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!
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!

Why Do We Smile?

Why Do We Smile?

7 күн мурун

The Viruses That Shaped Humanity
Why Skin Creams Give You Rashes
When Two Species Mix

When Two Species Mix

17 күн мурун

These Fish Eat Scales

These Fish Eat Scales

20 күн мурун

All This Noise Is KILLING Me!
How Antarctica Froze Over
The Curious Case of Colic
The Oldest Shipwreck in the World
The Male Biological Clock

The Male Biological Clock

2 ай мурун

Poor, Misunderstood Poison Ivy
I Can't Believe It's Not Wood
Why Do Humans Like to Get High?
How Big Can Black Holes Grow?
Firehawks: Nature's Arsonists
  1. Jank Aryjen

    Jank AryjenКүн мурун

    i think pitch lakes are also mentioned in bible, old testament

  2. Aaron Bingaman

    Aaron BingamanКүн мурун

    Is it possible that what we call viruses. Are fragments of genetic codes from formerly active life forms. Where when the life-form dies the cell or cells in it. Activate genes that build a protein coat around the genetic fragments. That then attempt to integrate into a living life form once consumed by said life.

  3. Jay Smok

    Jay SmokКүн мурун

    I was hoping they would be hermit crabs. I have two hermit crabs.

  4. Cheetah Playz

    Cheetah PlayzКүн мурун


  5. Sausage N Bellenz

    Sausage N BellenzКүн мурун

    I dont care, iff I feel I'll, cold shower makes me feel better, just in general too, I take shower before bed it helps me sleep, I have cold shower sometimes to wake me up too.. Just remember to start off warm to hot and then finish cold, also that you are not stepping back into a cold environment for too long..

  6. fireblaze

    fireblazeКүн мурун

    So thats were bee swam simulator got royale jelly from

  7. peace and love

    peace and loveКүн мурун

    Well, why then thousands of parents successfully sued the vaccine makers and vaccines makers have paid millions of dollars. You should talk about the CDC whistle blower that testified and presented documents were CDC has known the fact that there is a link between neurological injuries like autism and vaccines. Also about the billions of dollars spend my big pharma lobbyist so now vaccines makers can not be sued though those same majers have being sued and found responsible for severe injuries to death caused to children by vaccine. Very simple parent before a vaccine is given to your shield ask the pedutrician ti provide to the inserts (ingredient list descriptions) of the vaccine so you can review it. Like any chemical-man- made-drug you want to know the ingredients and possible side effects. Just that. See what the doctor or nurse tells you. In the remote case you get it go over it with a neurologist and a genetist.

  8. Krishna Bahadur

    Krishna BahadurКүн мурун

    A shame we sold half it to china.

  9. johnson stepford

    johnson stepfordКүн мурун

    the name is odd because it affects your arms too sometimes. but I suppose there are a lot of strange medical names

  10. Raymond K Petry

    Raymond K PetryКүн мурун

    *_"...murder becomes our soil (in outerspace)..." - Dave (Professors' Spring Fling 1999)..._*

  11. Iquey

    IqueyКүн мурун

    If I stepped in that I would scream.

  12. Mr. Cat

    Mr. CatКүн мурун

    Did he say the fish’s name wrong ? I thought it was KOALA-canth

  13. Eda Soileau

    Eda SoileauКүн мурун

    thank you now i can fake food poisoning to get out of school

  14. bleachno9

    bleachno9Күн мурун

    People keep saying Spongebob but my old ass just remembers Doug

  15. Renato Granito

    Renato GranitoКүн мурун

    What about births in the full moon or different phases of the moon? Does it affect some how the baby? Or the difficulty of the birth somehow?

  16. R

    RКүн мурун

    False! Plants are of nature, the pharmaceutical organization can not make money from things that are nature! Pharmaceutical attempt to mimic the natural healing in nature grown plants by synthesizing and through the use of chemicals which counter act the human bodies natural healing function. There for causing secondary or even more serious illnesses ,even death!!!!

  17. Crusader Knight

    Crusader KnightКүн мурун

    I’m a ginger from Eire Up the RA🇮🇪

  18. Mārcis Bērziņš

    Mārcis BērziņšКүн мурун

    Could the edits be more "natural"?

  19. Anthony

    AnthonyКүн мурун

    Interesting video, I totally forgot that tar lakes were naturally occurring, but it makes total sense.

  20. Herobrine Animations

    Herobrine AnimationsКүн мурун

    I'm watching this video because if i run i seriously get a side stitch after like 25 meter running or it even happends with walking i don't know what to do about it and i already have that for 3 years, and i want it to stop..

  21. Mikkel Lorentzen

    Mikkel LorentzenКүн мурун

    Where my blue eyed cousins at???

  22. jammingalways

    jammingalwaysКүн мурун

    Bullcrap fast talking NONSENSE. PLEASE explain this owl sneezes... And THEN explain a cat sneezes... Denying the HEAVENLY FATHER AND, HIS creations is simply a TRAVESTY (of the SOUL). Thumbs DOWN.

  23. Lori

    LoriКүн мурун

    Why doesn't the down's syndrome inbred build some more ugly high rises.

  24. Ken

    KenКүн мурун

    that's why i'm always having my car key in my pocket when it's winter, even i'm at home!!!

  25. johnnytheprick

    johnnytheprickКүн мурун

    dood, you talk to slow...........

  26. Sunberriyu

    SunberriyuКүн мурун

    if I'm not mistaken, programming a quantum computer should be way different than a classical computer; so that transition at the end was kind of a lie lol

  27. Kermit explains the joke

    Kermit explains the jokeКүн мурун

    Trolls are just people who cant argue their point and need to say complete bullahit because of it

  28. Exton Jonas

    Exton JonasКүн мурун

    Stop punishing me i can't help where i grew up. Put the temperatures in Fahrenheit too

  29. The Rεal Hal Jordan

    The Rεal Hal JordanКүн мурун

    0:03 recent research? pretty sure sugar has been known to be bad for our teeth and overall heath for centuries

  30. Milton Poo

    Milton PooКүн мурун

    Great video.

  31. Colly

    CollyКүн мурун

    the thumbnail title sounds like it could be a radiohead song

  32. Jed-Henry Witkowski

    Jed-Henry WitkowskiКүн мурун

    I will stop to observe her in all her Sun backlit splendor.

  33. Ujuani Abelsen

    Ujuani AbelsenКүн мурун

    Is the host from Chicago?

  34. Grant Sturgeon

    Grant SturgeonКүн мурун

    what does it break it down to?

  35. the Unrepentant

    the UnrepentantКүн мурун

    Bitcoin is created by mining and obtained by trading. Nakomoto, the developer of the open source software controlled the issue of bitcoin upon its inception, which only later became decentralized. Crypto currency is a peer-to-peer network. This is the way I understand it works: A transaction is recorded on a public ledger, which we will assume is identified as 047 for simplicity, which is updated each time to display the latest entry. Anyone can view the sum, but not the name of the person that made the payment. Jane Doe anonymously sends $20 to her friend by buying a bitcoin from her (that her friend acquired for fifty cents). The so-called bitcoin is nothing more than an entry to a reusable ledger that the public may view that is updated to record the most recent payment. Thus, ledger 047 is updated from $0.50 to $20. It is nothing more than a ledger entry that serves as a receipt to which only Jane Doe the current holder has access protected by a key (password). Access to ledger 047 may be transferred (sold) to another party. The purchaser that now has access to ledger 047 cannot redeem this entry for cash. If the ledger served as a repository for funds there is no reason to pay any more for it than its current balance. That is all it is, a ledger entry. But ledger 047 is misleadingly referred to as a coin. Members of the public viewing ledger 047 notice that the amount $20 has been recorded to it. Jane Doe lists her access to this entry on an exchange offering to sell it for $30. John Smith sends her this sum. Ledger 047 is updated to reflect the latest payment that is $30. John Smith has obtained access to ledger 047 that he in turn may list on an exchange if he so desires. What he is selling is access to ledger 047 that he presently owns. Ledger 047 has no more value than a ledger recording postal money orders that have previously been issued. The record is not the money order itself, cannot be redeemed for cash and no one would be foolish enough to pay money for this privilege. But because ledger 047 is referred to erroneously as currency it is treated as such. Members of the public believe that a digital coin has just sold for $30. John Smith lists on an exchange access to ledger 047 for $90 and William Jones snaps it up. Ledger 047 is updated with the sum $90. William Jones may sell his access to ledger 047 and if he does it will be updated and display the new sum. Am I overlooking something? If ledger 047 is a repository of funds that may be redeemed for cash then there is no reason to pay any more for it than what it holds in its current balance. Any premium over that is what the purchaser is willing to pay for anonymity that does not justify a sum of more than a few dollars. Members of the public are duped into believing that the updated ledger entry represents the intrinsic value of a digital coin, but what this so-called coin comprises, is a ledger entry that in and of itself has zero value and the only recourse that the holder has is to sell his right to access if he wishes cash.

  36. Evi1M4chine

    Evi1M4chineКүн мурун

    C. elegans. Literally the gayest animal on the planet! :D

  37. Niall Stewart

    Niall StewartКүн мурун

    9:15 ThAt‘s A lOT oF dAmAgE!

  38. EozTheNew

    EozTheNew2 күн мурун

    You went with the buff flies for the title. I would've gone for the living robots for the title, it's the more eye-catching headline in this episode (at least I found it more surprising).

  39. Evi1M4chine

    Evi1M4chine2 күн мурун

    @Hank, @Journey To The Microcosmos: PLEASE make an episode about life from there!

  40. Nicholai Corbie

    Nicholai Corbie2 күн мурун

    SciShow finally featured Trinidad!

  41. Bo Reed

    Bo Reed2 күн мурун

    Anyone ever look at how the earth could just kill us one of a thousand ways and think we have _0_hope no defences were so worried how asteroid but it's even funnier to think all these scary ways to die but you will probably die cus some Dumass kills you and a 50 percent chance you weren't the intended victim it's more of likelyhood than a super nova asteroid or solar flair creepy part you know I'm rite maby not the math and odds but before you step outside visions of meat wagons role thru your head if you die odds are a human put you there.😵😵🥳

  42. Existenceisillusion

    Existenceisillusion2 күн мурун

    Here's another misconception about evolution. The misconception that it applies only to biology. It doesn't, it applies to any system that can change in a stochastic way.

  43. SUNGEAR59

    SUNGEAR592 күн мурун

    The Chicxulub meteorite impact went 20kms (12 miles) into the crust

  44. Joey Sabat élève

    Joey Sabat élève2 күн мурун

    Id sream about somethig massive that i couldint explane its like syper heavy and scary

  45. Anand Acharya

    Anand Acharya2 күн мурун

    After the last video of SciShow, my question is 'were there Nematodes in the tar pits?'

  46. mercster

    mercster2 күн мурун

    Celsius is crap.

  47. D Lucifer

    D Lucifer2 күн мурун

    I’ve been around smelly people before and I lose all control over my good behavior! I try so hard to be nice, but my stomach always has the upper hand in the situation, and has complete control over my body! 🤢🤮🚽

  48. Aaron Harrington

    Aaron Harrington2 күн мурун

    Poor frogs

  49. Celio Guarate

    Celio Guarate2 күн мурун

    Lake Guanoco in Venezuela is bigger xD check your sources

  50. Evi1M4chine

    Evi1M4chine2 күн мурун

    Lovely! Sounds like my city in the summer!

  51. Stephanie Joseph

    Stephanie Joseph2 күн мурун

    I just got shocked twice and decided to look it up lol. It's winter and both times it was because I touched a metal doorknob.

  52. Bryn Homeniuk

    Bryn Homeniuk2 күн мурун

    Ive seen nematodes in zoology class.

  53. Luciferkrist

    Luciferkrist2 күн мурун

    So I am officially weird then. I can never trust people that smile for no reason, especially in photos. Selfish people are usually the most friendly to strangers.

  54. Kid Last

    Kid Last2 күн мурун

    Seriously this chick looks like Woody Allen with a sex change

  55. Kid Last

    Kid Last2 күн мурун

    Couldn't get a hotter chic to do this vid? Looking at this broad is like looking at the sun

  56. Gillboy75

    Gillboy752 күн мурун

    what if evolution is just natural evolving from things that happen, like you hunt the babys they go extinct you hunt the largest only that allows the smaller creatures to live and pass their size on, so if you hunted every snake over 5 feet they will eventually be unable to reach that length because they couldnt survive over 5 feet or humans would change the evolution or if every 6 ft tall person stopped reproducing humans would get shorter because the tall genmes arnt in the gene pool as only short people would be reproducing

  57. Anthony Beaudry

    Anthony Beaudry2 күн мурун

    Futurama anyone? "waowaaowaow"

  58. ratsalad

    ratsalad2 күн мурун

    don't underestimate sokka, kids

  59. Marcella melody Thompson

    Marcella melody Thompson2 күн мурун

    Why your fells like it opening and opening and opening and its fells like nothing is inside any help plss

  60. tungsten carbide projectile

    tungsten carbide projectile2 күн мурун

    I read the article before this show came out... yay

  61. Samuel Feynman Tribute page

    Samuel Feynman Tribute page2 күн мурун

    Trinidad. Mr Biswas had a house there.

  62. Silver King

    Silver King2 күн мурун

    Just had sex for 3 days in a row and I feel horrible. 🤒

  63. anthony etuk

    anthony etuk2 күн мурун

    we are not animals. I am tired of all of these "know it alls" who use the same faith in their "blindness" as i do in my Christianity. #WEARENOTANIMALS. If anyone wants to use a rebuttal and worship the validity of science, I will then perform a "mic drop of a statement" and simply ask... What about science is empirical? When you can answer that, come back to me.

  64. SciShow

    SciShow2 күн мурун

    Thanks, Stephen, for pointing out the image for the Death Cap at 6:55 is mislabeled, and not actually a Death Cap. For an accurate image, click here:

  65. Hiroko Morioka

    Hiroko Morioka2 күн мурун

    Why, then, Switzerland banned GMO foods unanimously by referendum???

  66. Isaac Ramphal

    Isaac Ramphal2 күн мурун

    Can you try to get a sample of this stuff and use it in Journey to the Microcosmos? It may be hard to see anything using your microscopes, but perhaps you might be able to dilute the sample with a heavy enough hydrocarbon that is still yellowish to colourless to aid visibility without killing the microbes. This would be a pretty cool project if it worked.

  67. klutterkicker

    klutterkicker2 күн мурун

    "4 out of every 5 animals are nematodes" glances over at five of my coworkers...

  68. RandomIcko

    RandomIcko2 күн мурун

    I thought it would be full of Grimer.

  69. Hiroko Morioka

    Hiroko Morioka2 күн мурун

    We need more depth researches and results of GMO foods. What is the link with cancer, ADHD, Autism and depression? Reports from various aspects needed.

  70. Carlo Alicer

    Carlo Alicer2 күн мурун

    Its been more than 4 months now here in the southern philippines of continuous earthquakes, the most strongest is 6.9 to 7.0 magnitudes and now a volcano has just erupted in the northern part. Makes you think the big one is close to happening.

  71. Ossified Prophet

    Ossified Prophet2 күн мурун

    Nuke pitch lakes, how the hell they disagree with the dominant life form on this planet on what is and isn't a good vacation spot? 😤

  72. Spital Helles

    Spital Helles2 күн мурун

    Well I'm 25, drink lots of coffee and people say I look 19, soo

  73. Dihydrogen Monoxide

    Dihydrogen Monoxide2 күн мурун

    He looks like the younger version of smash mouth’s singer.

  74. Glenroy Crawford

    Glenroy Crawford2 күн мурун

    Hey, my Trini people we're getting some representation here, thanks to Hank and the Sci Show team for all the videos they put out every day, love the channel and I hope you talk more about Trinidad in the future. We still have some active mud volcanoes, temples built in the sea, Caroni Swamp Wildlife Reserves etc. that may provide interesting viewing in the future

  75. Based Yoshi

    Based Yoshi2 күн мурун

    This is like drinking water out of the ala wai canal in Waikiki, Honolulu, Hawaii.

  76. Based Yoshi

    Based Yoshi2 күн мурун

    Ain’t that something, Detroit has cleaner water than flint. I used to live in Detroit. My grandparents lived in flint (during this water crisis).

  77. Bogdan

    Bogdan2 күн мурун

    1:02 Just like my girlfriend

  78. bmoreravenfan

    bmoreravenfan2 күн мурун

    I've been here! My parents are from Trinidad

  79. Levi Carpenter

    Levi Carpenter2 күн мурун

    I wonder if there are any species alive today that we still haven't found any/many ancestors for in the fossil record... 🤔 Hmm.

  80. SriVidya Bukke

    SriVidya Bukke2 күн мурун

    Can there be negative energy or negative mass??? Is it possible?

  81. Sally Griffin

    Sally Griffin2 күн мурун

    They also get eaten by the fungus that connects trees in a forested area. COOL!!!

  82. sirdeadlock

    sirdeadlock2 күн мурун

    Sounds like primordial soup.

  83. Lon Johnson

    Lon Johnson2 күн мурун

    This didn't really answer the question; it showed that some primates showed teeth for non-aggressive reasons. But WHY?

  84. Brandon Steele

    Brandon Steele2 күн мурун

    Could number four of been caused by a nuclear explosion in the past?

  85. Axel Shark's Science

    Axel Shark's Science2 күн мурун

    Science is not what you wish it to be. They don't accept or support outside solutions. They deny you as long as they possibly can in order to make money. The world hasn't changed in terms of supporting inventors. But I don't care I don't need their help. I'll do it myself. I'm the real Tony Stark afteral.

  86. Richard Larson

    Richard Larson2 күн мурун

    TONIGHT! Madison Square Garden!! Pure Peril Fever!!!

  87. michael åhlfors

    michael åhlfors2 күн мурун

    they have the need. the need to kneed!

  88. Tyana Haskins

    Tyana Haskins2 күн мурун

    Can we please have a woman of color?

  89. meatball dude

    meatball dude2 күн мурун

    i hate people who make viruses just to brick computers

  90. 77 Syph

    77 Syph2 күн мурун

    I have the worst one

  91. meatball dude

    meatball dude2 күн мурун

    What do i get from decrypting something?

  92. Andrew Browner

    Andrew Browner2 күн мурун

    theres no proper volume level for this guys voice... got the youtube player at 1% and my computer at 0% as soon as i move the computer to 1% his voice is screeching my ear drums out turn the Gain upto 1million

  93. Iago Silva

    Iago Silva2 күн мурун

    1:42 Hey, baby - quality over quantity any day but Thursday

  94. Sakib Chowdhury Zheelam

    Sakib Chowdhury Zheelam2 күн мурун

    sounds like someone systemically terraformed the earth so that we humans can live in it.

  95. Christopher Jay

    Christopher Jay2 күн мурун

    lol I hate science sometimes :p I have disliked carrots most of my life.. they always had a bitterness to them I couldn't get past. I now buy organic carrots and ENJOY them in my regular diet(only scrubbed, not peeled). This was not a change in my taste buds but the lack of something used in conventional growing (whether it be pesticides or garbage synthetic fertilizer). I've bought conventionally grown carrots here and there (organic not available and I was craving some) and I always have to peel the hell out of them just so they don't taste like crap.. so much for those nutrients close to/in the peel.. There is no science in that personal experience so it's scientifically meaningless, yes? And therein lies an issue I take with science and what it "proves" Also, the things companies are legally allowed to do (practices and additives "generally recognized as safe") for aesthetic and "safety" reasons are disgusting.. like using carbon monoxide gas(poison) to keep red meat as red as possible so that DUMBASS, ignorant customers see it and think "oh, its so fresh". Or something like PPO gas (a toxic, carcinogenic chemical used in things like car seat foam and building insulation) being allowed as a pasteurization process for almonds. Science says "generally recognized as safe" lol who paid for that study?? I will buy as many organic certified products as I can possibly afford and not just for the sake of the planet, its to avoid being poisoned by garbage companies don't want to be public knowledge.. oh and not being able to switch the world to 100% organic practices is a matter of overpopulation- not a point against the sustainability of organic farming. The fact that people are popping out 3, 4+ kids and the government- not only- has no restriction but gives assistance to big families is disgusting; What a waste of resources and my tax money.. Given the population crisis, giving financial assistance for more than two children is complete NONSENSE to me and really it should only be for one but I've been called cold-hearted for BASIC LOGICAL conclusions on multiple occasions so I guess I'M the crazy one? LOL

  96. Vietnam Flashback

    Vietnam Flashback2 күн мурун

    This grows very fast on my 4the finger , only took 2 days

  97. Santiago Gallego Bettin

    Santiago Gallego Bettin2 күн мурун

    No te entendí ni merga no se ingles

  98. ramona davis

    ramona davis2 күн мурун

    this got my brain thinking, besides studying the enzymes they make, but how the body uses them to do it, cause i do not think just the enzymes by them selves might not work on oil, but how they digest it in their guts and disperse it. the enzymes help, but their is probably more to it than just enzymes. but this is my brain thinking on this as he talked. do not know if on right thought track or just me.

  99. Brian M Fieldwick

    Brian M Fieldwick2 күн мурун

    With that definition then we are parasites of the earth

  100. jack l

    jack l2 күн мурун

    giant lake of oil in Thailand. US government invade Thailand for oil