The Deadliest Being on Planet Earth - The Bacteriophage

  • Published on May 13, 2018
  • A war has been raging for billions of years, killing trillions every single day, while we don’t even notice. This war involves the single deadliest being on our planet: The Bacteriophage.
    Created with scientific advice and editing by James Gurney.
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    The Deadliest Being on Planet Earth - The Bacteriophage

Comments • 30 918

  • Kurzgesagt – In a Nutshell
    Kurzgesagt – In a Nutshell  8 months ago +7399

    You like our art and want to put it on your wall? Look no further:

    • Bobra Bob
      Bobra Bob 2 days ago

      Interesting, this was just on quirks and quarks on CBC radio.

      GAMINGOV 3 days ago


    • Night King
      Night King 5 days ago +1

      The problem is that a phage is highly selective which means it will kill some bacteria while not other bacteria and they could kiĺl good ones as well and leave the bad bacteria. So I think more search is needed

    • Thomas Wilson
      Thomas Wilson 7 days ago

      Kurzgesagt - In a Nutshell hi

    • Destroyer 10000
      Destroyer 10000 12 days ago

      Kurzgesagt - In a Nutshell 2

  • Normal_StikBot
    Normal_StikBot Day ago

    4:28 i love that part.

  • Eating food is wow

    aww i have little pet bacteria killers on me

  • Jack Krieger
    Jack Krieger Day ago

    The problem with medicines and new cures is the monopoly companies that have sunk their teeth deep into politics and the health market .
    I believe that health system should be seen as a market but should be controlled half by private sector amd half by the government.

  • John Oats
    John Oats Day ago

    It's 3 am and I'm scared

  • RandomRules
    RandomRules Day ago

    got it, so phages are nazis

  • Joshua Cisneros
    Joshua Cisneros Day ago

    Their heads look like the triforce.

  • Harrison Young
    Harrison Young Day ago +1

    4:43 is that a worms reference 😅

  • Berriestorm
    Berriestorm Day ago

    But if The bactheriofage can evolve, that doesn't mean that The bacteriofaghes can evolve and kil humans too?


    They sound like they will evolve into anything to kill bacteria... But what if one day they said we need a bigger fish to fry...

  • Poisonedskull 103

    Super bacteria: (gets into the human) TIME TO DIE
    Human: (almost dying) ohhhhh sheeeeeet
    Other human: (injects phage into him)
    Human: WHAT!!!! WHAT ARE YOU-
    Phage: (kills bacteria)
    Human: ...
    Phage: (looking at human cells) HEWO
    Human cell: sup (fist bumps phage)
    Human: well then.....

  • Mr. Shiny Pikachu

    I looked at the thumbnail and thought I saw a Gem Injector from Steven Universe. Weird.

  • Alexander Arnold

    These are like microphages and microbiome in the gut! Yuckers🌰!

  • Linda Nguyen
    Linda Nguyen 2 days ago

    Who are you

  • K00lAid Plays
    K00lAid Plays 2 days ago

    World war 3

  • renato mu
    renato mu 2 days ago


  • The Unknown Critter
    The Unknown Critter 2 days ago

    Fuck fungus. I'm allergic to penicillin and every other cillin. I'm screwed...

  • Uniformatom
    Uniformatom 2 days ago +1

    What if it evolves and finds a way to destroy human cells?

  • The Cringe World
    The Cringe World 2 days ago +1

    i don't know ..this bacteriophage makes me feel exposed and violated's like a really good villan

  • thoko skene
    thoko skene 2 days ago

    I'm paranoid now 😕

  • Anthony Morford
    Anthony Morford 2 days ago

    We should probably run computer simulations before committing to this 100%

  • Kridam The shape shifter

    Anti phages

  • TNTender 666
    TNTender 666 2 days ago +2

    Is it just me or does the phage look like the kindergarten drills from steven universe

  • M Z
    M Z 3 days ago +1

    The virus and bacteria can't be a friend right?

  • faiz Yoda
    faiz Yoda 3 days ago +1

    Don’t press read more

    Now your are cursed for all of 2019,
    Please press the like button to undo the curse

  • Agente RED
    Agente RED 3 days ago

    No pos que buen

  • the little veteran
    the little veteran 3 days ago

    What if the phages evolve to be able to hurt us?

  • Oir Basilio
    Oir Basilio 3 days ago

    do you mean the phage is not alive do you mean its dead?

  • Jason Yang
    Jason Yang 3 days ago

    這中文字幕翻譯得太棒了 感謝作者

  • MuffledCornet
    MuffledCornet 3 days ago

    If I roll it, will I actually be able to use them in DnD

  • Yevgen 4000
    Yevgen 4000 3 days ago


  • Bacteria
    Bacteria 3 days ago

    *where's the dislike button?*

  • fluffy boy
    fluffy boy 3 days ago

    but couldn't the bacteriophobes evolve to harm us?

  • TheBloxer
    TheBloxer 3 days ago

    *He is Jesus in desguise.*

  • TheBloxer
    TheBloxer 3 days ago

    Then they realize we are using them and they get revenge and kill us

  • Kitten2Cat
    Kitten2Cat 3 days ago

    Where do you get your sources?

  • bobasaur squared
    bobasaur squared 3 days ago

    They actually aren't viruses
    -Alice Agnew

  • Mister X
    Mister X 3 days ago

    That whould be like anti vaxxers all over again

  • MishaMae82 ApparentApostate

    I was very interested in this until I saw the Bill and Melinda Gates tid bit at the end...kinda hard to get behind when Bill blatenly says in a Ted Talk we must decrease the population by 90%. Maybe these phages will work faster than that of antibiotics and vaccines from years past.

  • Dawid Szamreta
    Dawid Szamreta 3 days ago

    So the deadliest virus is our protector and age by age it evolves and our organism is much stronger, I think in future human will recieve one more chromosome making him post-human

  • Gaming Madness
    Gaming Madness 3 days ago

    Who is the man who got the phages? For a school project

  • Random Youtuber
    Random Youtuber 3 days ago


  • FuturisticSp
    FuturisticSp 3 days ago

    If we use 2 much phages wont they evolve to maybe attack our cells which would be the most common or smth

  • Dmirtru Gotfrid
    Dmirtru Gotfrid 3 days ago +1

    скиньте ссылку на русскую версию

  • Jeyhun Anaroghlu
    Jeyhun Anaroghlu 3 days ago

    Does this mean aids can cure the cold?

  • Manjot singh
    Manjot singh 3 days ago

    If these two species partnership with each other then together they can end everyone welcome to the hell

  • -Crystal_ Clear-
    -Crystal_ Clear- 3 days ago

    Holy crap it's a gem drill....

  • 1un4cy
    1un4cy 3 days ago

    So we basically just flip flop between phages and antibiotics every couple of decades
    or would phages be the new permanent antibiotic, and medicine would just be plan Z

  • Ze Yang Lim
    Ze Yang Lim 3 days ago

    Bacteria says shit

  • Mei Newman
    Mei Newman 4 days ago

    y'all I have a cold while watching this and am soo scared!!

  • alfa alfa
    alfa alfa 4 days ago

    The enemy is pharmaceutical

  • Mono
    Mono 4 days ago

    But what if

    s evolve into killing us?

    • Mono
      Mono 3 days ago

      +AL Hmmm... interesting, Bacteriophages, indeed is like us humans, I think if it were to evolve, I believe it will take a long time for it to change. I guess we won't be able to see it alter in our generation...

    • AL
      AL 3 days ago

      If it did, why didn't it do it now? They're specialized. They don't affect eukaryotic cells.

  • otaku g
    otaku g 4 days ago

    Please phage kill the acne causing bacteria

  • mozart
    mozart 4 days ago

    the battle of survival amazes me

  • The Irish Polar Bear

    Damn that’s deep there’s a war in our fucking bodies going as I type this comment holy shit

  • The Rat
    The Rat 4 days ago

    This is honestly horrific

    But cool

  • Pocket Knife
    Pocket Knife 4 days ago

    so they're basically chestbursters?

  • Ash Greninja
    Ash Greninja 4 days ago

    If the microphage is good at killing, can it kill Ebola?

  • B Taylor
    B Taylor 4 days ago

    I hope the phages don't evolved to use human cells for reproduction.

  • Ahsan Hussain
    Ahsan Hussain 4 days ago

    More like the bacteriofag

  • suprtroopr1028
    suprtroopr1028 4 days ago

    The second deadliest organism on the planet utilizing the deadliest to our advantage. Doesn't that effectively make us the deadliest?

  • Soláyn Croes Biggest Hater

    It looks like it’s from Steven universe in the kindergarten the giant robots that made them looks exactly like that

  • Crappy Videos
    Crappy Videos 4 days ago +1

    a phage kills bacterias by shoving its dick inside a bacteria

  • patrick star gaming
    patrick star gaming 4 days ago

    Yhe sure but you said that the phages are evolving too sothey evolve and evolve until they might kil us

    • AL
      AL 3 days ago

      1. They're specialized. 2. Phages do not affect eukaryotic cells.

  • Don Lucchese
    Don Lucchese 4 days ago

    Thanks to the Eastern block isolation. They created that concept in medicine. The Soviets did not used antibiotics but instead bacteriophages. I guess the West had spent all it's ideas and found the solution on the East.

  • Lucas Bailey-Thomas
    Lucas Bailey-Thomas 4 days ago

    2:07 ... A castle falls from within its walls!

  • R0B0BRO
    R0B0BRO 4 days ago

    But couldn't phages evolve to attack human cells?

    • AL
      AL 3 days ago


  • MAES ‘
    MAES ‘ 4 days ago

    If I can give this video more than one like I would, thank you !

  • lyhthegreat
    lyhthegreat 4 days ago

    i kinda feel bad for the bacterias now...

  • Lord Icebear
    Lord Icebear 4 days ago

    when phages are gonna be completly normal cure: anti phagers come in

  • Rebeca Cann
    Rebeca Cann 4 days ago

    The sound tho 5:12

  • Magical Fox
    Magical Fox 4 days ago +1

    Play this in 1.25 speed. Don’t sound different but it gets the episode done quicker xD

  • Devon Lucier
    Devon Lucier 4 days ago

    Until a new type of Bacteria develops, and it eats the entire planet.

  • Devon Lucier
    Devon Lucier 4 days ago

    5:16 Goodness. Never thought I'd hear the Wilhelm scream in a educational video.

  • Captain Maria Li
    Captain Maria Li 4 days ago

    This channel always reminds me how stupid humans can be

  • Immortal Bacon
    Immortal Bacon 4 days ago

    Why isn't this a thing yet? It's 2019 for Pete's sake!

  • Random Youtuber
    Random Youtuber 4 days ago

    Killer bacteria,defender bacteriophage!

  • PeterTCA Gaming
    PeterTCA Gaming 5 days ago

    It's like a never ending WW2 on a microscopic level, Very epic

  • Nibba
    Nibba 5 days ago

    Pharma companies are fraud and kill people for money.
    Depopulation Agenda

  • Clara Green
    Clara Green 5 days ago

    Imagine if phages attacked human cells?What would we do?I think we would go extinct!!

    • AL
      AL 3 days ago

      Good news, won't happen.

  • MayIexposeyou
    MayIexposeyou 5 days ago

    I love phages now

  • MayIexposeyou
    MayIexposeyou 5 days ago

    Fuck i hate life i wish i die to go to heaven

  • Precious Aquino
    Precious Aquino 5 days ago

    Phages can evolve like an group of sientis taking a sample and create a weapon that how phagea work

  • Arman Yusaf
    Arman Yusaf 5 days ago

    Played a videogame like this on ps3

    Forgot what it was called
    Anyone know?

  • T3RRENCE [Terrain Shadow]

    Seems Familiar. [Steven Universe Theme Plays]

  • J LUV
    J LUV 5 days ago

    So when the bacterial phage injects it’s dna inside a cell it’s like getting a girl pregnant?🤔

  • Kiwi Borb
    Kiwi Borb 5 days ago +1

    Sometimes the worst things are the best things

  • Christian Moore
    Christian Moore 5 days ago

    Worms reference 4:53

  • lala jecko
    lala jecko 5 days ago

    You're scaring me

  • LeipeLampenGames
    LeipeLampenGames 5 days ago

    Superbugs are created in america due to its stupid people

  • Brandon Massaro
    Brandon Massaro 5 days ago

    2:10 so phages are it

  • Karl D. Marx
    Karl D. Marx 6 days ago

    Very cool ... isn't the singular of bacteria bacterium (1'37")? … Many might also argue that viruses are not beings.

  • wyatt davis
    wyatt davis 6 days ago

    In Eastern Europe they have been using phage treatment for years. Poland has an institute devoted almost exclusively to phage treatment. I have read somewhere that they have vials of different types of phages gathered from various sources including sewage (!)

  • cj gamer
    cj gamer 6 days ago


  • Bobby Kids
    Bobby Kids 6 days ago

    inject a mix of phages and antibiotics for every single thing.
    Minor cough? Phages and antibiotics
    Cold? Phages and antibiotics
    Cancer? You get the idea

  • Loes Brijobhokun
    Loes Brijobhokun 6 days ago

    I really want phages to get rid of cancer. And is it possible?

  • Kierien Davis
    Kierien Davis 6 days ago

    :they are one of the most dangerous viruses in the world
    :they are living in us right now


    :but they can kill evil bacteria


  • Stoyan Mollov
    Stoyan Mollov 6 days ago

    Phages look cute.

  • MasterMLG63
    MasterMLG63 6 days ago

    So a virus is like a immune system
    kill one type
    learnt already
    ded bacteria

  • luckyfox 3657
    luckyfox 3657 6 days ago

    Or you just give a phage a mini infinity gauntlet