0012J.jpeg
Views: 974510 SciShow
Plasma, The Most Common Phase of Matter in the Universe
 
03:33
Get to know plasma, the most common, but probably least understood, phase of matter in the universe! Hosted by: Michael Aranda ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources: http://www.universetoday.com/84361/plasma/ http://www.scientificamerican.com/article/quotwhat-causes-the-stran/ http://www.plasmacoalition.org/plasma_writeups/lightning.pdf http://ec.europa.eu/research/energy/euratom/index_en.cfm?pg=fusion&section=plasma-physics http://education.jlab.org/qa/plasma_02.html http://science.howstuffworks.com/nature/natural-disasters/lightning.htm http://www.universetoday.com/50734/states-of-matter/ http://home.howstuffworks.com/fluorescent-lamp.htm http://science.howstuffworks.com/environmental/energy/plasma-converter.htm http://csep10.phys.utk.edu/astr162/lect/light/ionization.html Images: http://en.wikipedia.org/wiki/Erasmus_of_Formia#mediaviewer/File:Falkensteiner_Retabel_Drehfl%C3%BCgel_rechts_au%C3%9Fen.jpg http://en.wikipedia.org/wiki/St._Elmo%27s_fire#mediaviewer/File:Elmo%27s_fire-2.jpg http://en.wikipedia.org/wiki/William_Crookes#mediaviewer/File:Sir_William_Crookes_1906.jpg http://commons.wikimedia.org/wiki/File:PSM_V48_D855_Crookes_tubes.jpg http://commons.wikimedia.org/wiki/File:Gerds_plasma.jpg http://en.wikipedia.org/wiki/Star#mediaviewer/File:The_Sun_by_the_Atmospheric_Imaging_Assembly_of_NASA%27s_Solar_Dynamics_Observatory_-_20100819.jpg http://commons.wikimedia.org/wiki/File:Lightning3.jpg
Views: 750362 SciShow
Why Can't You Remember Being a Baby?
 
02:43
You're pretty sure being a baby was awesome, but why can't you actually remember any of it? Hosted by: Michael Aranda ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Accalia Elementia, Kathy & Tim Philip, Kevin Bealer, Justin Lentz, Fatima Iqbal, Linnea Boyev, Tomasz Jonarski, Chris Peters, Philippe von Bergen, Will and Sonja Marple, and Mark Terrio-Cameron. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: http://www.ncbi.nlm.nih.gov/pubmed/26... http://www.nimh.nih.gov/about/directo... https://www.psychologytoday.com/blog/... http://mentalfloss.com/article/12330/... http://www.npr.org/sections/health-sh... http://science.sciencemag.org/content...
Views: 589364 SciShow
Why Is Only Half of My Nose Working?
 
02:49
Ever notice how one side of your nose always seems to be more stuffed than the other? What’s up with that? Quick Questions knows! Hosted by: Hank Green ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Christopher Prevoe, Justin Ove, John Szymakowski, Peso255, Ruben Galvao, Fatima Iqbal, Justin Lentz, and David Campos. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources:http://mentalfloss.com/article/30363/why-does-your-nose-get-stuffy-one-nostril-time http://www.abc.net.au/science/articles/2000/11/01/198395.htm?site=science/greatmomentsinscience http://news.stanford.edu/news/1999/november10/smell-1110.html http://www.emptynosesyndrome.org/turbinate-tutorial/role-of-turbinates-humidification/ http://www.ncbi.nlm.nih.gov/pubmed/23576311
Views: 1520266 SciShow
What are Blood Types?
 
03:05
Quick Questions explains why, when it comes right down to it, there are really only eight kinds of people in the world. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources: http://www.ncbi.nlm.nih.gov/books/NBK2261/ http://www.nobelprize.org/educational/medicine/landsteiner/readmore.html http://anthro.palomar.edu/blood/Rh_system.htm http://www.nlm.nih.gov/medlineplus/ency/article/002223.htm http://www.rcsb.org/pdb/101/motm.do?momID=21 http://learn.genetics.utah.edu/content/inheritance/blood/ http://www.northshore.org/community-events/donating-blood/blood-types/ http://www.redcrossblood.org/learn-about-blood/blood-types
Views: 1382207 SciShow
What's Causing That Stitch in Your Side?
 
02:44
What's the deal with that sharp pain in your side when you're trying to win that marathon? SciShow has the answers! Hosted by: Hank Green ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Chris Peters, Philippe von Bergen, Fatima Iqbal, John Murrin, Linnea Boyev, Justin Lentz, and David Campos. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4281377/ http://bjsm.bmj.com/content/37/4/287.full http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2796944/ http://www.businessinsider.com/what-are-side-stitches-2015-2 Images: https://commons.wikimedia.org/wiki/File:Respiratory_system.svg https://commons.wikimedia.org/wiki/File:Gray1035.png
Views: 1768798 SciShow
What Happens If You're Struck By Lightning?
 
04:00
The chances of you being hit by lightning are small by comparison, but it does happen! Hank will go through what ultimately happens when you are struck by lightning because chances are you will survive to tell it to your friends. Like SciShow? Want to get cool things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow -- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources for this episode: http://www.npr.org/blogs/theprotojournalist/2013/07/17/200140433/the-randomness-of-lightning-fatalities-a-mapstory?utm_source=npr&utm_medium=facebook&utm_campaign=20130717 http://www.bbc.com/future/story/20120926-what-causes-lightening/2 http://science.howstuffworks.com/nature/climate-weather/storms/struck-by-lightning.htm http://www.washingtonpost.com/blogs/capital-weather-gang/wp/2013/05/08/ten-shocking-things-that-can-happen-if-you-are-struck-by-lightning/ http://twistedsifter.com/2012/03/lichtenberg-figures-lightning-strike-scars/ http://www.lightning-strike.org/DesktopDefault.aspx http://www.afms.af.mil/news/story.asp?id=123316472 http://www.slate.com/articles/news_and_politics/dispatches/2005/06/dont_stand_by_me.html http://www.nytimes.com/1983/09/30/obituaries/roy-sullivan.html http://discovertheodds.com/what-are-the-odds-of-being-struck-by-lightning/ http://news.nationalgeographic.com/news/2004/06/0623_040623_lightningfacts.html http://mddirect.org/2012/08/06/when-lightning-strikes/
Views: 1086546 SciShow
Absolute Zero: Absolute Awesome
 
03:16
Hank explains absolute zero: -273.15 degrees Celsius - and the coldest place in the known universe may surprise you. A correction on our use of the phrase "degrees Kelvin" can be found in this video: http://www.youtube.com/watch?v=OA98hl7Q5dQ - beginning at 6:43. Like SciShow on Facebook: http://www.facebook.com/scishow Follow SciShow on Twitter: http://www.twitter.com/scishow References: Minimum zero point energy derived from uncertainty principle: http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/hosc4.html#c1
Views: 1666757 SciShow
Graphene: The Next Big (But Thin) Thing
 
04:48
If you haven't heard of it before, you have now. And it may prove to be the next big thing in materials science. SciShow explains what it is, why it's so awesome, and what challenges we face in harnessing its amazing properties. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources: http://www.ibtimes.com/what-graphene-5-incredible-facts-about-miracle-material-you-need-know-1399503 http://www.pnas.org/content/early/2013/07/09/1222276110 http://www.understandingnano.com/what-is-graphene.html http://www.newscientist.com/special/instant-expert-graphene http://www.physics.org/article-questions.asp?id=67 http://www.scientificamerican.com/article/geim-novoselov-physics-novel/
Views: 979287 SciShow
What Causes Pins and Needles?
 
02:26
Ever wondered what causes that strange tingling feeling? Well, settle in as Quick Questions explains how it works. Just be careful how you sit. Hosted by: Hank Green ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Justin Lentz, David Campos, Chris Peters, and Fatima Iqbal. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources: http://www.ninds.nih.gov/disorders/paresthesia/paresthesia.htm http://mentalfloss.com/article/21035/why-do-limbs-fall-asleep http://www.livescience.com/33727-pins-needles-sensation.html http://www.ncbi.nlm.nih.gov/pubmed/20592403 http://www.betterhealth.vic.gov.au/bhcv2/bhcarticles.nsf/pages/Pins_and_needles http://www.nhs.uk/conditions/Pins-and-needles/Pages/Introduction.aspx
Views: 868342 SciShow
IDTIMWYTIM: Heisenberg Uncertainty Principle
 
03:16
The Heisenberg Uncertainty Principle might not mean what you think it means: Hank clears things up for us in this edition of IDTIMWYTIM, by distinguishing between the Uncertainty Principle and the Observer Effect, which are often conflated. Like SciShow on Facebook: http://www.facebook.com/scishow Follow SciShow on Twitter: http://www.twitter.com/scishow References: http://hyperphysics.phy-astr.gsu.edu/hbase/uncer.html http://science.howstuffworks.com/innovation/science-questions/quantum-suicide2.htm http://www.aip.org/history/heisenberg/p08.htm
Views: 543241 SciShow
3 Things You Didn't Know About Voyager
 
03:18
Hank tells us three things we probably didn't know about the Voyager 1 spacecraft. Like SciShow on Facebook! http://www.facebook.com/scishow Follow SciShow on Twitter! http://www.twitter.com/scishow References for this episode can be found in the Google document here:http://dft.ba/-3p-e
Views: 413725 SciShow
Game Theory: The Science of Decision-Making
 
09:50
With up to ten years in prison at stake, will Wanda rat Fred out? Game theory is looking at human interactions through the lens of mathematics. Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Kevin Bealer, Justin Lentz, Mark Terrio-Cameron, Patrick Merrithew, Accalia Elementia, Fatima Iqbal, Benny, Kyle Anderson, Mike Frayn, Tim Curwick, Will and Sonja Marple, Philippe von Bergen, Chris Peters, Kathy Philip, Patrick D. Ashmore, Thomas J., charles george, and Bader AlGhamdi. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://www.khanacademy.org/economics-finance-domain/microeconomics/nash-equilibrium-tutorial http://levine.sscnet.ucla.edu/general/whatis.htm http://assets.cambridge.org/97805213/61774/sample/9780521361774ws.pdf https://www.youtube.com/watch?v=qcLZMYPdpH4 http://link.springer.com/chapter/10.1007/978-1-349-20181-5_1 http://www.gametheory.net/dictionary/Game.html Image Links: https://en.wikipedia.org/wiki/John_Forbes_Nash_Jr.
Views: 1563352 SciShow
Should You Use Hydrogen Peroxide to Clean Wounds?
 
02:11
Hydrogen Peroxide: It fizzes, it stings, but does it actually do you any good? Find out on this week's Quick Question! Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Fatima Iqbal, Linnea Boyev, Kathy & Tim Philip, Kevin Bealer, Justin Lentz, Chris Peters, and Philippe von Bergen. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources:
Views: 686362 SciShow
3 Whack Weather Phenomena
 
04:38
Hank describes three of the whackest weather phenomena on Earth: atmospheric rivers, fire tornadoes, and ball lightning. Super interesting and super weird. Like SciShow: http://www.facebook.com/scishow Follow SciShow: http://www.twitter.com/scishow T*mbl SciShow: scishow.tumblr.com References for this episode can be found in the Google document: http://dft.ba/-3sdO
Views: 418368 SciShow
Your Brain is Plastic
 
04:08
Educators, follow @IntelEDU on Twitter and visit http://intel.com/rightdevice for exclusive lesson plans, classroom tech ideas and to learn more about advancing education worldwide. Hank explains the gift that your brain gives you every day: the gift of neural plasticity -- the ways in which your brain actually changes at the cellular level as you learn. ------------------------ Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com --------------------- Sources: http://faculty.washington.edu/chudler/plast.html http://nichcy.org/schoolage/effective-practices/brain101#learning http://www.ncbi.nlm.nih.gov/pubmed/17024677 http://www.sciencedaily.com/releases/2011/02/110203141837.htm http://sharpbrains.com/blog/2008/02/26/brain-plasticity-how-learning-changes-your-brain/
Views: 690934 SciShow
Can We Get to Alpha Centauri?
 
03:41
You like space exploration, and we like space exploration. So why aren't we investigating our closest to galactic neighbor, the triple star system Alpha Centauri? Is it time to give interstellar travel a shot? How would we do it? Hank explains our options, and lays out the challenges. Short version: You're gonna have to be patient! Like SciShow? Want to get cool things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow -- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources for this episode: http://www.nytimes.com/2013/06/11/science/space/scientists-cast-doubt-on-the-closest-exoplanet.html?_r=1& http://news.discovery.com/space/alien-life-exoplanets/time-to-plan-for-a-millennium-mission-to-alpha-centauri-130617.htm http://blogs.discovermagazine.com/badastronomy/2012/10/16/alpha-centauri-has-a-planet/#.Uilb1JJt5r8 http://www.space.com/5094-alpha-centauri.html http://earthsky.org/space/alpha-centauri-travel-time http://www.nbcnews.com/id/49469723/ns/technology_and_science-space/t/alpha-centauri-mission-make-it-so-experts-say/#.UilebpJt5r8 http://www.theatlantic.com/technology/archive/2012/10/could-we-one-day-send-humans-to-the-newly-discovered-planet-orbiting-alpha-centauri-b/263765/
Views: 881058 SciShow
How to Supercool Water: A SciShow Experiment
 
03:46
Water doesn’t always freeze when it’s supposed to. Learn about supercooling, and how to supercool a bottle of water at home -- and then turn it to ice instantly! Hosted by: Michael Aranda ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources:
Views: 728109 SciShow
3 Surprising Things Matter Does Under Extreme Pressure
 
05:19
To support SciShow and learn more about Brilliant, go to https://brilliant.org/scishow/ Things get weird under pressure. We're conducting a survey of our viewers! If you have time, please give us feedback: https://www.surveymonkey.com/r/SciShowSurvey2017 Hosted by: Michael Aranda ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters: Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Inerri, D.A. Noe, Charles Southerland, Fatima Iqbal, سلطان الخليفي, Nicholas Smith, Tim Curwick, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Chris Peters, Patrick D. Ashmore, Piya Shedden, Charles George ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://www.chemistryworld.com/news/controversial-metallic-hydrogen-claim-under-new-scrutiny-/2500534.article https://www.chemistryworld.com/news/has-metallic-hydrogen-been-discovered/2500516.article https://www.missionjuno.swri.edu/jupiter/the-interior?show=hs_jupiter_the-interior_story_a-dive-into-jupiter https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116.255501 http://www.ph.ed.ac.uk/news/2016/probing-dark-hydrogen-giant-planets-16-06-23 http://www.csec.ed.ac.uk/research-highlights/squeezing-oil-and-water-until-they-mix http://advances.sciencemag.org/content/advances/3/8/e1700240.full.pdf https://carnegiescience.edu/news/metal-insulator-and-back-again https://www.chemistryworld.com/news/metals-lose-identity-under-pressure-/3002474.article https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.156403 http://www.nature.com/nature/journal/v458/n7235/abs/nature07827.html? http://hyperphysics.phy-astr.gsu.edu/hbase/Solids/band.html https://www.aocs.org/stay-informed/read-inform/featured-articles/emulsions-making-oil-and-water-mix-april-2014 http://www1.lsbu.ac.uk/water/supercritical_water.html https://www.space.com/35606-helium-compounds-giant-planet-interiors.html https://arxiv.org/pdf/1309.3827.pdf https://www.sciencenews.org/article/heliums-inertness-defied-high-pressure-compound https://www.forbes.com/sites/carmendrahl/2017/02/07/helium-sodium-compound-pressure/ http://pubs.acs.org/doi/abs/10.1021/ja00877a042 https://www.scientificamerican.com/article/saturn-s-core-might-be-cloaked-in-a-neon-shield/ http://www.pnas.org/content/112/26/7925.full.pdf https://www.nature.com/articles/srep34896 http://www.nature.com/nature/journal/v406/n6798/abs/406874a0.html https://solarsystem.nasa.gov/galleries/juno-how-do-jupiter-and-earth-compare Images: https://commons.wikimedia.org/wiki/File:Diamond_Anvil_Cell_-_Cross_Section.svg https://commons.wikimedia.org/wiki/File:Methane-CRC-MW-3D-balls.png https://commons.wikimedia.org/wiki/File:Titan_multi_spectral_overlay.jpg https://commons.wikimedia.org/wiki/File:Triton_moon_mosaic_Voyager_2_(large).jpg https://en.wikipedia.org/wiki/File:Jupiter_and_its_shrunken_Great_Red_Spot.jpg
Views: 714001 SciShow
Quantum Computing Breakthrough
 
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Quantum physics is weird. But quantum computing could be awesome! Learn how scientists took a big leap this week toward making quantum computers a reality. For a free book from Audible, go to: http://www.audible.com/t1/30DayGoldFT_at?source_code=PDTGB0009PD010214 ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Justin Lentz, David Campos, Philippe von Bergen, Chris Peters, Lilly Grainger, Happy Birthday!!, and Fatima Iqbal. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources: http://www.eurekalert.org/pub_releases/2015-10/cp-aso092815.php http://www.livescience.com/39961-chernobyl.html http://www.nuclearflower.com/zone/zone08.html http://animals.nationalgeographic.com.au/animals/mammals/przewalskis-horse/ http://www.eurekalert.org/pub_releases/2015-10/uons-cho100215.php http://whatis.techtarget.com/definition/logic-gate-AND-OR-XOR-NOT-NAND-NOR-and-XNOR https://www.youtube.com/watch?v=g_IaVepNDT4 http://gizmodo.com/worlds-first-silicon-quantum-logic-gate-brings-quantum-1734653115 http://www.sciencealert.com/australian-engineers-have-put-quantum-technology-in-a-silicon-chip-for-the-first-time
Views: 691350 SciShow
The Oversized Invasive Carrot That Can Give You Third Degree Burns
 
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All plants get energy from the sun, but the giant hogweed gets another, dangerous superpower from the sun's light: the ability to burn skin with its sap. Hosted by: Michael Aranda Head to https://scishowfinds.com/ for hand selected artifacts of the universe! ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters: Lazarus G, Sam Lutfi, D.A. Noe, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Patrick D. Ashmore, Tim Curwick, charles george, Kevin Bealer, Chris Peters ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: http://www.ktva.com/story/38658625/giant-hogweed-sends-va-teen-to-hospital-burn-unit https://www.dec.ny.gov/animals/39809.html https://www.nytimes.com/2018/07/02/us/giant-hogweed-nyt.html https://www.snopes.com/fact-check/giant-hogweed-toxicity-warning/ https://www.dec.ny.gov/animals/72934.html https://www.nwcb.wa.gov/weeds/giant-hogweed https://www.sciencedirect.com/topics/neuroscience/furanocoumarins https://ecosystems.psu.edu/research/centers/private-forests/news/2014/what-makes-invasive-plants-successful https://ukntrees.ca.uky.edu/Treetalk/invasive-characteristics https://www.cambridge.org/core/journals/seed-science-research/article/limited-evidence-for-allelopathic-effects-of-giant-hogweed-on-germination-of-native-herbs/F807CE66A9012F75C4F62DF3B10C40A5 https://www.scientificamerican.com/article/invasive-giant-hogweeds-solar-activated-sap-causes-blistering-skin-burns/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3589309/ https://www.ncbi.nlm.nih.gov/pubmed/25714817 https://onlinelibrary.wiley.com/doi/abs/10.1002/jsfa.2979 https://emedicine.medscape.com/article/1119566-overview Images: https://en.wikipedia.org/wiki/File:Kavkasioni.JPG https://en.wikipedia.org/wiki/File:Caucasus_topographic_map-en.svg https://commons.wikimedia.org/wiki/File:Expansion_of_hogweed_A.svg https://commons.wikimedia.org/wiki/File:B%C3%A4renklau.jpg https://commons.wikimedia.org/wiki/File:Heracleum_mantegazzianum_06_by_Line1.jpg https://commons.wikimedia.org/wiki/File:Reuzenbereklauw.JPG https://commons.wikimedia.org/wiki/File:Velky_bolsevnik.jpg https://commons.wikimedia.org/wiki/File:Heracleum_mantegazzianum_03_by_Line1.jpg https://de.wikipedia.org/wiki/Datei:Heracleum_-_B%C3%A4renklau_-_Hautreaktion.png
Views: 286299 SciShow
How Does Hair Know When to Stop Growing?
 
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The hair on your scalp can get really long, but your leg hair doesn’t sweep the floor. Why not? Hosted by: Hank Green ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Christopher Prevoe, Justin Ove, John Szymakowski, Peso255, Ruben Galvao, Fatima Iqbal, Justin Lentz, and David Campos. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources:http://www.webmd.com/skin-problems-and-treatments/hair-loss/science-hair?page=2 https://www.aad.org/dermatology-a-to-z/for-kids/about-hair/how-hair-grows http://www.loc.gov/rr/scitech/mysteries/grayhair.html http://physrev.physiology.org/content/81/1/449#ref-533 http://www.livestrong.com/article/109520-eyebrow-growth-rate/ http://stemcells.nih.gov/info/basics/pages/basics1.aspx http://physrev.physiology.org/content/81/1/449#ref-533 http://news.yale.edu/2011/09/01/yale-scientists-find-stem-cells-tell-hair-its-time-grow
Views: 838433 SciShow
Dam Fun Facts About Beavers
 
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SciShow shares fun facts about nature's greatest engineers: the beaver! Special thanks to Dr. Heidi Perryman of http://www.martinezbeavers.org/ for pointing out some of our photo examples were of nutria, also called coypu, another large aquatic rodent, that is also cute, but not a beaver. --------- Want to learn more about Animal Wonders? https://www.youtube.com/user/Anmlwndrs ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources: http://news.discovery.com/animals/zoo-animals/beaver-dam-canada-space.htm http://wildlife.utah.gov/publications/pdf/2012_beavers.pdf http://www.vetmed.wsu.edu/features/baileyMay06.asp http://www.canadiangeographic.ca/kids/animal-facts/beaver.asp http://www.landscouncil.org/beaversolution/facts_on_beavers.asp http://newswatch.nationalgeographic.com/2013/10/01/beaver-butts-emit-goo-used-for-vanilla-flavoring/ http://www3.northern.edu/natsource/MAMMALS/Beaver1.htm
Views: 562289 SciShow
Coriolis Effect: IDTIMWYTIM
 
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Does your toilet water drain differently than in the other hemisphere? Is it because of the Coriolis effect? Hank has some things to clarify about these questions, and more in this edition of I Don't Think It Means What You Think It Means. Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow -- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Sources http://www.snopes.com/science/coriolis.asp http://science.howstuffworks.com/science-vs-myth/everyday-myths/rotation-earth-toilet-baseball2.htm http://www.ems.psu.edu/~fraser/Bad/BadCoriolis.html http://oceanservice.noaa.gov/education/kits/currents/05currents1.html http://education.nationalgeographic.com/education/encyclopedia/coriolis-effect/?ar_a=1 http://en.wikipedia.org/wiki/File:Gustave_coriolis.jpg
Views: 658162 SciShow
Why Avocados Shouldn't Exist
 
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The avocado is highly regarded by many people as delicious and nutritious, but the most extraordinary thing about avocados may be their very existence. Annotation Link - Learn More About What Qualifies as a Berry: https://www.youtube.com/watch?v=LybfP... Hosted by: Michael Aranda ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Accalia Elementia, Kathy & Tim Philip, Kevin Bealer, Justin Lentz, Fatima Iqbal, Linnea Boyev, Tomasz Jonarski, Chris Peters, Philippe von Bergen, Will and Sonja Marple, and Mark Terrio-Cameron. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://www.washingtonpost.com/news/wonk/wp/2015/01/22/the-sudden-rise-of-the-avocado-americas-new-favorite-fruit/ http://www.uv.mx/personal/megalindo/files/2010/07/GalindoTovar_325_334_V21.pdf http://www.theguardian.com/lifeandstyle/2015/nov/02/avocados-ripe-ready-evil-geniuses-hooked http://nutritiondata.self.com/facts/fruits-and-fruit-juices/1843/2 http://www.avocadosource.com/CAS_Yearbooks/CAS_57_1973/CAS_1973-74_PG_070-071.pdf http://inhabitat.com/how-to-grow-an-avocado-tree-from-an-avocado-pit/ http://www.amazon.com/The-Ghosts-Evolution-Nonsensical-Anachronisms/dp/0465005527 http://fission.sas.upenn.edu/caterpillar/index.php?action=retrieve&article=Janzen%2C1982anachronisms.pdf Image Credits: https://www.flickr.com/photos/gpeters... https://www.flickr.com/photos/jeffk/3... https://www.flickr.com/photos/jeffrey... https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi...
Views: 4341893 SciShow
Why Do We Jump in Our Sleep?
 
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Learn why you may experience jumping in your sleep, and how you can prevent it! Hosted by: Michael Aranda ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Accalia Elementia, Kathy & Tim Philip, Kevin Bealer, Justin Lentz, Fatima Iqbal, Thomas J., Chris Peters, Tim Curwick, Lucy McGlasson, Andreas Heydeck, Will and Sonja Marple, Mark Terrio-Cameron, Charles George, Christopher Collins, and Patrick D. Ashmore. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- http://www.bbc.com/future/story/20120522-suffer-from-sleep-shudders https://sleep.org/articles/hypnic-jerks/ http://www.businessinsider.com/what-is-a-hypnic-jerk-2014-5 http://nymag.com/thecut/2015/09/why-do-i-jerk-awake-right-as-im-falling-asleep.html http://www.livescience.com/39225-why-people-twitch-falling-asleep.html http://www.nosleeplessnights.com/the-hypnic-jerk-jolted-awake-when-falling-asleep/ http://mentalhealthdaily.com/2015/05/19/what-are-hypnagogic-jerks-twitches-before-sleep/ http://www.howsleepworks.com/how_neurological.html
Views: 1309494 SciShow
The Strongest Bases in the World
 
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Acids are widely considered to be the scariest chemical compounds of all, but bases can be just as powerful. Most powerful of all are a special class of pH scale-defying bases called superbases! Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters—we couldn't make SciShow without them! Shout out to Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Benny, Kyle Anderson, Tim Curwick, Scott Satovsky Jr, Will and Sonja Marple, Philippe von Bergen, Bella Nash, Bryce Daifuku, Chris Peters, Patrick D. Ashmore, Charles George, Bader AlGhamdi ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: http://www.chemistryexplained.com/Ru-Sp/Soap.html http://www.classzone.com/vpg_ebooks/ml_sci_gr8/accessibility/ml_sci_gr8/page_324.pdf http://pubs.rsc.org/en/content/articlehtml/2016/sc/c6sc01726f http://chemistry.anu.edu.au/news-events/basically-record-breaking http://media.uow.edu.au/news/UOW219367.html http://pubs.rsc.org/en/Content/ArticleLanding/2016/SC/C6SC01726F#!divAbstract http://www.bioworldusa.com/ph/household-bleach# http://www.softschools.com/formulas/chemistry/sodium_hydride_uses_properties_structure_formula/248/ http://rushim.ru/books/mechanizms/superbases-for-organic-synthesis.pdf http://www.chemistryviews.org/details/ezine/8095451/The_Strongest_Superbases.html http://fileserver.net-texts.com/asset.aspx?dl=no&id=155824 http://www.ks.uiuc.edu/Training/SumSchool/materials/sources/tutorials/05-qm-tutorial/part2.html
Views: 1109641 SciShow
What Causes Growing Pains?
 
02:06
Growing Pains are real, but no one seems to know why exactly kids get them. Learn what we do know here on SciShow Quick Question! Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Fatima Iqbal, Linnea Boyev, Kathy & Tim Philip, Kevin Bealer, Justin Lentz, Chris Peters, and Philippe von Bergen. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Hosted by: Michael Aranda Sources: http://www.mayoclinic.org/diseases-conditions/growing-pains/basics/definition/con-20029782 http://www.slate.com/articles/double_x/the_kids/2013/08/growing_pains_in_kids_are_they_real_what_causes_them_and_is_there_any_treatment.html http://www.ncbi.nlm.nih.gov/pubmed/15289780 https://my.clevelandclinic.org/childrens-hospital/health-info/ages-stages/preschool/hic-Growing-Pains http://www.ncbi.nlm.nih.gov/pubmed/19039913 https://www.healthychildren.org/English/health-issues/conditions/orthopedic/pages/Growing-Pains-Are-Normal-Most-Of-The-Time.aspx http://news.psu.edu/story/141240/2007/11/05/research/probing-question-are-childrens-growing-pains-real http://www.ncbi.nlm.nih.gov/pubmed/20171654 http://www.mayoclinic.org/diseases-conditions/osgood-schlatter-disease/basics/definition/con-20021911 https://www.nlm.nih.gov/medlineplus/ency/article/001258.htm
Views: 346081 SciShow