SciShow
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Comments: 100

  • John Marchione
    John Marchione 2 hours ago

    *_the science show_*

  • Twitchy
    Twitchy 6 days ago

    what a lad

  • Jason Beer
    Jason Beer 7 days ago

    If i were able to drill a hole completely through the earth, and due to my amazing awesomeness it stays a hole through the mantle, core, etc. what happens if the other end of my hole is at the bottom of an ocean?
    does the pressure and velocity of the water cause it to shoot through?
    will it reach a state of equilibrium?

  • Labeeb Ahmad-Sanni
    Labeeb Ahmad-Sanni 8 days ago

    BTW this channel was brought to you by youtube

  • Corey Doyle
    Corey Doyle 12 days ago

    Did anyone else just watch an episode on photographic chemistry, and find out it's been removed?

  • José Luis Fernández Somarriba

    Why did you upload a video only to take it down?

  • vbplayar
    vbplayar 12 days ago

    Can I add suggested topics here? If so ... can you explain what in coffee (if anything) makes it an appetite suppressant? I drink it mainly to help curb my appetite (which it seems to do) but I'm curious what in it causes that effect and in what other drinks it may exist. Thanks for your great work on this show ... love it.

  • Conscious Opposition

    Why did you delete the new video xD The Sharknado one

  • Moe Friend
    Moe Friend 14 days ago

    guys I have a question from where di iron come from or how did it form. I know some how it came from outer space, but I am not sure can you please make a video about it

  • Krishna Allam
    Krishna Allam 16 days ago

    Does hypoxic training works if it works what's the most effective way and how much change it may create

  • Doctor Zeuss
    Doctor Zeuss 19 days ago

    Do a video about AI creating their pwn language?

  • Shattuck Springer
    Shattuck Springer 27 days ago

    Happy Shark Week Scishow here is a video for you all.

  • Danielle Standford

    HI, I am writing a paper, on the over view of the LBGT community. in the attempt to give people a better understanding of Why people are the way they are. I would love to hear your take on the differences of Sex, Gender Identity, Gender Expression, Sexuality, and Individual's Attractions. I am willing to share my paper with you. I just need to know if you want it?

  • avada banada
    avada banada Month ago

    I am hearing a lot about “stem-cell therapy” where "real" doctors in other countries are sucking fat out of your gut and then injecting it into your knees. This treatment, supposedly, causes your body to regrow new knees. Everyone I hear from says this treatment works. I am dubious. Can you do a vodcast on this?

  • Pope Dope XVI
    Pope Dope XVI Month ago

    Ok, BACK TO SCIENCE!!!!!!!!
    I've noticed the from time to time everything goes black (like the world "blinked"). Its happened day and night, inside and out. Plus my friends have seen it at the exact same time. What is this?

  • kalkin powale
    kalkin powale Month ago

    What will happen if you add lots of water on venus? will it be habitable?

  • colin stephenson
    colin stephenson Month ago

    You're scientists...of sorts. The way human speech works on the brain has beautifully evolved over a very long time. It has to include certain kinds of intonation, pauses and beyond a certain natural speed of delivery, it becomes increasingly difficult for the brain to process. Your presentation is done at such a rate with all pauses edited out, that it becomes tiresome and stressful to keep up concentration. This is a style that seems to be unique to YouTube material. There is also a kind of weird glottal thing going on. It's like you've all practised a received speech technique, sheep like, without really considering whether it's effective or not. I think it evolved out of the time limitations on YouTube videos that I believe is no longer in place. Try talking normally and don't edit out the gaps and pauses. Give your subscribers brains a chance to actually take in the material you're presenting. If you're not relaxed, your listeners won't be either.

  • johny quach
    johny quach Month ago

    why do you need to do a compression on chest for the purpose of CPR? what are the risk of breaking a bone while doing the compression, and how dangerous is it?

  • Capt777harris
    Capt777harris Month ago

    SciShow, could you do a show on gravity? Specifically there's a theory that the "graviton" is the particle responsible for gravity, and that it moves at the speed of light. But if that's the case, then how do black holes work? I mean, how do gravitons even escape their own gravity to grab other bits and pieces of mass and light to pull into the black hole if nothing can escape a black hole? I am very confused, and am wondering if you can help confused people like me with a cool show on the topic.

  • Joe P
    Joe P Month ago

    Can you do one about leprosy and why armadillos carry the disease and why does it affect Polynesians more than any races?

  • Joe Wittkop
    Joe Wittkop Month ago

    you should do a vid on why you shouldn't pick your nose (or why we should start).

  • Mihail Skvernoslov

    I still find this channel quite above the average and with good presentation skills, not to mention the interesting topics.

  • Stewart O
    Stewart O Month ago

    Since approximately 2/3 of the population have HSV!, and it's so easily transmitted, why isn't there a cure or vaccine for herpes yet?

    Even though this is not a deadly disease it is isolating which can lead to depressing which is at time life threatening...

  • Autumn Klein
    Autumn Klein Month ago

    Also, can you guys make a video on why I don't poop during vacation? I just came back from a week trip to Three Lakes Wisconsin, and I didn't poop the WHOLE time I was there, but right when I get back I leave 5 turds in the toilet... WHATS THAT ALL ABOUT!?

  • Lord Hawkeye
    Lord Hawkeye Month ago

    You can add me to the growing list of unsubscribers. Enabling a verbal abuser to blow smoke at your own stated rules is not only unacceptable, it calls the credibility of your show into question.

    Integrity is important, as is not taking your audience for granted.

  • Ruzzell
    Ruzzell Month ago

    why do people pee in their bed?

  • DanieleGiorgino
    DanieleGiorgino Month ago

    The owner of this channel supports a bully and a scam artist. Unsubbed.

  • Tetrapharmakos
    Tetrapharmakos Month ago

    How dare Hank invoke the word "discourse" in defense of someone's act of shutting down discourse; someone whose discursive methods are well known to be in a constant state of proceeding in bad faith.

  • nefarioustoast
    nefarioustoast Month ago

    im staying subscribed for science but hank ya gotta tell bully anita to GET OUT

  • Rainbow dashbro
    Rainbow dashbro Month ago

    I will be unsubscribing as a protest in Mr. Greens actions. Sorry it has to be that way.

  • Dennis Isenberg
    Dennis Isenberg Month ago

    I'm out but I wish you best luck with your marxist friends (spoiler alert: it won't work in the long run).

  • Tezla Alchemia
    Tezla Alchemia Month ago

    Unsubbing... YOU KNOW WHY!

  • Rip0k
    Rip0k Month ago

    I Hate hypocrites. UNSUB. F. U.

  • boon steson
    boon steson Month ago

    Hank, I thought you were about science and facts? What happened at Vidcon doesn't show a person that is interested in facts in the slightest, only a person that would rather be PC or assume that the woman is correct just because they are female and will jump to conclusions. You actions have seriously put your channels credibility at stake, how can I believe a person talking about science and facts that doesn't even follow what he preaches or follow his own rules? This is truly upsetting, I can no longer recommend your channels to people in good conscience :(

  • littlegirlinplad
    littlegirlinplad Month ago

    So back to Science yeah! I saw an article on Science Alert this morning that the Yellow Stone volcano is having more aggressive swarms. I am sure the crazies are already saying we are gonna die. The article was explaining how this is not unusual. You guys do an awesome job thank you.

  • A Nano Augmented Super Soldier From The Year2052 To Become god But Only After Fusing With Helios

    I'm unsubed no do to the poor handling of vidcon and I will unsub from the following as a lot of us have felt that you need a boycott. vlogbrothers, DFTBA Records, project for awesome, crash course, and eco geek

  • zargondm
    zargondm Month ago

    So point out the flaws in someone thesis (or blatant lies) is licence to intact violence against some one at your conference. And you endorsed it, and spit out untrue statements with no backing to support it. Unsubscribed your bias is garbage. Anita put it best in her attack, "You are a garbage human" for supporting attacks on some one because they disagree with you intellectual. Unsubscribed, and anyone with integrity would too. #Garbagehumans.

  • tal
    tal Month ago

    I'm sorry Hank. You handled this incorrectly. I love your channel. Scishow was one of the first channels I've ever subscribed to way back when, but I've unsub'd. Man up man and correct your, I'm sure, honest misguided mistake. Until then I will not watch scishow or sci anything.

  • Maximum Black
    Maximum Black Month ago

    hi, my name is trash person lol. unsub from you manginas

  • My Ingroup Idol Did Nothing Wrong

    Hi Hank, I just dropped in to let you know that I find the official vidcon response to The Sark's harassment and insults towards the majority of the audience of a panel that she was part of disgusting. Not only did you blame the victim, you also erased all the victimized women from the story. Your family name is now a disgrace to humanity.

  • Archtechnician
    Archtechnician Month ago

    Im unsubbing you vids are interesting but a channel that protects bullies and even apologies to them even tho they are the aggressor (on a anti bulling panel no less) is despicable. I am sorry to the other creators of this channels videos but the way Mr Green has handled cut and dry abuse of power, bulling of paying attendees and even panel members is sickening.

    If this was reversed I am 100% sure you would still side with the wrong person. FYI being called names is harassment going to attend a talk and sitting there is not. Going after another panelist and swearing at them because you disagree with something they said is down right verbal assault.

  • capq57
    capq57 Month ago

    Just call me garbage too, I can not support hypocrisy.

  • corpsefenn
    corpsefenn Month ago

    I'm unsubbing over how you guys think it's okay for pannalist to attack people. How DAre you take the side of someone who ATTACKS BOOGIE Like that!

  • TarmokLP
    TarmokLP Month ago

    Really ashamed about how you reacted to the entire Vidcon situation and can't follow you anymore.

  • ShaunBonJovi
    ShaunBonJovi Month ago

    PAYCE!

  • santi traun
    santi traun Month ago

    Unsubscribed since the Green Brothers and Vidcon support harassment and verbal abuse.

  • gonecoastal4
    gonecoastal4 Month ago

    UNSUB. You know why, John. #Garbagehumans.

  • Thomas Korn
    Thomas Korn Month ago

    While this channel is awesome... the Green brothers are disgusting. Giving Anita Sarkeesean a free reign of terror is sickening

  • Doug Reed
    Doug Reed Month ago

    Hey Hank, just wanted to let you know that I have to unsubscribe from all your channels, including this one. This is because you placed an openly known sociopath and cyberbully above the law at VidCon 2017 and excused her harassment and bullying of other panelists and paying attendees, while expelling one of her victims from the event. Such victim-blaming and double-standards are, to me at least, wholly deplorable. I simply cannot support a channel run by a person that acts in such a way.

    Also, I read you response to (part of) the situation. Based on the complete lack of factual evidence, objectivity and critical thought displayed therein, the decent thing to do would be to shut-down this, and any other science/academic channels you may run.

    Best wishes in the future, and best of luck becoming a rational person that is worthy of respect.

  • Sericen De'Whami
    Sericen De'Whami Month ago

    after seeing the out come of vid con, i will no longer sub to your channels. i have enjoyied your content over the past few years and generally like the hosts and subjects you cover, i cannot watch or condone your actions regarding the breaking of your own policies with the whole anita thing. she clearly broke your own rules and you apologized to her? i would like to say i never heard of her before this happened and am not a fan of the other person involved, i just cant stand the letting one continue with the convention and removing the other.

  • eric richards
    eric richards Month ago

    Enchroma glasses and how they work

  • Soulios Atrika
    Soulios Atrika Month ago

    #BoycottVidCon

  • coal james
    coal james Month ago

    I'm unsubbing, I subscribed to this channel because it seemed unbiased and scientific in it's methodology.

    I was shocked to hear that Mr. Green and his brother's extremely popular VidCon would not condemn and follow their own rules when it come's to harassment and all because the victim holds political views the brothers and the aggressor do not agree with.

    Disgusting behavior, when the whole world is watching and the video evidence is clear and uncut. If I cannot trust Mr. Green to tell the truth and follow the rules he's has set for his event... then why should I trust science videos he put's out.

    • xXevilsmilesXx
      xXevilsmilesXx Month ago

      there will come a day. When they say, "Where did it all go down hill?" VIDcon 2017 will be the pitiless reply. You had the opportunity to DO something. SAY something. And you compromised your integrity, the only thing anyone really has, for nothing. I expected this from a morality bankrupted christian like John, but not a scientist like Hank. The shame of this will follow you to the grave boys.


    • Onyx Drake
      Onyx Drake Month ago

      In full and total agreement. The Green Bros have disgraced themselves.


    • jemielnic
      jemielnic Month ago

      thumb up. It's no use to be interested in science, when the whole 'progress' start to depend on what somebody has NOT in its crotch... Unimaginative de-generation is on rise. r/K selection confirmed.


    • Loyalist
      Loyalist Month ago

      +

      Genuine shameful behavior.


  • Onyx Drake
    Onyx Drake Month ago

    Well it looks like I am going to have to unsub from this channel. Mr. Green you seem to have no moral compass. When someone breaks you own
    code of conduct for VidCon and you side with the transgressor over her victim you seem to have lost your mind. I hope other people follow my
    lead and you understand how fair play actually works. To borrow a line from your apparent best buddy you are a Garbage Human Being. I hope you
    well in the future but it will sadly not be with me as a subscriber. tootles

  • Daniel Bridgman
    Daniel Bridgman Month ago

    question, Causality vs the speed of light. causality propagates at the speed of light, but the speed of light isnt constant, so could light be slowed through a medium in which it moves slower so as to have the causality arrive before the light?

    example gravity propagates at the speed of light, if the sun disappears it would take 8 minutes before the earth started floating off into deep space, could the light be slowed (through water, air or anything that isnt the vacuum of space) so that the effect arrives before the light disappears?

  • J. Moonstorm
    J. Moonstorm Month ago

    Hey SciShow, I have a question for you: Could we see genetically engineered trees in the future that produce stronger wood than steel, titanium, and the strongest types of stone? Would technology like this be feasible or are there inherent problems with the core concept? Could we splice the DNA sequence in spiders they use to make the super strong proteins that gives spider silk it's strength with the DNA sequences trees use to make the proteins and fibers that make up it's wood structure?

  • MrWardonis
    MrWardonis Month ago

    Could quantum entanglement be uesd for superluminal communication?

  • NorwayGladiator
    NorwayGladiator Month ago

    Question: Why do computers make colors with Green, Blue and Red instead of Yellow, Blue and Red?

  • John New
    John New Month ago

    Colloidal silver- Hey SciShow, I thought it would be neat if you did a piggy back video on the Bacteria Killing Metal... A video about Colloidal silver and how best to use it and what it does! Thanks!

  • Sam's luvin
    Sam's luvin Month ago

    Hey what's up with allowing anita scamkeesian to be a panelist and literally be on stage insulting other people completely violating the "rules" you have at VIDCON? How is it that you are allowing that kind of harassment to happen while attempting to have "panels" to talk about literally that exact same concept and ways to fight it. WTF mate?

  • Capt777harris
    Capt777harris 2 months ago

    SciShow, could you do a video on why animals with larger brains don't develop our kind of intelligence? Thanks.

  • Danielle Case
    Danielle Case 2 months ago

    nonylphenol ethoxylates, what are they? And what damage do they do? They are currently being removed from the milk industry. It was used in cleaning products for cows udders but now they are being required to switch to NPE free stuff.

  • Osama Abdallah
    Osama Abdallah 2 months ago

    ?may I ask what happens to dead body in space
    and for how long it will stays ?

  • Freeman
    Freeman 2 months ago

    Why have older sci show videos vanished from my "Subscriprions" tab?
    PS: I have the bell thing turned on.

  • Ray Camplin
    Ray Camplin 2 months ago

    Is drinking distilled water bad for you?

  • Cory Matsumoto
    Cory Matsumoto 2 months ago

    video idea: why do body parts become so sensitive when they "fall asleep"

  • Capt777harris
    Capt777harris 2 months ago

    Scishow, could you do a show on charcoal and how it differs from regular coal? And how is it that we burn stuff to make stuff that'll burn? I don't get that.

  • Krish Nair
    Krish Nair 2 months ago

    Can you please add a video with this topic: How do Chromosomes and genes from a father go into a baby being made in a female?

  • Thomas-L L
    Thomas-L L 2 months ago

    Video suggestion: RIFE Machines, Do They Work?

  • Thomas-L L
    Thomas-L L 2 months ago

    What if you made a playlist with all of the SciShow videos on it, so someone could make sure to watch them all by going through it like a Crash Course subject.

  • K Anderson
    K Anderson 2 months ago

    I would love to see a video on rare or newly discovered medical conditions/disorders/syndromes. I have Hemicrania Continua and wanted to not only learn more about my own, but others as well. Also, I love your channel.

  • Christian Cecere
    Christian Cecere 2 months ago

    QQ: why do i vocalize when i vomit?

  • Jasim Al-Rufaye
    Jasim Al-Rufaye 2 months ago

    I have a strange question, as we know the creation of the fetus need sperm cells come from a man into the egg cell inside the woman however can you create artificial sperm cells so that we can modify it by adding superman DNA or waterbear DNA or whatever you need to add just like a mini-god?

  • gianna kopulos
    gianna kopulos 2 months ago

    Hi i'm Leonardo, I live in Italy and I'm 19 years old. I'm doing a sort of "senior thesis paper" here in italy about Theremin. I surfed the net and I found your video about it. The animation about the inductor-capacitor circuit is really interesting. Can you please tell me where did you find it? Thank you for your attention to this matter. Leonardo

  • Michael Lewis
    Michael Lewis 2 months ago

    Please do a video on magnesium sulfate (epsom salt). I hear it helps remove toxins through your skin and that it's good for migraines, which sounds possible but kinda farfetched. Dispel the myths!

  • Dino Saurus
    Dino Saurus 2 months ago

    Hi Scishow love your videos, my question is how does Bugspray kill bugs? What does it do to them to make them die from the spray? I'm curious because I needed to use some today. Thanks!

  • Miguel Teixeira
    Miguel Teixeira 2 months ago

    What are the differences between the 5 brain waves(Alpha, Beta, Theta, Gama, Delta)?

  • David Gutowski
    David Gutowski 2 months ago

    I remember an episode on correlation; it detailed a study where subjects were asked a huge number of wide ranging questions and the researchers specifically went looking for nonsensical correlations just to prove the old adage that "correlation does not mean causation." One of the random correlations was that people who like banana and peanut butter sandwiches are more likely to fall out of bed.
    I can't find the episode, can anyone help me?

  • ckmox
    ckmox 2 months ago

    can you do a educational video about cost of preventing climate change vs the cost of climate change impact

    we have alternative sources of energy already that is getting as cheap as fossil fuels as coal so it will not cost a lot of money to simply reduce/remove fossil fuel use

    meanwhile the impact of climate change are more powerful natural disasters like storms, heavy rain, sea level rising, droughts that can cause food shortages, worldwide migrant crisis, diseases/epidemic from pollution of burning more fossil fuels, social conflicts/wars, etc and when you total the cost of them all it will be much higher

    i hope you can expand on those things i said

  • Scott Pugh
    Scott Pugh 2 months ago

    Idea for a possible series of videos: laboratory tests and how they are used to diagnose diseases.

  • maxime therrien
    maxime therrien 2 months ago

    Hello Scishow. I'm very proud to say that I watch many if not all of your videos! I was wondering if you took suggestions for future episodes; I think that an episode about thunder and plant growth could be an interesting idea, since I don't think many people know about that. Anyhow, thank you for all the good stuff that you put out on YouTube!

  • Josh Dyer
    Josh Dyer 2 months ago

    I know this may not be good enough for an episode, but maybe you could explain to me what is going on?

    There is this post on Facebook that when you scroll it on your news feed, the words pop out from the background, but when stationary, they are much harder to read. It is a checkerboard pattern with words written in a light gray between the black squares. Why does motion cause the words to pop out like that becoming visible. I know it isn't changing, but scrolling causes my perception of it to change. If you do this as a vid response, maybe you could include other similar illusions. Thanks. If you need an example, I could provide a link, but I've found many popular YouTube channels auto delete comments with links, and I really want to know what is going on here.

  • Manuel Falcon
    Manuel Falcon 2 months ago

    Hey guys! How about a video on the implications of the US' withdrawal from the Paris Climate Agreement? You rock btw

  • Victoria Tewell
    Victoria Tewell 2 months ago

    *Ideas for new show segments* ...but I would appreciate a reply from anyone who has an answer in case the producers don't think these questions would make for good content. (ps. I'm a big fan of the show, and I think Hank Green is great!!)

    1. What causes the slime when you're cooking meat--mostly ground beef and salmon--and is there a way to stop the process?

    2. Why do people feel chilled when we get a fever? Does it happen to other mammals?

  • Vincent Proxy
    Vincent Proxy 2 months ago

    My girlfriend is very very very skeptic about the health benefits of garlic. Specifically whether or not it boost immune system. She says there haven't been any studies confirming it (and I wasn't able to find anything she deems credible) and we cannot agree on the matter. We both found that there have been studies showing some benefits of garlic in either preventing or battling cancer, but that isn't the same as "boosting/improving the immune system". Could you look into this question and make a video about it?

  • Matheus M. M.
    Matheus M. M. 2 months ago

    A good question for a video: Why tires with more grip are wider if the friction equation is μ times N ?
    N = normal force
    μ = coefficient of friction for the two surfaces
    I'm a material engineer and I always need to explain this for friends...

    • Matheus M. M.
      Matheus M. M. 2 months ago

      To be honest with you VIctoria I know the answer and yours is incorrect/inaccurate. I proposed it because this question is very common when we are talking about friction at high school here in Brazil. I'm going to teach tribology ( the study of friction) for undergraduated students and some of them will answer like you... probabily... I guess.... Anyway, thank you for trying to help !


    • Victoria Tewell
      Victoria Tewell 2 months ago

      If you have a narrow tire, friction is only applied to a small surface area. In comparison, the wider the tire, the more surface for the application of friction.


    • Victoria Tewell
      Victoria Tewell 2 months ago

      I haven't studied physics since college 18 years ago, but I wanted to give you a (probably wrong) idea in case you didn't get any other responses (since no one ever responded to my question.)

      In order to calculate the force, you should need the amount of area over which that force is being applied. If you're looking for where the size of the tire comes into play, you might want to take a look at what goes into calculating N.


  • bruce lee
    bruce lee 2 months ago

    Yo SciShow: How do Fillings work?

  • Bhupendra Singh
    Bhupendra Singh 2 months ago

    why Hardgainers had hard time to gain muscles , make video on it

  • QueenSelphie
    QueenSelphie 2 months ago

    I would like to know the reason behind craving a food that you don't like. An for me would be soft shell crab sandwiches. When ever I smell them cooking I want one, and I will get one. As I am eatting though I remember why don't like them.

  • Mudkip909
    Mudkip909 2 months ago

    what makes mint "Minty"? is it a chemical?

  • Ammar Ahamed
    Ammar Ahamed 2 months ago

    how can cockroaches stay without their heads for days ?
    this is a question that my brother Abdullah anted to ask

  • Lift Pizzas
    Lift Pizzas 2 months ago

    I'd love to see a study that determines whether people can actually comprehend/retain anything on videos that are edited such that there are no pauses between sentences/phrases. I find it super annoying and really hate this trend in video editing.

  • stoner4010
    stoner4010 2 months ago

    Unsubbed due to nosering girl. There is no way to tell if she's the host or not.

  • Ethan Carlos
    Ethan Carlos 2 months ago

    can you use a virus as a DNA injector or something?

  • Mendeli Allouche
    Mendeli Allouche 2 months ago

    QUESTION: CAN U TEACH ANIMAL TO TALK?

    • Victoria Tewell
      Victoria Tewell 2 months ago

      Communicate, maybe. Talk, no. They don't have our vocal cords, so they can't make the same noises.


  • Mendeli Allouche
    Mendeli Allouche 2 months ago

    QUESTION: WHY MANY MEN GO BALD?

  • Sergeant Valentine
    Sergeant Valentine 2 months ago

    Hey, I have a question. What would happen Jupiter suddenly became the fourth planet? and was at the same distance as mars.

    • Thomas-L L
      Thomas-L L 2 months ago

      The fourth planet? It is a planet and we have way more tham 4 already in the Solar System.


  • MAX
    MAX 2 months ago

    if bats produce ultrasonic sounds then why dont we become deaf when they are near me??

    • Lift Pizzas
      Lift Pizzas 2 months ago

      Ultrasonic is just a pitch higher than your ears can detect. Why would that make you deaf?


  • Hailey Hazelwood
    Hailey Hazelwood 3 months ago

    Can you do a video on virtual particles and their properties?

  • Gerson2021
    Gerson2021 3 months ago

    Can you do a qq on applied kinesiology? Does it actually work?

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