How Humans Lost Their Fur

We’re the only primate without a coat of thick fur. It turns out that this small change in our appearance has had huge consequences for our ability to regulate our body temperature, and ultimately, it helped shape the evolution of our entire lineage.
Thank you to Julio Lacerda ( for the excellent Australopithecus and persistence hunting Homo erectus illustrations!
Produced in collaboration with PBS Digital Studios:
Super special thanks to the following Patreon patrons for helping make Eons possible:
Simon read, Reco Lee, Sean C. Kennedy, Eric Roberto Rodriguez, Charles Copley, Hillary Ryde-Collins, Facts Dinosaurs, Frida, YaBoiSam36, Matthew Donnelly, Yu Mei, Colleen Troussel, Dan Ritter, faxo, Gary Walker, Amanda Straw, Stephanie Tan, Anthony Callaghan, Minyuan Li, Ben Cooper, Leonid, Robert Noah, Matt Parker, Heathe Kyle Yeakley, Jerrit Erickson, Jack Arbuckle, Anton Bryl, MissyElliottSmith, Zachary Spencer, Stefan Weber, Andrey, Ilya Murashov, Larry Wilson, Merri Snaidman, Gabriel Cortez, Marcus Lejon, Robert Arévalo, Todd Dittman, Betsy Radley, Laura Sanborn, PS, Philip Slingerland, John Vanek, Eric Vonk, Henrik Peteri, Jon Monteiro, James Bording, Miles Chaston, Michael McClellan, Jeff Graham, Maria Humphrey, Daisuke Goto, Gregory Kintz, Chandler Bass, Tsee Lee, Robert Hill
If you'd like to support the channel, head over to and pledge for some cool rewards!
Want to follow Eons elsewhere on the internet?
Facebook -
Twitter -
Instagram -

Video herunterladen


  • I still believe that sexual selection also played a major role in loosing fur

    ArminiusAurusArminiusAurusVor Tag
  • Is it just me or anybody else getting the feeling that she is NOT happy with her sweat glands...

    Nova RyanNova RyanVor 2 Tage
  • WOW,I love your videos, I order the same one from four days ago, delivery by DHL,great quality !!!!

    Willa HoustonWilla HoustonVor 2 Tage
  • Sweating isn't that gross, relax

    peanutgallery77peanutgallery77Vor 2 Tage
  • She really doesn't understand the difference between the words naked and bald.

    MabDarogan2MabDarogan2Vor 2 Tage
  • we do have furr. just little of it called BODY HAIRS, smh yall needa shaVe.

    ღ.Տɧҽղzིɑi̾.ღღ.Տɧҽղzིɑi̾.ღVor 2 Tage
  • I mean us humans want to be hairless 😂 Females shave (I also shave I’m a female because I like my legs hairless) I can’t imagine humans looking with a thick fur coat like any other animal

    Why am I still here I ship Gerard and FrankWhy am I still here I ship Gerard and FrankVor 2 Tage
    • we look like werewolfves

      ღ.Տɧҽղzིɑi̾.ღღ.Տɧҽղzིɑi̾.ღVor 2 Tage
  • Not true, i still have it.

    Ian BellIan BellVor 4 Tage
  • A human is from are ancestors southern ape

    Thiana PunoThiana PunoVor 6 Tage
  • Persistence hunting, eh? ...see the movie "Fair Chase"? ;)

    Todd MatthewsTodd MatthewsVor 7 Tage
  • I worship science

    Sarah FayecroftSarah FayecroftVor 8 Tage
  • Mon ke

    Molly_music bandMolly_music bandVor 8 Tage
  • So from what I’m understanding here, the Sun caused racism.

    Psychlops 924Psychlops 924Vor 8 Tage
    • LOLLL !!!

      ღ.Տɧҽղzིɑi̾.ღღ.Տɧҽղzིɑi̾.ღVor 2 Tage
  • It's just a hypothesis. ... at this stage it's more conceivable to me that the latest thinking is that primordial inorganic chemistry gave rise to the precursors to organic molecular cellular machinery over deep time and many simple steps.

    Gregory SagegreeneGregory SagegreeneVor 9 Tage
  • Return to Monkey

    HobbsIsDadHobbsIsDadVor 9 Tage
  • Those jeans are stuffed tight! I wonder what sweat and fur they conceal.

    Greg PGreg PVor 10 Tage
  • The running endurance is more likely to be migratory travel to and from annual harvest sites. Tubers here in the spring. Mushrooms in the summer in the forest, Late season grain in the plain and berries in the bush country for fall and winter tuber and bean resources. The hunting scenario makes little sense to me since we can't outrun predators without a massive head start, and our range far surpasses the distance of any animal besides a horse. So unless we evolved to hunt horses, animals of some stature in most civilizations, then one must be open to additional evolutionary options to the hunting scenario. I ran down and speared one water buffalo, now I am going to keep running down the rest until they are all dead? I guess. Woolly rhinos are said to have had anthropological aid in their demise.There is the Tarahumara example after all, little hunting there.

    SNAFUPheonixSNAFUPheonixVor 10 Tage
  • We first had to loose our scales , gills ,beaks , feathers .......................and finally a lot of our fur although we managed to keep some of our fur. Evolution is truly fantastical and enlightening.

    Matter of FactMatter of FactVor 10 Tage
  • We lost all that fur to chase things (which also had fur I may add) for a few hours to keep cool but at night or autumn/winter time we just lit fires to keep warm? They are some massive leaps of faith in regards to our evolution. I mean surely it’s a bit more complex than that? It’s not like “oh hey ugg, where’s all ya fur gone?” Oh my great great great greeeeaaat grandad did a lot of running back in the day so here I am 🤷‍♂️

    Private EmailPrivate EmailVor 11 Tage
  • How did we keep warm at night after we lost most of our hair .

    Kervin AshongKervin AshongVor 11 Tage
  • It’s been said that humans evolved from monkey business

    gloria hodgegloria hodgeVor 11 Tage
  • simple, we lost fur because we can make a fire to heat our body when its cold 😅

    Andrei HidayatAndrei HidayatVor 12 Tage
  • Why do many mammals have fur? I believe it is to keep mosquitos away. and even humans can sometimes feel when a mosquito lands on your arm cause hair is like an antenna. Even a mammal that is about to get grabbed by a predator gets a split second warning by the barrier of hair surrounding it's body. Time to react...get away. That's my theory and I'm sticking to it.

    desotopetedesotopeteVor 12 Tage
  • Also, hair on our heads aren’t necessarily “leftovers” from having fur, as many animals have hair on their heads even if they still have their fur.

    When Grapes PopWhen Grapes PopVor 12 Tage
  • Fur also protects against scratches👍

    When Grapes PopWhen Grapes PopVor 12 Tage
  • Simpler than this. People invented clothes, shoes, and bags. So suddenly cold days didn't matter, just kill some other animal. When it gets hot, skin disease is a problem. Just go naked!!

    uggligruggligrVor 13 Tage
  • Homo erectus 😂

    Callmecarson Isn'tapedoCallmecarson Isn'tapedoVor 14 Tage
  • "and fur is one of the defining characteristics of mammals" Que film of a fur covered marsupial ! ,not the greatest in educational film editing moments.

    EvilrocoEvilrocoVor 15 Tage
  • Humans never had fur

    johnnylyonns79johnnylyonns79Vor 16 Tage
    • @Hello There he said human never have fur but we have little fur

      Moneychase ChoppaMoneychase ChoppaVor 10 Tage
    • They definetely did at some point

      Tinymon31Tinymon31Vor 13 Tage
    • U sure?

      Callmecarson Isn'tapedoCallmecarson Isn'tapedoVor 14 Tage
  • So does that mean hairy people are related to earlier humans or?

    Erica GhelfiErica GhelfiVor 16 Tage
    • @Tinymon31 yes

      Callmecarson Isn'tapedoCallmecarson Isn'tapedoVor 13 Tage
    • @Callmecarson Isn'tapedo reject modernity. Return to monke

      Tinymon31Tinymon31Vor 13 Tage
    • They are turning back into monke

      Callmecarson Isn'tapedoCallmecarson Isn'tapedoVor 14 Tage
    • No, its just that this mutation past to their uncestors, while to others didn't. we all have hair, but to some is too small to see it .

      Wake No.Wake No.Vor 15 Tage
  • Kallie: We humans are the only primates that can engage in persistence hunting. Me: I’ll stick to my .308 Winchester if it’s all the same to you.

    Ben BurgessBen BurgessVor 17 Tage
  • I see now. I’ve been balding for over 30 years, and you’ve explained why I still have few hair on the top and sides of my head... They can help me to sweat effectively, and that’s why the gene inside of me would not let go. You’ve been very helpful, girl. Thank you very much. 😉

    Philip WuPhilip WuVor 17 Tage
  • Actually it was lost at the prehistoric airport.

    Cosmic Craig I.Cosmic Craig I.Vor 17 Tage
  • Don't call sweat gross. Please.

    Amie VaughanAmie VaughanVor 18 Tage
  • So that's basically why I'm losing my hair. gotcha

    Yeyun ChoiYeyun ChoiVor 18 Tage
  • Obviously she has never met a Persian

    Capt. SlewCapt. SlewVor 19 Tage
  • When you realize humans are just the hairless cat of great primates.

    tl fretl freVor 19 Tage
  • There is actually a spices of cats that actually doesn't have fur

    Shinya NovikovShinya NovikovVor 19 Tage
  • Its just as well our evolution was not based on emotive qualities such as what is gross, otherwise we would soon have reached a dead end. But current fashion trends for many regarding our hirsute bodies appear to find biological function as unacceptable or objectionable.

    In TricacyIn TricacyVor 19 Tage
  • Am i the only one who find her pretty?

    04 TECH04 TECHVor 20 Tage
  • We were never Monkeys you PBas Idiots...probably PBS was hairless meerkats...or lemmings

    Geo BignTallGeo BignTallVor 20 Tage
    • I feel like, from objectively looking at your comment that you don’t ve the most firm grasp on evolution. Before you make a statement like this, do some research. Yes you are true, homo sapien never evolved from monkeys. We evolved from an ancestor of great apes

      Tinymon31Tinymon31Vor 13 Tage
    • lmao no one is saying that humans were monkeys

      Greatest AxolotlGreatest AxolotlVor 20 Tage
  • Can I watch this with my new Roku?

    Tran The CleverTran The CleverVor 20 Tage
  • I'm starting to realize how unfit almost everyone is lol

    Christopher GranadosChristopher GranadosVor 20 Tage
  • She said pubic (Weird kid noises)

    Didi HassanDidi HassanVor 21 Tag
  • Even as a solid rock is unshaken by the wind, so are the wise unshaken by praise or blame.

    Tran The CutestTran The CutestVor 21 Tag
  • Such an interesting and scientifically sound script, and she discredits the whole thing by overstressing how gross she thinks sweat is. Terrible performance and bad ethic, just to seem "cool". Pun intended.

    Ane RandaAne RandaVor 21 Tag
  • I find when I "manscape" I dry off faster when I sweat and stay cooler. You don't need body hair if you wear clothes. It's like we don't belong in this harsh Earth atmosphere with the other animals.

    Pauly MacPauly MacVor 21 Tag
  • Reindeer jokes Sleigh.

    Ken LeeKen LeeVor 21 Tag
  • Why we don't have fur because our ancestors are reptiles 🔥

    Kameswaran NKameswaran NVor 22 Tage
  • The Khoi people in South Africa, Namibia and Tanzania can still chase their prey until it gets tired. They are hunters and are one of the earliest indigenious people.

    K9Fang AMVsK9Fang AMVsVor 22 Tage
  • Cute!

    Peter WilliamsonPeter WilliamsonVor 22 Tage
  • Lemme save you 12 minutes *We Shaved*

    FlamingAtheistFlamingAtheistVor 22 Tage
  • Apes do not require modification

    Don KDon KVor 22 Tage
    • @Greatest Axolotl Microbes ,extremely well designed also do not require modification

      Don KDon KVor 20 Tage
    • @Greatest Axolotl That is a presumption of a non existent "variable"

      Don KDon KVor 20 Tage
    • waht

      Greatest AxolotlGreatest AxolotlVor 20 Tage
  • 4:27 Strategically placed antelope ear and horn.

    Peter FraserPeter FraserVor 22 Tage
  • So since humans are becoming less active does that mean well evolve to have fur again

    Maddox AtomMaddox AtomVor 22 Tage
  • were furless because we started out as aquatic apes

    • merfolk?

      Greatest AxolotlGreatest AxolotlVor 20 Tage
  • 0:44 that's because we are smart 🤣

    Sik talkSik talkVor 23 Tage
  • 20 years ago, I watched a science show saying we lost our hair because we had become semi-aquatic. Now they are saying we lost it because we were persistence hunters. Next decade it will be something different. PHDs always need some new topic to do their dissertations on, so they come up whatever novel theory their imaginations spawn. But that doesn't make it history or evolution; it's just an idea.

    Allan AmbroAllan AmbroVor 23 Tage
    • I did a little digging and I think I know what you’re talking about, but it was a hypothesis that was taken down almost immediately. I’m not surprised you didn’t hear about it. A sad truth about the way we consume media is that if any scientist makes a bold claim and later revokes it and says they were wrong, no one pays attention to their revoke

      Tinymon31Tinymon31Vor 13 Tage
    • I’m 100% you heard the science show wrong because homo sapien is definetely not semi-aquatic. Plus, it would take a very long stretch of time to evolve that, and I believe this evolution would be far more well known of it was true

      Tinymon31Tinymon31Vor 13 Tage
  • But what about elephants, hippos, rhinos, and especially pigs vs. boars? EDIT: i am aware that the aforementioned are not primates, but they are mammals, so....just curious.

    Johnny McAuliffeJohnny McAuliffeVor 23 Tage
  • Hmm, ever notice that lots of mammals that live in the water have no fur? What if we went hairless due to being a water primate. Look at our nose, why is it shaped like that? Perhaps walking upright was to keep our heads above water? I think more research needs to done on this.

    Grow SomeplaceGrow SomeplaceVor 23 Tage
    • merfolk?

      Greatest AxolotlGreatest AxolotlVor 20 Tage
  • 3.5 l of sweat per hour max? And 1 l on averge? Are you sure you got the unit right ?

    May the Science be with YouMay the Science be with YouVor 23 Tage
  • It is because people invented how to cut their own hair And after that our hair producers gets slower at making hair and made changes in our genetics and that passed to the new generation to new generations

    Riko Ch.Riko Ch.Vor 23 Tage
  • But why hair and beard grow without limit while the fur doesn't? Why apes don't grow beard and long hair? I hoped you talked about it at the end =(

    Gabrulo_KnifemakingGabrulo_KnifemakingVor 23 Tage
  • Look at this monke

    AudeeAudeeVor 23 Tage
  • 🤣🤣🤣😄

    Beverly DenmanBeverly DenmanVor 24 Tage
  • your "aand" with that nasal sound is off putting

    Chandra SekharChandra SekharVor 24 Tage
  • Well, my human ancestors did not have fur to begin with. I don't know what happened to yours.

    Erick VictorinoErick VictorinoVor 24 Tage
    • we still have fur lmao its just not as thick

      Greatest AxolotlGreatest AxolotlVor 20 Tage
  • The scientific definition of fur may be objective, but the Practical definition of fur is subjective.

    David O'BanionDavid O'BanionVor 24 Tage
  • I lost my fur through laser hair removal.

    Beef SupremeBeef SupremeVor 24 Tage
    • L

      Callmecarson Isn'tapedoCallmecarson Isn'tapedoVor 14 Tage
    • Cooo

      Callmecarson Isn'tapedoCallmecarson Isn'tapedoVor 14 Tage
  • Can I watch this with my new Roku?

    Tran The CleverTran The CleverVor 24 Tage
How Humans Lost Their Fur