SciShow

SciShow
  • 5 minutes
  • 1299 episodes
  • science
  • news
  • learn
  • teach
  • biology
  • physics
  • chemistry
  • scishow
  • hank green
  • skeleton
  • tardigrade
  • michael aranda

SciShow explores the unexpected. Seven days a week, Hank Green, Michael Aranda, and Olivia Gordon delve into the scientific subjects that defy our expectations and make us even more curious!

Schedule:
Sundays - Learn about the amazing topics we can't quite make a stand-alone show about in SciShow List Show!
Mondays - Tune in for a short Dose about our weird world.
Tuesdays - Find answers to our most asked Quick Questions.
Wednesdays - Hank or Michael dives deep into a long-form Infusion episode, or an unscripted talk show or quiz show with a guest!
Thursday - Another new dose about the wonders of the world.
Fridays - Learn the latest in science News.
Saturdays - Get your quick questions answered!

Don't forget to check out our sister-channels SciShow Space, SciShow Psych, and SciShow Kids!

What Happens If You Stop Pooping?

Constipation is no fun. Luckily, it can usually be remedied with a handful of prunes, a few cups of coffee, and some patience. However, if you don't poop for a long, long time, constipation can develop into some serious health problems. Hosted by: Hank Green 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, Nicholas Smith, 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://ddc.musc.edu/public/diseases/small-intestine/dysmotility.html https://emedicine.medscape.com/article/179937-overview#a4 https://www.aboutgimotility.org/disorders-of-the-large-intestine.html https://www.health.harvard.edu/digestive-health/constipation-and-impaction https://www.huffingtonpost.com/Greatist/how-bad-is-it-to-hold-in_b_9331542.html https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3348734/ https://www.ncbi.nlm.nih.gov/pubmed/7065551 https://www.webmd.com/digestive-disorders/exercise-curing-constipation-via-movement https://emedicine.medscape.com/article/180955-overview#a7 https://www.healthline.com/health/toxic-megacolon https://www.realclearscience.com/blog/2014/09/can_you_poop_via_your_mouth.html

1 day ago

The Neolithic Diet: New Details About What's in the Iceman's Stomach

An analysis of samples taken from the Iceman’s stomach has revealed new details about what people were eating thousands of years ago! Hosted by: Hank Green 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, Nicholas Smith, 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: https://www.eurekalert.org/emb_releases/2018-07/cp-5il070518.php http://www.cell.com/current-biology/fulltext/S0960-9822(18)30703-6 http://www.iceman.it/en/the-mummy/ http://www.pnas.org/content/99/20/12594 https://www.smithsonianmag.com/smart-news/otzi-icemans-last-meal-included-goat-bacon-180961885/ https://www.nature.com/scitable/topicpage/the-sliding-filament-theory-of-muscle-contraction-14567666 https://www.smithsonianchannel.com/videos/this-5300-year-old-corpse-was-found-by-accident/36308 Images: https://commons.wikimedia.org/wiki/File:Otzi-Quinson.jpg https://commons.wikimedia.org/wiki/File:Hintere_Schwaerze.jpg https://www.eurekalert.org/multimedia/pub/174918.php?from=399198 https://www.eurekalert.org/multimedia/pub/174917.php?from=399198 https://commons.wikimedia.org/wiki/File:Human_skeletal_muscle_tissue_1_-_TEM.jpg https://commons.wikimedia.org/wiki/File:Blausen_0257_CoronaryArtery_Plaque.png

2 days ago

Data Mining: How You're Revealing More Than You Think

Data mining recently made big news with the Cambridge Analytica scandal, but it is not just for ads and politics. It can help doctors spot fatal infections and it can even predict massacres in the Congo. Hosted by: Stefan Chin 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, Nicholas Smith, 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: https://www.aaai.org/ojs/index.php/aimagazine/article/viewArticle/1230 https://www.theregister.co.uk/2006/08/15/beer_diapers/ https://www.theatlantic.com/technology/archive/2012/04/everything-you-wanted-to-know-about-data-mining-but-were-afraid-to-ask/255388/ https://www.economist.com/node/15557465 https://blogs.scientificamerican.com/guest-blog/9-bizarre-and-surprising-insights-from-data-science/ https://qz.com/584287/data-scientists-keep-forgetting-the-one-rule-every-researcher-should-know-by-heart/ https://www.amazon.com/Predictive-Analytics-Power-Predict-Click/dp/1118356853 http://dml.cs.byu.edu/~cgc/docs/mldm_tools/Reading/DMSuccessStories.html http://content.time.com/time/magazine/article/0,9171,2058205,00.html https://www.nytimes.com/2012/02/19/magazine/shopping-habits.html?pagewanted=all&_r=0 https://www2.deloitte.com/content/dam/Deloitte/de/Documents/deloitte-analytics/Deloitte_Predictive-Maintenance_PositionPaper.pdf https://www.cs.helsinki.fi/u/htoivone/pubs/advances.pdf http://cecs.louisville.edu/datamining/PDF/0471228524.pdf https://bits.blogs.nytimes.com/2012/03/28/bizarre-insights-from-big-data https://scholar.harvard.edu/files/todd_rogers/files/political_campaigns_and_big_data_0.pdf https://insights.spotify.com/us/2015/09/30/50-strangest-genre-names/ https://www.theguardian.com/news/2005/jan/12/food.foodanddrink1 https://adexchanger.com/data-exchanges/real-world-data-science-how-ebay-and-placed-put-theory-into-practice/ https://www.theverge.com/2015/9/30/9416579/spotify-discover-weekly-online-music-curation-interview http://blog.galvanize.com/spotify-discover-weekly-data-science/ Audio Source: https://freesound.org/people/makosan/sounds/135191/ Image Source: https://commons.wikimedia.org/wiki/File:Swiss_average.png

3 days ago

How to Build a Rocket Engine in Your Kitchen (Experiment Episode)

Hank demonstrates how to build a hybrid rocket engine in your kitchen! Hosted by: Hank Green 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, Nicholas Smith, 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: https://gizmodo.com/how-to-turn-dry-pasta-into-a-rocket-engine-1514944607 https://web.stanford.edu/~cantwell/AA283_Course_Material/AA283_Course_Notes/AA283_Aircraft_and_Rocket_Propulsion_Ch_11_BJ_Cantwell.pdf http://www.qrg.northwestern.edu/projects/vss/docs/propulsion/2-what-are-the-types-of-rocket-propulsion.html https://www.grc.nasa.gov/www/k-12/airplane/lrockth.html https://www.sciencedirect.com/science/article/pii/S1270963806001404 https://phys.org/news/2015-07-student-hasten-dawn-hybrid-rocket.html https://www.sciencedirect.com/science/article/pii/S0094576516301941 https://www.acs.org/content/dam/acsorg/education/resources/k-8/science-activities/chemicalphysicalchange/chemicalreactions/heat-up-to-some-cool-reactions.pdf http://www.qrg.northwestern.edu/projects/vss/docs/propulsion/2-what-is-an-oxidizer.html https://www.scientificamerican.com/article/exploring-enzymes/ https://www.space.com/330-spaceshipone-rocket-engine-upgrade.html http://www.scielo.br/pdf/jbsmse/v32n4/v32n4a12.pdf Media: https://www.istockphoto.com/my/photo/science-fair-project-gm460811091-20917190 https://commons.wikimedia.org/wiki/File:Two_Space_Shuttle_SRBs_on_the_Crawler_transporter.jpg https://commons.wikimedia.org/wiki/File:Space_Shuttle_Columbia_launching.jpg https://commons.wikimedia.org/wiki/File:LiquidFuelRocketSchematic.jpg https://commons.wikimedia.org/wiki/File:Sojuz_TMA-9_into_flight.jpg

4 days ago

Do Animals Appreciate Music?

Animals might be music lovers, but how can we know? Is the ability to perceive and appreciate music a shared human and animal experience? Hosted by: Stefan Chin 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, Nicholas Smith, 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://psycnet.apa.org/record/1985-00463-001 http://rspb.royalsocietypublishing.org/content/285/1877/20180178 https://www.sciencedaily.com/releases/2018/05/180503101732.htm https://www.appliedanimalbehaviour.com/article/S0168-1591(15)00060-X/abstract?code=applan-site https://www.journalvetbehavior.com/article/S1558-7878(11)00184-5/fulltext https://www.sciencedirect.com/science/article/abs/pii/S0031938416306977 https://www.sciencedirect.com/science/article/pii/S0010027706001636 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4461656/ https://link.springer.com/content/pdf/10.3758%2FBF03192900.pdf https://www.ncbi.nlm.nih.gov/pmc/articles/PMC58814/ https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1467-7687.2007.00561.x https://www.sciencedirect.com/science/article/pii/S002251931100573X?via%3Dihub https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3130230/ https://www.frontiersin.org/articles/10.3389/fpsyg.2016.01158/full https://nyaspubs.onlinelibrary.wiley.com/doi/epdf/10.1111/j.1749-6632.2009.04590.x https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3690607/ http://rstb.royalsocietypublishing.org/content/370/1664/20140088 https://www.sciencedirect.com/science/article/pii/S0376635702000803 Images: http://www.thinkstockphotos.com/image/stock-photo-mri-scan-image-of-brain/614749330 http://www.thinkstockphotos.com/image/stock-photo-embryo/158399024 https://en.wikipedia.org/wiki/File:Saguinus_oedipus4.JPG https://en.wikipedia.org/wiki/File:Common_marmoset_(Callithrix_jacchus).jpg http://www.thinkstockphotos.com/image/stock-photo-puppies-locked-in-the-cage/123217563 http://www.thinkstockphotos.com/image/stock-photo-old-music-speaker-in-foreground-red-cat-and/686481590 http://www.thinkstockphotos.com/image/stock-photo-flock-of-pigeons-walking-on-ground/200229927-001

5 days ago

6 Times Scientists Radically Misunderstood the World

Science has come a long way in understanding how our universe works and that road has been full of wrong turns and dead ends. Here are 6 scientific explanations that turned out to be way off track. 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, Nicholas Smith, 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: https://www.wired.com/2014/06/fantastically-wrong-how-to-grow-a-mouse-out-of-wheat-and-sweaty-shirts/ https://www.britannica.com/biography/Louis-Pasteur/Spontaneous-generation https://www.britannica.com/science/biology#ref498783 https://ebooks.adelaide.edu.au/a/aristotle/history/book5.html https://ebooks.adelaide.edu.au/a/aristotle/generation/book3.html http://blogs.discovermagazine.com/cosmicvariance/2012/06/08/dark-matter-vs-aether/ https://www.forbes.com/sites/startswithabang/2017/04/21/the-failed-experiment-that-changed-the-world https://www.aps.org/publications/apsnews/200711/physicshistory.cfm https://www.aps.org/programs/outreach/history/historicsites/michelson-morley.cfm https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.91.020401 https://books.google.com/books?id=to8OAAAAIAAJ&printsec=frontcover#v=onepage&q&f=false p216 https://www.britannica.com/science/phlogiston https://eic.rsc.org/feature/the-logic-of-phlogiston/2000126.article https://www.acs.org/content/acs/en/education/whatischemistry/landmarks/lavoisier.html https://www.acs.org/content/dam/acsorg/education/whatischemistry/landmarks/lavoisier/antoine-laurent-lavoisier-commemorative-booklet.pdf http://www.chss.uqam.ca/Portals/0/docs/hps5002/Stud_Hist_Phil_Sci_v25n2_p159-190.pdf https://www.jstor.org/stable/3143157?seq=1#page_scan_tab_contents https://www.britannica.com/science/steady-state-theory https://www.google.com/amp/s/futurism.com/steady-state-model-of-the-universe/amp/ https://history.aip.org/exhibits/cosmology/ideas/bigbang.htm https://www.nasa.gov/topics/earth/features/earth20110816.html https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2011GL047450 https://www.hist-geo-space-sci.net/5/135/2014/hgss-5-135-2014.pdf http://www.earth-prints.org/bitstream/2122/2017/1/MANTOVANI.pdf https://www.hist-geo-space-sci.net/5/135/2014/hgss-5-135-2014.pdf https://blogs.scientificamerican.com/history-of-geology/from-the-contracting-earth-to-early-supercontinents/ https://arstechnica.com/science/2014/03/mercury-the-planet-shrinks-as-it-cools ------ Images: https://www.istockphoto.com/photo/maggot-of-fly-for-sport-fisherman-gm106458303-6041350 https://www.istockphoto.com/photo/aristotle-portray-the-philosopher-gm172411889-4331403 https://www.istockphoto.com/vector/house-fly-and-bee-illustrations-gm185111511-19447453 https://www.istockphoto.com/vector/set-of-glass-jars-for-canning-and-preserving-vector-illustration-isolated-on-gm846771750-138853499 https://www.istockphoto.com/photo/dreamy-light-refraction-pastel-soft-pale-background-abstract-defocus-rainbow-gm531186409-55315198 https://en.wikipedia.org/wiki/Celestial_spheres#/media/File:Ptolemaicsystem-small.png https://www.istockphoto.com/photo/fireplace-gm498891142-79892091 https://www.istockphoto.com/vector/burning-bonfire-with-wood-gm871355210-145516179 https://www.istockphoto.com/photo/yellow-color-burning-fire-frame-gm853959940-140333267 https://www.istockphoto.com/photo/burning-charcoal-gm865453156-143575701 https://www.nasa.gov/content/most-colorful-view-of-universe-captured-by-hubble-space-telescope https://www.nasa.gov/mission_pages/chandra/multimedia/distant-quasar-RXJ1131.html https://www.nasa.gov/image-feature/nasa-captures-epic-earth-image https://images.nasa.gov/details-PIA11245.html https://www.istockphoto.com/vector/19th-century-engraving-of-louis-pasteur-at-work-in-his-laboratory-victorian-gm872138750-243617917

6 days ago

Does Microwaving Food Destroy Its Vitamins?

Many people avoid using microwave ovens, fearing how it changes the molecular structure of your food, but studies have some evidence that may surprise you. Hosted by: Olivia Gordon 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, Nicholas Smith, 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: https://www.health.harvard.edu/staying-healthy/microwave-cooking-and-nutrition https://www.webmd.com/food-recipes/features/doees-reheating-leftovers-kill-vitamins https://www.sciencedirect.com/science/article/pii/S0308814604001517 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2722699/ https://www.quora.com/Why-doesnt-a-microwave-heat-the-air-inside-it http://www.vitamins-nutrition.org/vitamins/body-produce-vitamins.html https://www.tandfonline.com/doi/abs/10.1080/10408397609527213 https://www.healthline.com/nutrition/cooking-nutrient-content#section4 https://www.tandfonline.com/doi/abs/10.1080/10408398209527340#.UlcNh2RVBdo https://www.scientificamerican.com/article/bring-science-homes-soap-microwave/ Images: http://www.thinkstockphotos.com/image/stock-photo-steaming-broccoli-in-strainer/128956210 http://www.thinkstockphotos.com/image/stock-photo-the-microwave-oven-is-warm-burger-with-cheese/492741172

1 week ago

We Probably Can't Save the Vaquita—But We Can Learn From Them

Save the Vaquita Day is the first Saturday after the 4th of July, and it serves as a reminder that preventing extinctions means acting early. Hosted by: Hank Green 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, Nicholas Smith, D.A. Noe, سلطا 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: Vaquita: https://onlinelibrary.wiley.com/doi/full/10.1111/conl.12331 https://www.theatlantic.com/science/archive/2017/11/vaquita-porpoise-mexico-extinction/545204 https://www.vaquitacpr.org/ http://www.jstor.org/stable/4621011?seq=1#page_scan_tab_contents https://onlinelibrary.wiley.com/doi/full/10.1046/j.1523-1739.2000.98191.x https://onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2907.2006.00088.x Amur Leopard: https://academic.oup.com/jhered/article/93/5/303/2187228 https://www.companimalmed.com/article/S1938-9736(13)00081-0/abstract http://www.sandiegouniontribune.com/news/zoo/sd-me-amur-leopard-cubs-zoo-20180601-story.html https://blogs.scientificamerican.com/extinction-countdown/amur-leopard-population-triples-to-103/#jCp https://www.sciencedaily.com/releases/2007/10/071023081613.htm https://pdfs.semanticscholar.org/5aec/636a15c7c4fc91f4dac4f52cf9ed09f6c0f1.pdf Javan Rhino: http://www.iucnredlist.org/details/19495/0 https://link.springer.com/article/10.1007/s10592-006-9139-4 https://academic.oup.com/jmammal/article-abstract/76/2/335/958233 https://books.google.ca/books?hl=en&lr=&id=Wxu7Ybou0qsC&oi=fnd&pg=PA89&dq=javan+rhino&ots=OingA2uYE4&sig=fwbNUv4DtFx57EphPSqYzjQYGI4#v=onepage&q=javan%20rhino&f=false Other: http://cmsdocs.s3.amazonaws.com/summarystats/2017-3_Summary_Stats_Page_Documents/2017_3_RL_Stats_Table_3a.pdf [PDF] http://advances.sciencemag.org/content/1/5/e1400253.full http://cmsdocs.s3.amazonaws.com/summarystats/2017-3_Summary_Stats_Page_Documents/2017_3_RL_Stats_Table_1.pdf Images: https://commons.wikimedia.org/wiki/File:Thylacinus.jpg https://commons.wikimedia.org/wiki/File:Edwards%27_Dodo.jpg https://www.istockphoto.com/vector/cartoon-cute-animals-vector-set-hand-drawn-style-gm512107742-86988065 https://commons.wikimedia.org/wiki/File:Vaquita4_Olson_NOAA.jpg https://commons.wikimedia.org/wiki/File:Gulf_of_California.jpg https://www.istockphoto.com/photo/flying-fish-trapped-in-fishing-net-gm177028837-19987555 https://commons.wikimedia.org/wiki/File:Leopard-digitalART.jpg https://commons.wikimedia.org/wiki/File:Amur_Leopard_distribution.PNG https://commons.wikimedia.org/wiki/File:Amur_Leopard_Panthera_pardus_orientalis_Facing_Forward_1761px.jpg https://commons.wikimedia.org/wiki/File:Rhinoceros_sondaicus_in_London_Zoo.jpg https://commons.wikimedia.org/wiki/File:Javan_Rhino_Range.svg https://commons.wikimedia.org/wiki/File:Aren_pinna_070612_042_stgd.jpg

1 week ago

Turns Out, Spiders Use Electricity to Fly

Apparently some species of spiders can fly… and it turns out they don’t even need the wind to do it. Hosted by: Hank Green 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, Nicholas Smith, 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: https://www.cell.com/current-biology/fulltext/S0960-9822(18)30693-6 https://www.biorxiv.org/content/early/2018/03/26/206334 http://www.sciencemag.org/news/2018/04/watch-ballooning-spider-take-flight http://www.lastwordonnothing.com/2018/04/19/guest-post-ballooning-spiders/ https://arxiv.org/pdf/1309.4731v1.pdf Images: https://commons.wikimedia.org/wiki/File:Xysticus_audax_tiptoeing.ogv https://commons.wikimedia.org/wiki/File:Ballooning_spiderlings.jpg

1 week ago

Why Does Music Give Us Chills?

When a musician rips into a totally sweet solo, it can give you goosebumps and send a chill down your spine, but how does that happen? Hosted by: Stefan Chin 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, Nicholas Smith, D.A. Noe, سلطا 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: https://academic.oup.com/scan/article/11/6/884/2223400 https://www.reddit.com/r/Frisson/?count=50&after=t3_8fmok3 http://journals.sagepub.com/doi/abs/10.1177/0305735615572358 http://journals.sagepub.com/doi/pdf/10.1177/0305735610362950 https://www.frontiersin.org/articles/10.3389/fpsyg.2014.00790/full#B22 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC58814/ https://www.nature.com/articles/srep46063 https://www.media.mit.edu/galvactivator/faq.html http://www.psychlab.com/SC_explained.html http://psycnet.apa.org/record/2007-17748-012 https://theconversation.com/why-do-only-some-people-get-skin-orgasms-from-listening-to-music-59719

1 week ago

Why Billions of Passenger Pigeons Died in Under a Century

How could the most abundant bird in North America go extinct so quickly? Short answer: us. 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, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ---------- 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://science.sciencemag.org/content/358/6365/951.full https://www.npr.org/sections/thetwo-way/2017/11/16/564597936/why-did-the-passenger-pigeon-go-extinct-the-answer-might-lie-in-their-toes http://www.pnas.org/content/111/29/10636.full http://www.pbs.org/wgbh/nova/nature/plant-vs-predator.html http://sciencenetlinks.com/esheets/periodical-cicada-survival/ https://www.history.com/news/the-revival-of-the-passenger-pigeon https://link.springer.com/chapter/10.1007/978-1-4757-9921-7_1 https://www.sciencedirect.com/science/article/pii/0006320780900464 https://www.scientificamerican.com/article/3-billion-to-zero-what-happened-to-the-passenger-pigeon/ https://www.audubon.org/magazine/may-june-2014/why-passenger-pigeon-went-extinct https://www.si.edu/spotlight/passenger-pigeon https://www.nature.com/scitable/topicpage/neutral-theory-the-null-hypothesis-of-molecular-839 http://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.1002113 Image Sources: https://commons.wikimedia.org/wiki/File:Annual_report_(1909)_(14590170377).jpg https://commons.wikimedia.org/wiki/File:Flock_of_passenger_pigeons.jpg https://commons.wikimedia.org/wiki/File:Passenger_pigeon_aviary.jpg https://commons.wikimedia.org/wiki/File:Map-Ectopistes-migratorius.png https://commons.wikimedia.org/wiki/Category:Ectopistes_migratorius_(illustrations)#/media/File:Die_Vogel_(1913)_(14749379594).jpg https://commons.wikimedia.org/wiki/File:20120801Schwetzinger_Hardt11.jpg https://commons.wikimedia.org/wiki/File:Cicada2007_mlf290.jpg https://commons.wikimedia.org/wiki/File:Becharof_Wilderness_Salmon.jpg https://commons.wikimedia.org/wiki/File:Caribou_Thelon_River_1978.jpg https://commons.wikimedia.org/wiki/File:Passenger_pigeon_shoot.jpg https://commons.wikimedia.org/wiki/File:Bird_lore_(1913)_(14562557107).jpg https://commons.wikimedia.org/wiki/File:Martha_last_passenger_pigeon_1914.jpg https://commons.wikimedia.org/wiki/File:Meiosis_main_steps.svg

1 week ago

9 Poisonous Plants You Might Have Around Your House

Houseplants can be great for your mental health, but eating some of them can be far worse for your bodily health than you might think. Hosted by: Stefan Chin ---------- 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, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ---------- 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://abcnews.go.com/Technology/JustOneThing/potentially-harmful-house-plants/story?id=8589505 https://aapcc.s3.amazonaws.com/pdfs/annual_reports/12_21_2017_2016_Annua.pdf https://jamanetwork.com/journals/jama/article-abstract/666830?redirect=true http://bjo.bmj.com/content/bjophthalmol/79/1/98.full.pdf https://herbaria.plants.ox.ac.uk/bol/plants400/profiles/CD/Dieffenbachia https://onlinelibrary.wiley.com/doi/full/10.3732/ajb.0800276 http://news.bbc.co.uk/2/hi/uk_news/england/suffolk/8031344.stm https://www.ncbi.nlm.nih.gov/pubmed/21626407 http://www.jbc.org/content/261/2/505.abstract http://bioweb.uwlax.edu/bio203/s2013/cook_dani/facts.htm https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3089829/ https://monarchlab.org/biology-and-research/biology-and-natural-history/breeding-life-cycle/interactions-with-milkweed/ https://www.ncbi.nlm.nih.gov/pubmed/23674099 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4005357/ https://www.sciencedirect.com/science/article/pii/S0735109785804587?via%3Dihub https://www.poison.org/articles/2015-mar/azaleas-and-rhododendrons https://modernfarmer.com/2014/09/strange-history-hallucinogenic-mad-honey/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3404272/ http://mentalfloss.com/article/28967/how-poisonous-lily-valley http://circ.ahajournals.org/content/125/8/1053 https://www.cambridge.org/core/journals/british-journal-of-nutrition/article/biological-action-of-saponins-in-animal-systems-a-review/9FF0990F2A7AEFE5B990555A0D4A63B8 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2928447/ http://www.cbif.gc.ca/eng/species-bank/canadian-poisonous-plants-information-system/all-plants-common-name/hydrangea/?id=1370403267136 http://extoxnet.orst.edu/faqs/natural/cya.htm https://www.ncbi.nlm.nih.gov/pubmed/10669009 https://www.health.ny.gov/environmental/emergency/chemical_terrorism/cyanide_tech.htm http://www.ucmp.berkeley.edu/seedplants/cycadophyta/cycads.html https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/cycasin https://www.ncbi.nlm.nih.gov/pubmed/1620343?dopt=Abstract https://www.sciencedirect.com/science/article/pii/0027510772902060 https://www.britannica.com/science/alkylating-agent https://www.ncbi.nlm.nih.gov/pubmed/18490618 https://www.snopes.com/fact-check/poinsetting-it-out/ http://www.pbs.org/wnet/secrets/umbrella-assassin-clues-evidence/1552/ http://www.uvm.edu/safety/lab/biological-toxins https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3925711/ https://www.poison.org/articles/2015-dec/mistletoe https://www.sciencedirect.com/science/article/pii/S0005273698000248 http://jab.zsf.jcu.cz//1_3/patockastreda.pdf https://www.sciencedirect.com/science/article/pii/S0041010113000664 http://www.cbif.gc.ca/eng/species-bank/canadian-poisonous-plants-information-system/all-plants-common-name/cyclamen/?id=1370403267099 https://plants.ces.ncsu.edu/plants/all/cyclamen-persicum/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2928447/ https://www.sciencedirect.com/topics/pharmacology-toxicology-and-pharmaceutical-science/triterpenoid-saponin http://www.rachellaudan.com/2008/10/stuffed-cyclamen-and-bread-and-oil-mediterranean-island-links.html Images: https://en.wikipedia.org/wiki/File:Dieffenbachia_houseplant.jpg https://en.wikipedia.org/wiki/File:NarcissusPaperwhite01.jpg https://bit.ly/2tGnu1Y https://bit.ly/2Iucx96 https://bit.ly/2lDxyFs https://bit.ly/2lze6tp https://bit.ly/2N2lHgP https://en.wikipedia.org/wiki/File:Hydrangea-flower.jpg https://en.wikipedia.org/wiki/File:CycadKingSago.jpg https://en.wikipedia.org/wiki/File:Mistleltoe_in_Lebanon.JPG https://en.wikipedia.org/wiki/File:Cyclamen-Marth_04,_2007.JPG https://en.wikipedia.org/wiki/File:Cyclamen_abchasicum.jpg https://en.wikipedia.org/wiki/File:Poinsettia_varieties.JPG https://en.wikipedia.org/wiki/File:PoinsettiaVenation.jpg https://en.wikipedia.org/wiki/File:Euphorbia_rhizophora2_ies.jpg https://commons.wikimedia.org/wiki/File:Dieffenbachia_picta.jpg

2 weeks ago

Why Don't Whales Deafen Themselves?

Whales have a lot of the same ear parts as humans, but they are capable of making sounds that could easily shatter a human's eardrums. So why are they seemingly immune from their own sense-shattering sounds? Special thanks to Ted Cranford, Ph.D. from San Diego State University and Aude Pacini, Ph.D. from The University of Hawaii at Manoa 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, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ---------- 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:

2 weeks ago

Baby Zebrafish Eyes Work Kind of like Real-Time Photoshop

Some fish have superpowers! Zebrafish eyes can boost the color and contrast of what they see and baby whale fish are electric. Hosted by: Hank Green 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, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ---------- 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 ---------- If you'd like to see more cool research with the baby whale fish, here they are controlling some lights: https://youtu.be/K406K_VK2JY ------- Sources: https://www.cell.com/current-biology/fulltext/S0960-9822(18)30547-5 https://www.eurekalert.org/pub_releases/2018-06/uos-zn3062118.php https://www.ncbi.nlm.nih.gov/books/NBK10848/ http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0008992 https://www.cell.com/current-biology/fulltext/S0960-9822(18)30614-6 https://betterknowafish.com/2014/12/18/baby-whale-brienomyrus-brachyistius/ https://pdfs.semanticscholar.org/d266/8f0cfda796646fe27bd4d5e023d6e6065e34.pdf https://news.utexas.edu/2018/06/21/fish-s-use-of-electricity-may-shed-light-on-human-illnesses -------- Images: https://www.istockphoto.com/photo/zebrafish-zebra-barb-danio-rerio-freshwater-aquarium-fish-isolated-gm538536081-58257526 https://www.istockphoto.com/photo/close-up-of-brachydanio-rerio-in-fish-tank-gm154930578-15539203 https://www.eurekalert.org/multimedia/pub/173758.php https://www.istockphoto.com/photo/happy-baby-girl-gm464520710-59101352 https://commons.wikimedia.org/wiki/File:Grapefruit-Whole-%26-Split.jpg https://www.istockphoto.com/vector/retinal-detachment-vector-illustration-diagram-anatomical-scheme-gm912585496-251232362 https://www.istockphoto.com/photo/bright-light-shines-through-lily-pads-in-lake-gm826803008-134320753 https://www.istockphoto.com/photo/underwater-shot-of-the-coast-gm964846656-263364527 https://www.eurekalert.org/multimedia/pub/173760.php?from=397879 https://www.istockphoto.com/photo/zebrafish-aquarium-fish-gm505253725-44563946 https://www.eurekalert.org/multimedia/pub/173469.php

2 weeks ago

The Baffling Viruses That Infect... Other Viruses

Start protecting yourself on the web at https://NordVPN.com/SCISHOW or use code SCISHOW and save 77%! Scientists have discovered viruses that infect viruses... virusception, if you will. Does this mean viruses qualify as life yet? Or are they still hanging out in the misfits drawer with sporks and Pluto? Hosted by: Hank Green 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, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ---------- 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.ncbi.nlm.nih.gov/pmc/articles/PMC5127031/ https://www.nature.com/articles/nature07218.epdf https://blogs.scientificamerican.com/news-blog/viruses-theyre-alive-and-they-can-i-2008-08-08/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4801854/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2798384/ https://www.jstor.org/stable/pdf/40486000.pdf?refreqid=excelsior%3A31769491a4d015f392dbd857efd3cd56 https://virologyj.biomedcentral.com/track/pdf/10.1186/1743-422X-11-120 https://www.nature.com/scitable/topicpage/the-origins-of-viruses-14398218 http://book.bionumbers.org/how-big-are-viruses/ https://www.sciencedirect.com/science/article/pii/S2452231717300234 https://blogs.scientificamerican.com/news-blog/viruses-theyre-alive-and-they-can-i-2008-08-08/ Image sources: https://www.istockphoto.com/photo/water-tank-on-new-york-rooftop-gm684639908-125679429 https://www.istockphoto.com/photo/tupanvirus-gm936418800-256175163 https://commons.wikimedia.org/wiki/File:Mimivirus_svg.svg https://www.istockphoto.com/photo/giant-viruses-gm859575536-142038425 https://commons.wikimedia.org/wiki/File:Phage_lambda_virion.svg https://commons.wikimedia.org/wiki/File:EM_of_influenza_virus.jpg

2 weeks ago

What Do 'Natural' and 'Artificial' Flavors Really Mean?

What does it actually mean when your snack cake has "naturally flavored" on the package? Hosted by: Hank Green 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, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ---------- 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.fda.gov/ForConsumers/ConsumerUpdates/ucm521518.htm https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm?fr=101.22 https://www.npr.org/sections/thesalt/2017/11/03/560048780/is-natural-flavor-healthier-than-artificial-flavor https://www.scientificamerican.com/article/what-is-the-difference-be-2002-07-29/ https://www.fda.gov/food/ingredientspackaginglabeling/foodadditivesingredients/ucm094211.htm https://www.seriouseats.com/2014/04/what-is-the-difference-between-natural-and-artificial-flavors.html https://www.cooksillustrated.com/taste_tests/455-vanilla-extract https://www.acsh.org/sites/default/files/Natural-and-Artificial-Flavors-What-s-the-Difference.pdf http://www.cbc.ca/news/business/orange-juice-is-premium-juice-actually-more-natural-1.2902004 https://www.bonappetit.com/story/truth-about-natural-artificial-flavors https://www.popsci.com/what-are-natural-flavors https://www.mcgill.ca/oss/article/environment-food-health-news/new-meaning-natural-vanilla-flavor https://www.cdc.gov/niosh/topics/flavorings/exposure.html https://www.scientificamerican.com/article/the-problem-with-vanilla/ https://www.newyorker.com/books/page-turner/ask-an-academic-orange-juice https://abcnews.go.com/Health/california-woman-sues-pepsicos-tropicana-alleging-deceptive-advertising/story?id=15394357 https://www.femaflavor.org/ http://sitn.hms.harvard.edu/flash/2015/the-flavor-rundown-natural-vs-artificial-flavors/ https://www.ag.ndsu.edu/foodlaw/processingsector/standardofidentity https://www.popsci.com/history-flavors-us-pictorial https://www.sciencefriday.com/segments/why-doesnt-cherry-candy-taste-like-real-cherries/ https://onlinelibrary.wiley.com/doi/full/10.1111/j.1365-313X.2008.03446.x http://www.sciencemag.org/news/2017/03/greener-way-making-vanilla https://www.gao.gov/assets/310/300743.pdf http://www.effa.eu/eu-legislation/flavouring-regulation https://www.sigmaaldrich.com/technical-documents/articles/white-papers/flavors-and-fragrances/navigating-natural-flavor-regulations.html http://europa.eu/rapid/press-release_MEMO-12-723_en.htm Images: https://www.istockphoto.com/photo/apple-pie-gm814753458-131801763 https://www.istockphoto.com/photo/a-dozen-cookies-baking-in-the-oven-gm93204335-10719474 https://commons.wikimedia.org/wiki/File:Vanillin2.svg https://commons.wikimedia.org/wiki/File:Vanilla_fragrans_2.jpg https://www.istockphoto.com/photo/tube-gm687520386-126376737 https://commons.wikimedia.org/wiki/File:Vanilla_planifolia_(6998639597).jpg https://commons.wikimedia.org/wiki/File:Castoreum_01.jpg https://commons.wikimedia.org/wiki/File:American_Beaver.jpg https://bit.ly/2lA0I8m https://bit.ly/2tIeKbO https://bit.ly/2KhsV2v https://bit.ly/2KwNzeB https://bit.ly/2KoQtOV https://bit.ly/2twWqTQ

2 weeks ago

Why Do You Always Get Sick After Exams?

Why can you usually stay healthy while you’re going through a stressful situation, but then you get sick right after? Hosted by: Olivia Gordon 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, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ---------- 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.ncbi.nlm.nih.gov/pubmed/18425107 http://dujs.dartmouth.edu/2011/02/the-physiology-of-stress-cortisol-and-the-hypothalamic-pituitary-adrenal-axis/#.Wt55B5llCfA https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2629403/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3019042/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1361287/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3341916/ http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.322.7375&rep=rep1&type=pdf https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1361287/?utm_source=Global+Healing+Center&utm_campaign=87899af75f-Natural_Health_Blog_RSS_Feed&utm_medium=email&utm_term=0_7950820145-87899af75f-107880133#!po=29.3860 Images: https://commons.wikimedia.org/wiki/File:Cortisol-3D-balls.png

2 weeks ago

7 of Australia's Most Terrifying Inhabitants

If you've spent any time on the internet, you know that Australia is host to all sorts of horrible spiders and snakes. But that doesn't even begin to cover the myriad of dangerous, sometimes deadly, plants and animals you might encounter there! Hosted by: Hank Green Sydney funnel-web spider photo by Tirin 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, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ---------- 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: Magpies: https://books.google.ca/books?id=OzgLUUrAnk0C&printsec=frontcover&source=gbs_ge_summary_r&redir_esc=y#v=onepage&q&f=false https://www.nytimes.com/2016/09/14/world/what-in-the-world/australia-magpie-season.html https://www.nature.com/articles/nature25503 http://www.jstor.org/stable/3783916?seq=1#page_scan_tab_contents http://www.publish.csiro.au/MU/MU99011 http://www.publish.csiro.au/WR/WR01108 http://www.abc.net.au/science/articles/2002/07/04/2588235.htm Ticks: http://www.health.gov.au/internet/main/publishing.nsf/content/ohp-tick-bite-prevention.htm https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4313755/ https://www.mja.com.au/journal/2009/190/9/association-between-tick-bite-reactions-and-red-meat-allergy-humans https://www.mja.com.au/journal/2017/206/7/tick-borne-infectious-diseases-australia Giant centipedes: https://australianmuseum.net.au/giant-centipede#sthash.6mqLLjk4.dpuf http://www.mdpi.com/2072-6651/7/3/679 http://www.abc.net.au/local/photos/2014/11/18/4130988.htm https://onlinelibrary.wiley.com/doi/abs/10.1002/jmor.1052060307 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4104317/ Strychnine trees: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3442185/ http://journals.sagepub.com/doi/abs/10.1191/0960327102ht259cr http://jtropag.kau.in/index.php/ojs2/article/view/337 https://www.thieme-connect.com/products/ejournals/abstract/10.1055/s-2003-818014 Cone snails: http://www.jbc.org/content/286/25/22546.short https://pdfs.semanticscholar.org/ee3e/624eadd9db77817e45ac8da9f15af5ca946e.pdf [PDF] https://www.emedicinehealth.com/wilderness_cone_snail_sting/article_em.htm#cone_snail_sting_treatment http://ucgd.genetics.utah.edu/wp-content/uploads/2015/08/1-s20-S0016648015002142-web.pdf [PDF] Gympie Gympies: http://www.australiangeographic.com.au/topics/science-environment/2009/06/gympie-gympie-once-stung,-never-forgotten/ https://www.writingclearscience.com.au/wordpress/wp-content/uploads/2015/06/stingers.pdf [PDF] https://web.b.ebscohost.com/abstract?direct=true&profile=ehost&scope=site&authtype=crawler&jrnl=0004945X&AN=17291723&h=V5qs9mmzksDk72N%2fHWahkf%2bCVogW%2bXIm1Rq9Wp8cEL5ktr0QyuUOie5CuBHefWmeJBDAXyFIwVJVu1D6eABhYQ%3d%3d&crl=c&resultNs=AdminWebAuth&resultLocal=ErrCrlNotAuth&crlhashurl=login.aspx%3fdirect%3dtrue%26profile%3dehost%26scope%3dsite%26authtype%3dcrawler%26jrnl%3d0004945X%26AN%3d17291723 Irukandji jellyfish: https://blogs.scientificamerican.com/running-ponies/the-smallest-and-deadliest-kingslayer-in-the-world/ https://www.ncbi.nlm.nih.gov/pubmed/9613803 https://journals.lww.com/em-news/Fulltext/2005/04000/The_Amazing_and_Bizarre_Discovery_of_Irukandji.37.aspx http://www.abc.net.au/news/2016-01-18/researcher-warns-dangerous-jellyfish-moving-south/7095422 http://www.australiangeographic.com.au/topics/wildlife/2016/03/here-are-the-animals-really-most-likely-to-kill-you-in-australia/

3 weeks ago

Why Do Coffee Naps Recharge You So Well?

With their powers combined, coffee and naps create a greater sum than their parts. 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, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ---------- 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.ncbi.nlm.nih.gov/pubmed/15313467 http://thebrain.mcgill.ca/flash/a/a_11/a_11_m/a_11_m_cyc/a_11_m_cyc.html https://sleep.org/articles/what-does-caffeine-do-2/ https://www.vox.com/2014/8/28/6074177/coffee-naps-caffeine-science https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2769007/ https://www.tandfonline.com/doi/abs/10.3109/07853899908998788?journalCode=iann20 https://www.sciencedirect.com/science/article/pii/S1388245703002554 https://www.ncbi.nlm.nih.gov/pubmed/9401427 http://healthysleep.med.harvard.edu/healthy/matters/benefits-of-sleep/why-do-we-sleep https://onlinelibrary.wiley.com/doi/full/10.1046/j.1471-4159.2003.01687.x Media Sourced From: https://www.istockphoto.com/photo/green-fields-and-hills-of-charlcombe-valley-near-bath-uk-gm500678060-80924755 https://en.wikipedia.org/wiki/Adenosine_triphosphate#/media/File:ATPanionChemDraw.png https://commons.wikimedia.org/wiki/File:Adenosine-3D-balls.png https://en.wikipedia.org/wiki/File:Caffeine_and_adenosine.svg

3 weeks ago

We Might Be Totally Wrong About Alzheimer’s

Scientists found that the prevailing hypothesis of how the Alzheimer’s disease starts might be wrong, and some viruses could be the culprit. Hosted by: Hank Green 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, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ---------- 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.cell.com/neuron/fulltext/S0896-6273(18)30421-5 https://www.eurekalert.org/emb_releases/2018-06/nioa-nsf061418.php https://www.eurekalert.org/emb_releases/2018-06/asu-nss061418.php https://www.eurekalert.org/emb_releases/2018-06/cp-mef061418.php https://www.eurekalert.org/emb_releases/2018-06/tmsh-uhl061118.php https://aeon.co/essays/how-microbial-infections-might-cause-alzheimers-disease http://stm.sciencemag.org/content/8/340/340ra72 https://www.ncbi.nlm.nih.gov/pubmed/15172741 https://www.scientificamerican.com/article/controversial-new-push-to-tie-microbes-to-alzheimer-s-disease/ https://content.iospress.com/articles/journal-of-alzheimers-disease/jad160152 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4750402/ https://www.the-scientist.com/?articles.view/articleNo/50208/title/Do-Microbes-Trigger-Alzheimer-s-Disease-/ https://www.statnews.com/2016/10/13/alzheimers-drug-eli-lilly/ https://www.cdc.gov/nchs/fastats/leading-causes-of-death.htm https://www.nature.com/articles/nrd3505 Image Souces: https://commons.wikimedia.org/wiki/File:Amyloid-plaque_formation-big.jpg https://commons.wikimedia.org/wiki/Category:Roseola#/media/File:OSC_Microbio_21_03_roseola5th.jpg

3 weeks ago