Why These Squirrels Destroy Their Brains Every Winter

It seems like a terrible idea to destroy and rebuild your own brain, but that is exactly what some ground squirrels are doing all winter long.

Hosted by: Stefan Chin

Head to https://scishowfinds.com/ for hand selected artifacts of the universe!
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Sources:
https://www.theguardian.com/science/2015/apr/10/arctic-ground-squirrel-key-alzheimers-cure
https://www.scientificamerican.com/article/arctic-ground-squirrel-brain/
https://www.nps.gov/dena/learn/nature/arcticgroundsquirrel.htm
http://www.bbc.com/earth/story/20150218-arctic-ground-squirrels-supercool-slumber
https://www.physiology.org/doi/full/10.1152/ajpregu.2000.279.1.R255
https://www.sciencedirect.com/science/article/abs/pii/030645229290336Z
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3136081/
https://www.researchgate.net/publication/20415141_Freeze_avoidance_in_a_mammal_Body_temperatures_below_0_degree_C_in_an_Arctic_hibernator
https://kundoc.com/pdf-hibernation-induced-structural-changes-in-synaptic-contacts-between-mossy-fibres.html
http://www.jneurosci.org/content/26/41/10590.full
http://journals.sagepub.com/doi/pdf/10.1177/074873040101600309
https://www.ncbi.nlm.nih.gov/pubmed/16219369
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Images:
https://commons.wikimedia.org/wiki/File:Spermophilus_parryii_(eating_mushroom).jpg
https://commons.wikimedia.org/wiki/File:Golden-mantled_ground_squirrel_-_Bow_Lake.jpg
https://commons.wikimedia.org/wiki/File:Spermophilus_undulatus1.jpg
https://commons.wikimedia.org/wiki/File:PSM_V84_D158_Thirteen-lined_ground_squirrel_awakening_from_hibernation.jpg
https://commons.wikimedia.org/wiki/Category:Hibernation#/media/File:PSM_V84_D159_Thirteen-lined_ground_squirrel_awakening_from_hibernation.jpg
https://www.istockphoto.com/photo/small-chipmunk-gm488364313-39242694
https://www.istockphoto.com/photo/neurons-electric-pulse-gm629614340-112085713
https://en.wikipedia.org/wiki/Golden-mantled_ground_squirrel#/media/File:Golden_mantled_ground_squirrel.jpg
https://en.wikipedia.org/wiki/Golden-mantled_ground_squirrel#/media/File:Goldmantelziesel.jpg
https://en.wikipedia.org/wiki/Golden-mantled_ground_squirrel#/media/File:Callospermophilus_lateralis_Bryce_Canyon.jpg
https://www.istockphoto.com/vector/brain-anatomy-icon-gm658237426-120133117

What Are Fever Dreams?

You might have experienced those bizarre and emotionally intense dreams when you have a fever, but what are those?

Hosted by: Stefan Chin

Head to https://scishowfinds.com/ for hand selected artifacts of the universe!
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Dooblydoo thanks go to the following Patreon supporters: Jerry Perez, Lazarus G, Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, 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
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Sources:
https://journals.ub.uni-heidelberg.de/index.php/IJoDR/article/viewFile/28492/pdf
https://www.ninds.nih.gov/Disorders/Patient-Caregiver-Education/Understanding-Sleep
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3830719/
https://www.psychologytoday.com/us/blog/dream-catcher/201105/what-nightmare
https://www.ncbi.nlm.nih.gov/pubmed/15373964
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1357674/pdf/jphysiol01162-0212.pdf
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4944502/
https://doi.org/10.1016/j.bbi.2011.04.005
https://www.ncbi.nlm.nih.gov/pubmed/20077389
https://www.ncbi.nlm.nih.gov/pubmed/22461242
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0028330
https://link.springer.com/chapter/10.1007/978-3-319-13602-8_4
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1850954/

New Insights Into What Fruit Fly Sex Is Like

It’s the year 2018, and we now know that flies like to ejaculate. But how does this tie into our understanding of addiction?

Hosted by: Hank Green

Head to https://scishowfinds.com/ for hand selected artifacts of the universe!
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Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
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Dooblydoo thanks go to the following Patreon supporters: Jerry Perez, Lazarus G, Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, 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
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Sources:
https://www.eurekalert.org/emb_releases/2018-04/pp-nas041318.php
http://explodingants.com/index.php/news/102-new-ant-species-from-borneo-explodes-in-defence-of-its-colony
https://doi.org/10.3897/zookeys.751.22661
https://www.npr.org/sections/thetwo-way/2011/09/12/140406125/scientists-discover-details-of-kamikaze-ants
https://www.newscientist.com/article/mg21128295.400-kamikaze-ants-protect-the-colony/
http://blogs.discovermagazine.com/discoblog/2011/09/14/the-original-suicide-bombers-borneos-exploding-ants-commit-suicide-to-protect-colony/#.WtKs54jwZPZ
https://onlinelibrary.wiley.com/doi/full/10.1111/j.1463-6395.2011.00523.x
https://will.illinois.edu/environmentalalmanac/program/exploding-insects-top-bill-at-this-years-insect-fear-film-festival
https://livingwithinsects.wordpress.com/2011/09/20/attack-of-the-exploding-ants/
https://pdfs.semanticscholar.org/4117/af4a95dead7c8395def2c69b2be86b0ee78f.pdf?_ga=2.87822232.1245485596.1523825069-595479277.1510329839
https://libres.uncg.edu/ir/uncg/f/O_Rueppell_Review_2012.pdf

https://www.eurekalert.org/emb_releases/2018-04/cp-oss041218.php
http://www.cell.com/current-biology/fulltext/S0960-9822(18)30368-3

Image Sources:
https://www.eurekalert.org/multimedia/emb/167810.php
https://commons.wikimedia.org/wiki/File:Drosophila-melanogaster-Nauener-Stadtwald-03-VII-2007-10.jpg
https://www.eurekalert.org/emb_releases/2018-04/pp-nas041318.php

Why Babies Are (Scientifically) Amazing

Babies are amazing, tiny humans. They’re so fascinating that we’ve done a lot of videos about them, so we’ve collected a bunch of our favorites here for you to enjoy!

Hosted by: Stefan Chin

5 Amazing Facts About Babies –
https://www.youtube.com/watch?v=sQ3pIntTc_I

Why Do Babies Smell So Good? –
https://www.youtube.com/watch?v=nQulV8cjAq8

Why Do Newborn Babies Get Jaundice –
https://www.youtube.com/watch?v=Ek9CsMBIlrU

Why Can’t You Remember Being a Baby? –
https://www.youtube.com/watch?v=1nHwQKT_muc

Does Music Really Make Babies Smarter? –
https://www.youtube.com/watch?v=ajQAoFfpJUc&index=10

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Dooblydoo thanks go to the following Patreon supporters: Lazarus G, Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz
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Why Do Some Harmonies Sound Prettier Than Others?

Whether your favorite band is One Direction or Slayer, you can probably tell tense chords from relaxed ones, but what exactly gives them those qualities?

Hosted by: Stefan Chin
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Dooblydoo thanks go to the following Patreon supporters: Lazarus G, Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz
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Sources:
https://www.newscientist.com/article/dn20930-why-harmony-pleases-the-brain/
https://physics.aps.org/story/v28/st9
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.107.108103
http://www.sciencemag.org/news/2016/07/your-culture-not-your-biology-shapes-your-musical-taste
https://www.nature.com/articles/nature18635
http://www.salford.ac.uk/computing-science-engineering/research/acoustics/psychoacoustics/sound-quality-making-products-sound-better/sound-quality-testing/roughness-fluctuation-strength

How Ancient Viruses Might Have Changed Our Brains

Recent discoveries about the Arc protein have shown that its function and origin may be even more complicated than scientists originally thought.

Hosted by: Hank Green
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Dooblydoo thanks go to the following Patreon supporters:
Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطا الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz
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Sources:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2803749/
http://www.jneurosci.org/content/20/11/3993.short
http://www.cell.com/cell/fulltext/S0092-8674(17)31504-0
https://unews.utah.edu/surprise-a-virus-like-protein-is-important-for-cognition-and-memory/
https://www.sciencedirect.com/science/article/pii/S0092867417315027
http://www.iflscience.com/health-and-medicine/ancient-viruses-are-hiding-within-your-dna/
https://www.frontiersin.org/articles/10.3389/fneur.2013.00009/full
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0135076

What This Video Will Do to Your Friends’ Brains

The way your brain reacts to stimuli might tell us more about who you’re friends with, and swatting at mosquitoes might one day bring us positive results.

Hosted by: Hank Green
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Dooblydoo thanks go to the following Patreon supporters: Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطا الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz
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Sources:

http://nature.com/articles/doi:10.1038/s41467-017-02722-7
https://press.nature.com/?post_type=press_release&p=103587
http://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.1001462
http://fmri.ucsd.edu/Research/whatisfmri.html
http://www.cell.com/current-biology/fulltext/S0960-9822(17)31617-2
https://vtnews.vt.edu/articles/2018/01/012618-fralin-mosquitolearning.html
https://www.usatoday.com/story/news/nation-now/2018/01/26/squatting-mosquitoes-even-if-you-miss-trains-them-stay-away/1069101001/
http://www.who.int/features/factfiles/malaria/en/

What Happens When You Get Electrocuted?

Most of the cases we call “electrocutions” are actually electric shocks: an electric current running through a body. Whether an electric shock becomes an electrocution depends on the nature of the current involved.

We’re conducting a survey of our viewers! If you have time, please give us feedback: https://www.surveymonkey.com/r/SciShowSurvey2017

Hosted by: Hank Green
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Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
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Dooblydoo thanks go to the following Patreon supporters: Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطا الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Bella Nash, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz
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Sources: http://www.merckmanuals.com/home/injuries-and-poisoning/electrical-and-lightning-injuries/electrical-injuries
https://health.howstuffworks.com/human-body/systems/nervous-system/human-body-make-electricity.htm
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2763825/
https://safety.grainger.com/facilities/automated-external-defibrillators-aed
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Images:
http://www.thinkstockphotos.com/image/stock-illustration-set-of-construction-worker-accident/823304546/popup?sq=electric%20shock/f=CPIHVX/s=DynamicRank
http://www.thinkstockphotos.com/image/stock-illustration-set-of-doodle-skulls-with-bones/648381238
http://www.thinkstockphotos.com/image/stock-photo-neurons-electrical-pulses/652440152/popup?sq=neurons/f=CPIHVX/s=DynamicRank
http://www.thinkstockphotos.com/image/stock-photo-countryside-view-with-electricity-pylon/122475003/popup?sq=danger%20electricity/f=CPIHVX/s=DynamicRank
http://www.thinkstockphotos.com/image/stock-illustration-vector-icon-of-water-pipe-connector/576742964/popup?sq=pipes%20water/f=CIHVX/p=2/s=DynamicRank
http://www.thinkstockphotos.com/image/stock-photo-emergency-equipment/579747922

Why You See Monsters in the Mirror

Staring into the mirror in a dark room can play some nasty tricks on your brain. Like many illusions, this can tell us about how your brain processes images.

https://scishowfinds.com/

Hosted by: Hank Green
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Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
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Dooblydoo thanks go to the following Patreon supporters:
Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, Inerri, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Bella Nash, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz
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Sources:
http://lisamarievlietstramasteroffilm.com/wp-content/uploads/2015/11/the-strange-face-in-the-mirror-illusion-Giovanni-Caputo.pdf
http://kodu.ut.ee/~prokopov/toxler/research.html#p1.1
http://elvers.us/perception/troxler/
http://smc.neuralcorrelate.com/files/publications/martinez-conde_etal_nrn13.pdf
http://psycnet.apa.org/record/1981-24946-001
http://journals.sagepub.com/doi/abs/10.1068/p2911no?journalCode=peca
https://www.uni-trier.de/fileadmin/fb1/PHI/Hoffmann_-_Dokumente/Gordon_Gallup_-_Self-recognition_in_primates.pdf
http://cfs.ku.dk/staff/zahavi-publications/Con-Cog-Rochat.pdf
http://cfs.ku.dk/staff/zahavi-publications/Con-Cog-Rochat.pdf
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Images:
https://commons.wikimedia.org/wiki/File:Margaret_Thatcher_1981.jpg