Why Are We The Only Humans Left?

  • Published: 26 April 2017
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    In part 2 of our special series on human ancestry, we ask why we are the only surviving branch on the human evolutionary tree. Just 50,000-100,000 years ago, Earth was home to three or four separate human species, including our most famous cousins: the Neanderthals. New research has shown that Neanderthals were not the brutish, unintelligent cavemen that cartoons make them out to be. They were creative, smart, social, and perhaps even had complex language. So why did they go extinct as soon as Homo sapiens moved into their territory? Does any trace of them live on today? Why don’t we have Neanderthal neighbors?


    Papagianni, Dimitra, and Michael A. Morse. The Neanderthals Rediscovered: How Modern Science Is Rewriting Their Story. Thames & Hudson, 2015. http://amzn.to/2oov6GG (Library: http://www.worldcat.org/oclc/923279213)

    Stringer, Chris. “Lone survivors: How we came to be the only humans on earth.” Macmillan, 2012. http://amzn.to/2oIFg3q (Library: http://www.worldcat.org/oclc/855581724)

    Tattersall, Ian. “Masters of the planet: the search for our human origins.” Macmillan, 2012. http://amzn.to/2pOZrKS (Library: http://www.worldcat.org/oclc/733231407)

    Walter, Chip. “Last ape standing: the seven-million-year story of how and why we survived.” Bloomsbury Publishing USA, 2013. http://amzn.to/2pP2liy (Library: http://www.worldcat.org/oclc/872121723)


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Comments • 10 656

  • It's Okay To Be Smart
    It's Okay To Be Smart   2 years back

    It's lonely being the only humans left. Don't you wish we still had some Neanderthal neighbors?

    • p1nkieee msp
      p1nkieee msp  1 months back


    • Big_k
      Big_k  1 months back

      We do, they are mainly in the Middle East. Some trickling into Germany, and France so they are closer that you think.

    • Herta Schneider
      Herta Schneider  1 months back

      It's Okay To Be Smart you wouldn’t have any, as I bet you’d just destroy them too. Look at what you are doing to non-human animals if you’re not vegan.

    • Herta Schneider
      Herta Schneider  1 months back

      And lonely? THEN DON’T ENSLAVE, HURT AND DESTROY ALL OTHERS! Oh my goodness!🤦🏻‍♀️ I cannot wait until either you all learn or everyone who refuses to disappears!

    OH NO OH NO  6 hours back

    if they were alive and some really rich people kept them as pets
    and shows them their richass tv they will break it

    • D4 The kid
      D4 The kid  9 hours back

      This whole dam world needs to end

      • potato and salad
        potato and salad  19 hours back

        u look like matpat (film and game theory)

        • blazing through cyberspace

          insane amount of appreciation for *XTINCT

          • ThinkingSushi
            ThinkingSushi  1 days back

            Why am I ugly, well some questions can’t be awsnered

            • Djbrother S
              Djbrother S  2 days back

              Theories not facts

              • Rory N
                Rory N  2 days back

                Maybe we completely mixed species. Like maybe we're not pure humans. Maybe we're were the mutts of prime apes.

                • Dodi Boi
                  Dodi Boi  2 days back

                  I thought scientist already proved evolution was fake....

                  • Jackal head
                    Jackal head  3 days back

                    So since all the rest of us except black people have a neanderthal gene within ourselves so does that make us a different species from black people??

                    • money Campbell
                      money Campbell  1 days back

                      Jackal head what no only whites and Asians have Neanderthal genes not hispanics blacks or Indians and arabs

                  • Brandon Howard
                    Brandon Howard  3 days back

                    This channel rather should be called, "It's Okay To Maintain Brainwashing On Race."

                    • Classy Myrmidon
                      Classy Myrmidon  3 days back

                      I guess swaggersouls is a Neanderthal

                      • mason espitee
                        mason espitee  3 days back

                        They must be tall.

                        • Scott Girls
                          Scott Girls  4 days back

                          I heard that people of European backgrounds have Neanderthal DNA .
                          I’m not a scientist tho

                          • The Potential In you
                            The Potential In you  4 days back

                            How we use our brain? Then surely we r bigger than our brains, we are sprites in bodies

                            • Test1 \test2
                              Test1 \test2  4 days back

                              Caucasians have more Neanderthal DNA and they were smart.

                              • Lindsey Allison Westhaven

                                We are the last ones left because we invented Tiddly Winks and Root Beer Fizzies!

                                • Catato Blob
                                  Catato Blob  4 days back

                                  Nah, Neanderthals aren't extinct, you can find us in the comments section.

                                  • Joel W
                                    Joel W  4 days back


                                    • The 1Jamin Nelson
                                      The 1Jamin Nelson  4 days back


                                      • Dragon Aspect
                                        Dragon Aspect  4 days back

                                        Neanderthals are dumber than us, but physically they are stronger.

                                        • Suzanne Jung
                                          Suzanne Jung  5 days back

                                          The add I got was "The first man" how more fitting could this get?

                                          • Joey Rutledge
                                            Joey Rutledge  5 days back

                                            There is smart a$ses and idiotic maniacs

                                            • Carl Quintyne
                                              Carl Quintyne  5 days back

                                              My prediction of the Earth is the size of Pluto of an black hole will Enter the earth 🌍 and Suck everything up the ground will melt to the mantle and everything will melt the black hole will suck the earth with everybody and every living thing in it and The rich people will take a flight to Mars but there’s toxic soil so the people on mars won’t leave long there’s no water it’s hot there so Basically we won’t be Extinct because we will be in 2D in the black hole which a black hole really isn’t a hole it will take us to a different Universe but the fact we’re not dead everything and one is a File we’ll be flat and can’t move but float through a passage to something different but it will confuse everybody and one because you won’t where you are or what type of planet your going to fall in

                                              • Ninjaraku Pwnz
                                                Ninjaraku Pwnz  5 days back

                                                see what happened? they interbred with other species, then became null. so which ethnicity is next on the evolutionary chopping block? haaa

                                                • HERPY DERPEDY
                                                  HERPY DERPEDY  1 weeks back

                                                  Maybe we were just racist like today and hunted them down.

                                                  • Marcos Constantine
                                                    Marcos Constantine  1 weeks back

                                                    Bigfoot silva is 100% neanderthal

                                                    • Sai Gudi
                                                      Sai Gudi  1 weeks back

                                                      *cotton headed ninny muggins*

                                                      • Tony C Stark
                                                        Tony C Stark  1 weeks back

                                                        What if Neanderthals are just a cover up of an alien civilization and we've been being lied to about our "genes''. ?

                                                        • Ninjaraku Pwnz
                                                          Ninjaraku Pwnz  5 days back

                                                          the cover up is that they were killed off by social selection based on their willingness to fall in line with the others, guess they should have learned not to slouch, seeing how in europe"most nit picky of posture and least neanderthal stature people, it's not hard to see that our genetics were swayed because of a long standing "greater good of evolution" again, set by those who chose to evolve rather than simply exist.

                                                      • Joe The Sapien
                                                        Joe The Sapien  1 weeks back

                                                        Damn a lot of ppl disliked this lol

                                                        • whiteboi_2002
                                                          whiteboi_2002  6 days back

                                                          Joe The Sapien I just noticed now 🤣

                                                      • Ab Nice
                                                        Ab Nice  1 weeks back

                                                        So basically black people kept Neanderthal alive through interbreeding but are consistently miss treated for their skin color being called monkeys/animals when their not that’s crazy

                                                        • Squidge
                                                          Squidge  1 weeks back

                                                          neanderthal's mixed with every race but sub-saharan africans.

                                                      • Lucky N
                                                        Lucky N  1 weeks back

                                                        Human uses 234235434574365894365790347695437590475932076568047603947604983768476084736954736587493650784658726378946975843567487658723656749387 foot long spear
                                                        Neanderthals use toy car
                                                        human uses 2019 rifles
                                                        Neanderthals: Waaa how are you 3958737469783987 decillion years ahead of us in tech?~
                                                        Neanderthals lose!

                                                        • Viv H
                                                          Viv H  1 weeks back

                                                          Am I supposed to be reading something

                                                      • Lucky N
                                                        Lucky N  1 weeks back

                                                        intellegence is the brain to body if the brain is big compared to the body, its more intellegent. nenderthanls have about 0.7% mode brain to body ratio.

                                                        • Eric Smith
                                                          Eric Smith  1 weeks back

                                                          There are no neanderthals. I think it's been sufficiently proven that the bones they used to support this crazy Theory simply had arthritic changes.

                                                          • The Coming And Discovery

                                                            Neadertals were as a result of cross-breeding therefore making them hybrids! Well some humans come from apes and I sure can tell u I and apes don't have any relationship, except that we all live on the same planet! Humans may have had so much beard cuz no one really shaved! There is no way in the world would a fish evolve into a butterfly, if there is then I sure can tell u are nuts! Science is not 100% accurate, neither is technology! There is no way you could use a circle formula to solve for speed, neither the other way around!

                                                            • Haer85
                                                              Haer85  1 weeks back

                                                              Would you call a Neanderthal a something or a someone ??
                                                              Would it be classed as homicide or genocide nowadays ??
                                                              Was burying their dead something spiritual or an early form of disease control ??
                                                              There’s so many questions and it’s fascinating.

                                                              • whiteboi_2002
                                                                whiteboi_2002  6 days back

                                                                Haer85 idk tbh

                                                              • Haer85
                                                                Haer85  6 days back

                                                                whiteboi_2002 definitely. Look at the calibre in which we kill ourselves. They stood no chance. Imagine if they survived, how different the world would be

                                                              • whiteboi_2002
                                                                whiteboi_2002  6 days back

                                                                Haer85 right but I think we humans completely killed them and most humans are still cruel these days, I mean it speaks for it self

                                                            • Jr Kaka
                                                              Jr Kaka  1 weeks back

                                                              Why do humans exists

                                                              • roner61
                                                                roner61  1 weeks back

                                                                Because evolution.

                                                            • Nathan Explosion
                                                              Nathan Explosion  2 weeks back

                                                              I always think about what would've happened if neanderthals were the dominant race and not humans, like how would our world be in 2019 if it were run by neanderthals.

                                                              • Mike Frezza
                                                                Mike Frezza  2 weeks back

                                                                The guy talking in the vide looks like a Neanderthal

                                                                • syed ishtiyaq ahmed
                                                                  syed ishtiyaq ahmed  2 weeks back

                                                                  Our ancestors were cool dudes . Proud to be humans ...

                                                                  • Jackson Kravik
                                                                    Jackson Kravik  2 weeks back

                                                                    Are Russians Neanderthals

                                                                    • Carl Kinder
                                                                      Carl Kinder  2 weeks back

                                                                      The real reason: we were way better at murder.

                                                                      • Ibrahim Diallo
                                                                        Ibrahim Diallo  2 weeks back

                                                                        I believe in God (Allah

                                                                        • The Poeletariat
                                                                          The Poeletariat  2 weeks back

                                                                          They were similar enough to us that it was possible to interbreed so we weren't entirely enemies at least.

                                                                          • sam clarke
                                                                            sam clarke  2 weeks back

                                                                            Knowing humans we definitely killed them all

                                                                            • Victor Luna
                                                                              Victor Luna  2 weeks back

                                                                              Knowing how humans are, we probably killed most of em 😂

                                                                              • Catato Blob
                                                                                Catato Blob  4 days back

                                                                                @Dima zlenko actually, I would say that sapiens is a very sensationalist take on non-fiction, and if that's your sole source of information about human prehistory, you should probably supplement that with actual research.

                                                                              • Dima zlenko
                                                                                Dima zlenko  5 days back

                                                                                this video is actually a bit wrong because we did killed most of them.
                                                                                there is a book about the human history all of the species that were back then and what happend to this day.
                                                                                the book called Sapiens: A Brief History of Humankind.

                                                                            • Jason Rockwell
                                                                              Jason Rockwell  2 weeks back

                                                                              Decent video but the Out of Africa theory has long since been disproven. Turkey as you know is the cradle of civilization.

                                                                              • vita Jou
                                                                                vita Jou  2 weeks back