What Was the Ancestor of Everything? (feat. PBS Space Time and It’s Okay To Be Smart)


Comentarios • 1 062

  • Ashley Alexander
    Ashley Alexander Hace 4 horas

    This video gives a great example of how much we have to learn from microbes! I'd love to see a video just dedicated to the amazing diversity and complexity of microbes!

  • Eddie  Inscore
    Eddie Inscore Hace 3 días

    Can there be more then one loku

  • angelo tejada
    angelo tejada Hace 5 días

    Have you made a video on the origin of spoken language yet? That really boggles me to the wee hours of the morning! Thanks.

  • MinecraftBoy4237
    MinecraftBoy4237 Hace 6 días

    Just think... if you don’t have babies your ending a line of ancestry that goes back literally billions of years. Get off Fortnite

  • Ryan May
    Ryan May Hace 9 días

    Order requires a force to exist

  • Jon B-C
    Jon B-C Hace 10 días

    4:13 Hank Green and Joe Hanson in the same 10 seconds, I am ELATED

  • Gameplayevi sa Lukom
    Gameplayevi sa Lukom Hace 13 días

    Now im so proud that im called Luka

  • Pikachu and pichu with friends

    Every time you get an F- on your test
    Your making Luca be disappointed

  • Sylkis89
    Sylkis89 Hace 17 días

    What if the universal bit of genome we try to identify doesn't come from LUCA but at some very early stages of live on earth let's say there were hundreds of species of simple organisms and a virus implemented that bit of genome into each and every single one of them, or at least into each and every one that survived and lived to tell its genomic tale?

  • Suly M
    Suly M Hace 18 días

    what if we have more than one common anscestor? whats the possibility of two lucas developing at the same time?

  • Dávid Abonyi
    Dávid Abonyi Hace 19 días

    Sooo could we reconstruct LUCA by cutting away all but the universal genes of an organism and then inserting that into an empty cell?

  • Pup314
    Pup314 Hace 24 días

    Hi, my name is Luca, I lived in the Archean era.

  • 熊耳マナ
    熊耳マナ Hace 27 días

    I'm extremely curious about the very first life. Before LUCA

  • CerberaOdollam
    CerberaOdollam Hace un mes

    hold up, so if something that is most distant from evrything else goes extinct, the LUCA title is given to something more recent, right?

  • Chuck Just Chuck
    Chuck Just Chuck Hace un mes


  • Frank Demarco
    Frank Demarco Hace un mes

    wear did the sugar come from?

  • Nguyen Pham
    Nguyen Pham Hace un mes

    bur then Thanos killed half of us...

  • Connor Coulson
    Connor Coulson Hace un mes

    So no matter what, it's probably some boring featureless little germ. Got it.

  • Joseph T.
    Joseph T. Hace un mes

    Seems we evolved from different types of bacteria just like we evolved into different species afterwards depending on environment factors.

  • Oran Lichtman
    Oran Lichtman Hace un mes

    You should talk about the Oxygen crisis, I don’t really know much about it
    ...Never mind I just watched that video how about when plants got leaves

  • Fermin Naelga
    Fermin Naelga Hace un mes

    Progenotes sounds like a virus...

  • Humble Evidence Accepter
    Humble Evidence Accepter Hace un mes +1

    If I were to imagine the perfect ESclips Science channel, it would be this. Informative, but doesn't insult my intelligence. Comprehensive, but in about 10-minute blocks. Exciting, but never presented with unnecessary drama. Very well done folks. Very well done.

  • dizzyolly
    dizzyolly Hace un mes

    I know this video is old but I want to learn about early homosapien interaction with others “homo” species, Mabel homo erectus!

  • Arian Terra
    Arian Terra Hace un mes

    I always wonder, why all lifeforms transfer information via DNA/RNA? Is it possible to transfer genetic information without DNA? Why DNA become the most popular method of transferring information? Is there any lifeforms which doesn't use DNA/RNA?

  • Captain Qwaz Caz
    Captain Qwaz Caz Hace un mes +1

    When you know someone called Luca and you hear he lives in hydrothermal underwater vents.

  • Alex Smith
    Alex Smith Hace un mes

    Live ur videos!

  • Jim Mauch
    Jim Mauch Hace un mes

    Could a LUCA be understood through all the tangled mess of early horizontal gene transfer?

  • Supertyp
    Supertyp Hace un mes

    I believe there was not one LUCA but multiple. It's possible that the earliest forms of RNA have existed in some kind of a goo, maybe encapsulated by micells of triglcerides (fatty acids + glycerine.).These might have shared molecules, proteines and genes that gave them chemical advantage over other specimen until eventualy some became complex enough to survive on their own.

  • Yakarot Sennin
    Yakarot Sennin Hace un mes

    How far back in time could a stranded time traveler still survive by living off the land?

    • Polydynamix
      Polydynamix Hace un mes

      100's of millions of years, around the formation of... um... land. Prior to that a time traveler would have to do a lot of swimming, like 24 hours a day.

  • Mark Grace
    Mark Grace Hace un mes

    I’m occasionally puzzled by the breathless fawning over humanity’s quest to know our origins. Admittedly a relatively few powerful people have swooned over that idea. And I suppose if prompted I might dig up some Gratitude or that quest. Mostly I just get really tired of the way this quest is twisted to serve ideological agendas. Not much different than the ancient origin stories.

  • ubertser
    ubertser Hace un mes

    just curious life is a living thing, matter and all other stuff are none living, how can it make a living thing, where does progenotes came from

  • Andi Garcia
    Andi Garcia Hace un mes

    I think as that thermal vent species thrived there were only so many vents so when they became too many for their environment had to have other things to feed on.

  • Brian Black
    Brian Black Hace un mes

    We are all parasites

  • Michael
    Michael Hace un mes

    My name is Luca
    I live on the second floor

  • Manos
    Manos Hace un mes +2

    What an amazing video!!

  • Anthony
    Anthony Hace un mes

    I assume it is like the GUT and doesn't actually have an answer because we are wrong about the question.

  • Enrique Cruz
    Enrique Cruz Hace un mes

    The day we achieve quantum computers, alot of answers will be answered, we actually have alot of formulas that are pretty close to reality but never conclude because of an infinite imaginary number. If quantum computers can calculate infinite times faster than regular computers, we should be able to trace this genomes much much much faster. And yes, I´m high af right now lol

  • Frances Magro
    Frances Magro Hace un mes +2

    Love this stuff. Thanks for making it all so easy to understand!

  • Amina Asif
    Amina Asif Hace un mes

    the only type of pbs vedio i get. oh thank God

  • Manchris Jbisd
    Manchris Jbisd Hace un mes

    Old Man Luca.

  • mickey sup bro
    mickey sup bro Hace 2 meses

    8:35 there is also the possibility that both of the genes evolved independently of each other

    • Whitney Washington
      Whitney Washington Hace un mes

      No you will not get the exact same copy of the gene that evolved independently. We have seen similar genes that did evolve independently, they have difference and are not exactly the same.

  • sebern2
    sebern2 Hace 2 meses +1

    Love the collaboration!

  • Allan Ward
    Allan Ward Hace 2 meses

    Did Luca live on the second floor?

  • this one
    this one Hace 2 meses


  • Matthew Seven
    Matthew Seven Hace 2 meses

    Luca came from a meteor?

  • Davit Barbakadze
    Davit Barbakadze Hace 2 meses

    What about a theory that Mitochondria was once a bacteria living on its own, before it engaged into symbiotic relationship with prokaryote? Doesn't it change both versions of the trees of life in this clip? Like our common ancestor is a rather a merge of bacteria and prokaryote.

  • Adam S.
    Adam S. Hace 2 meses

    No one ever asked what LUCA was though.. :/

  • Jimmy Kruse
    Jimmy Kruse Hace 2 meses

    if you look at 8:47 you'll find the source of half the genetic information in your body

  • robbiehobbs2009
    robbiehobbs2009 Hace 2 meses

    Just when you think your a little smart.... Just try and understand some of this.

  • acf2802
    acf2802 Hace 2 meses

    I know where LUCA lived. She lived on the second floor, upstairs from you. I think you've seen her before.

  • david yen
    david yen Hace 2 meses

    So pretty much we are inbreds

  • blueckaym
    blueckaym Hace 2 meses

    Excellent videos! All of them :)
    It's a weird feeling to remember that you got some of these ideas long time ago.
    In my case , as a teen I got the idea that life organisms seems to defy the chaotic universe and entropy ... even thought I knew antropy as a very abstract concept.
    Anyway, i would like to know more about the first replicators. I would love to understand the mystery of the patterns that turned some basic chemistry into stuff that can evolve.
    As an Ok developer I'm really curious about self-replicators. And the fact that they started from elements simple enough to create computer model of the primodial soup, speed up the chemistry lottery and evolution and see what pops up :)

  • Josh Clarke
    Josh Clarke Hace 2 meses

    8:33 Could convergent evolution be a possible 3rd option. Albeit less likely?

    • Whitney Washington
      Whitney Washington Hace un mes +1

      No not for the exact same gene. Along with that there other factors that shows it is not convergent evolution such as being on the same loci.

  • Frank Hoffman
    Frank Hoffman Hace 2 meses

    The common ''ancestor'' may not have been alive at all, in the sense that we understand life. It may have been a complex, replicating molecule, that somehow had the ability to replicate into something not exactly the same as the''parent'' molecule.

  • noobpro 97
    noobpro 97 Hace 2 meses

    I thought I was watching scishow or something for a second when I saw hank.

    DAVID MELLA Hace 2 meses

    I thought they we the same guy...

  • james staggs
    james staggs Hace 2 meses

    My name is Luca, I live on the second floor........oh also I was the origin of all life that exists today.

    • rdaveh
      rdaveh Hace 2 meses

      Yeah, every time he said "the search for LUCA", I was like "Dude, look on the second floor!"

  • Raymus Munt
    Raymus Munt Hace 2 meses

    What are the current theories on abiogenesis?

    • Uzziya
      Uzziya Hace 2 meses

      The RNA world hypothesis is by far the best we have but it still has its issues.
      Primarily among them is a complete lack of actual evidence. We can map damn near every reaction required to form the first life but because sub-cellular molecules don't fossilise there's no real way to test if which of the theoretical reaction series we have is correct.

  • Bigspiderman
    Bigspiderman Hace 2 meses

    O'dow is not my favorite prompt reader. There is something that is very unsettling about him. He is a bit creepy. Like is a horror flick. When someone is possessed and they open their mouth inhumanly wide.

  • Anthony Wolf
    Anthony Wolf Hace 2 meses

    Woah trigger warning when you start petting that 10:14

  • Oscar Korlowsky
    Oscar Korlowsky Hace 2 meses

    The big bang wasn't the beginning of everything, life already existed in other planets maybe even humans

    • The Bronze Tank
      The Bronze Tank Hace 2 meses

      not humans humans are an earth only occurrence

  • Julianna Okike
    Julianna Okike Hace 2 meses

    What is the significance of a thumbnails? I need to understand someone.

  • Listen The Shadow
    Listen The Shadow Hace 2 meses

    how about the Last Integral Genetic Material Ancestor?

  • James Farrell
    James Farrell Hace 2 meses

    What happens in PBS Space Time doesn't stay in PBS Space Time and that break's the law's of physics.
    There might be a tear in the cosmos heading twords ESclips right now.

  • James Farrell
    James Farrell Hace 2 meses

    If you like this check out answers with Joe
    Joe Scott
    Awesome channel and fantastic topics
    Great way to understand complex topics in a clear and well rounded answers

  • James Farrell
    James Farrell Hace 2 meses

    I love when different ESclips Creator's come together and in this case they are among my favorites.

  • bianca botanica
    bianca botanica Hace 2 meses

    I was waiting for you to get to the part where mitochondria and the cell join forces and have a symbiotic relationship...

  • Shockprowl
    Shockprowl Hace 3 meses +1

    Stunning. Makes me feel very small... but also very big...

  • Allen Hecker
    Allen Hecker Hace 3 meses

    Susanne Vega knows where to find Luca...

  • I sell air
    I sell air Hace 3 meses

    I think life slowly evolved from non living materials, much like how speciation occurs.

  • Danny
    Danny Hace 3 meses

    I AM LUCA !

  • Khurshid Alam Sahaji
    Khurshid Alam Sahaji Hace 3 meses

    I would love to tell other people about you Hank and in fact, I have done so on some occasions but there are so few who actually care about these things that you are discussing here. Most are busy running after things that won't last or are busy experiencing things that nobody will remember in the next decade or even a year. So much wasted time, the only currency that matters.

  • AaronShenghao
    AaronShenghao Hace 3 meses

    He discovered IKEA?... wait... oh.... nvm

  • Janusha
    Janusha Hace 3 meses +1

    I like anything clever. This works for me / Subscribe and ring the bell.

  • MJT
    MJT Hace 3 meses

    Great graphics

  • Stark-A-Licious
    Stark-A-Licious Hace 3 meses

    What is this? A crossover episode?

  • Adam Trombley
    Adam Trombley Hace 3 meses

    More Luca please

  • Maboeln Reads
    Maboeln Reads Hace 3 meses

    If LUCA is not the first to have lived, then it must also have an ancestor, which means it isn’t top of the tree...??

  • WannaBeButFailingMiserabley- Cook

    Where can I find a detailed chart of the tree of life?

  • vf12497439
    vf12497439 Hace 3 meses

    Great video!

  • Edward Perez
    Edward Perez Hace 3 meses


  • TripedalTroductions
    TripedalTroductions Hace 3 meses

    So is it possible that another, completely independent LUCA lives in the ocean of Europa?

  • Jason Richter
    Jason Richter Hace 3 meses

    Love the way you explain things in a way that even our president could understand. Thanks and keep it up!

  • inkooh8
    inkooh8 Hace 3 meses

    What about a third option: independently evolving to acquire the same genetic markers in convergent evolution (not just trading or both evolving from LUKA)?

  • Tennessee Exposed
    Tennessee Exposed Hace 3 meses

    So we're luca's grandchildren?

  • Tennessee Exposed
    Tennessee Exposed Hace 3 meses

    So life started in volcanoes?

  • Gordon Cavanaugh
    Gordon Cavanaugh Hace 3 meses

    Over the last 3,500 years of mankind we have the DNA found in the bodies of ancient man. That's 150 generations of mankind and yet no scientist has discovered one gene that is different today from that of 3,500 years ago. Of the tens of thousand of species over the last 200 years we have not documented one species that has evolved into another species. Of the tens of thousand of species over the many generations one would think we should be seeing evolution occurring on a regular basis. And it isn't just that one new species has to be born. You need another one of the same species to be born but of a different sex, living at the same time and in close proximity to each other so that they can mate. That's a weak point in a theory that says we come from one organism. Nature does not work that way. It creates an over abundance of seeds that have to be fertilized. Man produces millions of sperm just to fertilize one egg. And that's what would be necessary to create a new species. There would have to be lots of mutations in a species that would produce lots of a new species. The most successful species being the one that could survive in the environment and find a mate. A better explanation is of a viral pandemic that sweeps over an area and those species in that area have mutations in their offspring's DNA. In that way you have lots of mutations, at the same time in close proximity to each other to mate. And that evidence is found in our DNA with about 8 percent of our DNA made up of viruses. A virus could have swept over a part of Africa where primates lived and modern man could have been a mutation of a new species that was close enough to the primate for them to raise as their own offspring. So we didn't come from one, we came from many and we are just the lucky one that survived all the different variations.

  • daky dakyion
    daky dakyion Hace 3 meses

    How did the food chains start ?

    • Garlic Wind
      Garlic Wind Hace 3 meses

      I think it was McDonald's, but maybe it was A&W...

  • medexamtoolsdotcom
    medexamtoolsdotcom Hace 3 meses

    The first life forms metabolized hydrogen and carbon dioxide into methane and oxygen?! Does that reaction even release energy? It seems like it wouldn't. Or at least not much. Or maybe they converted carbon dioxide and MORE hydrogen into methane and water. That seems more plausible.

  • whatsgoingon07
    whatsgoingon07 Hace 3 meses +2

    I’ve learned more from this video than my entire intro to microbiology class

  • Kiliman Jaro
    Kiliman Jaro Hace 3 meses

    When you say we lost LUCA's gene, do you mean we all have it but it's “dorment”, like the genes to make fur are in our eyes, or do you mean we actually lost it? Because if the answer it's the later, why wouldn’t bacteria and archea have lost it too?

  • Kiliman Jaro
    Kiliman Jaro Hace 3 meses

    Couldn't the “universal genes” from LUCA have disappeared by mutation in most individuals after such a long period of time?

  • Atomicwinter 31
    Atomicwinter 31 Hace 3 meses

    What you should make is a massive series of short videos, maybe 3-10 minutes long each, defining the reptiles, fish, avian species, amphibians, or whatever of our past and present! Thatd be a huge project, but I think it'd be super cool!!!

  • Jimmy Ponciano
    Jimmy Ponciano Hace 3 meses

    Answer is Carbon

  • cacadodo666
    cacadodo666 Hace 3 meses

    Progenotes from an ooze...far fetched as hell

  • San junior
    San junior Hace 3 meses

    still the puzzling question is : how did the sense of individuality developed. How the idea of one organism identifying itself as different identity even took place.

  • Nate I
    Nate I Hace 3 meses

    I'd like to hear from the currently 259 people who downvoted this video. Why?

  • SebastianTheGreat
    SebastianTheGreat Hace 3 meses

    Top 10 anime crossovers

  • Rr Ii
    Rr Ii Hace 3 meses +1

    Yes, ! Just. One Question.
    How many generation is this "original great great... Parent.
    From me ruffly ?
    Taking into account different and varied " turn over rate's " of of our varied "evolutionary past ancestors.

    • Rr Ii
      Rr Ii Hace 3 meses

      Go bears 😎

    • Rr Ii
      Rr Ii Hace 3 meses

      Thanks Nate

    • Nate I
      Nate I Hace 3 meses +1

      Honestly, probably many many trillion, trillion. Which is many sextillian (1,000,000,000,000,000,000,000,000 ). Microbes in a petri dish can undergo millions of divisions in a day or three. Heck it was probably many thousands of trillions by the time life got to multicellular organisms.

  • TharrisNogaud
    TharrisNogaud Hace 3 meses +4

    I love my Grand-Luca