The Evolution of the Heart (A Love Story)

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  • Published on: 13 February 2019
  • You can check out Google's Science Journal app at https://g.co/sciencejournal

    In order to understand where hearts came from, we have to go back to the earliest common ancestor of everything that has a heart. It took hundreds of millions of years, and countless different iterations of the same basic structure to lead to the heart that you have today.

    Thanks as always to Nobu Tamura for allowing us to use his wonderful paleoart: http://spinops.blogspot.com/

    Thanks to Ceri Thomas for the Ichthyostega reconstruction. Check out more of Ceri's paleoart at http://alphynix.tumblr.com and http://nixillustration.com

    Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

    Super special thanks to the following Patreon patrons for helping make Eons possible:

    Katie Fichtner, Anthony Callaghan, Larry Wilson, Merri Snaidman, Renzo Caimi Ordenes, John Vanek, Neil H. Gray, Marilyn Wolmart, Esmeralda Rupp-Spangle, Gregory Donovan, Ehit Dinesh Agarwal, سلطان الخليفي, Gabriel Cortez, Marcus Lejon, Robert Arévalo, Robert Hill, Kelby Reid, Todd Dittman, Betsy Radley, PS, Colin Sylvester, Philip Slingerland, Jose Garcia, Eric Vonk, Tony Wamsley, Henrik Peteri, Jonathan Wright, Jon Monteiro, James Bording, Brad Nicholls, Miles Chaston, Michael McClellan, Jeff Graham, Maria Humphrey, Nathan Paskett, Connor Jensen, Daisuke Goto, Hubert Rady, Yuntao Zhou, Gregory Kintz, Tyson Cleary, Chandler Bass, Maly Lor, Joao Ascensao, Tsee Lee, Sarah Fritts, Ron Harvey Jr, Jacob Gerke, Alex Yan

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    References:
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5378490/
    https://link.springer.com/article/10.1007%2Fs00018-007-6524-1
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2614224/
    https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1502-3931.1997.tb00458.x
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3097462/
    https://www.nature.com/articles/ncomms4560
    http://www.nhm.ac.uk/discover/news/2014/april/earliest-heart-blood-discovered.html
    http://www.sci-news.com/paleontology/science-fossil-oldest-known-cardiovascular-system-01839.html
    https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0201702
    https://www.ncbi.nlm.nih.gov/pubmed/7915669
    https://www.ncbi.nlm.nih.gov/pubmed/10355031
    https://genent.cals.ncsu.edu/bug-bytes/circulatory-system/
    https://onlinelibrary.wiley.com/doi/full/10.1111/brv.12439
    http://www.fossilmuseum.net/Fossil_Sites/whitesea/kimberella/kimberella.htm
    http://www.tulane.edu/~bfleury/diversity/labguide/mollannel.html
    https://academic.oup.com/mollus/article-abstract/42/1/46/1240276?redirectedFrom=PDF
    https://circsystems.weebly.com/mollusca.html
    https://www.britannica.com/animal/mollusk/Evolution-and-paleontology
    https://onlinelibrary.wiley.com/doi/full/10.1111/joa.12687
    https://www.thoughtco.com/evolution-of-the-human-heart-1224781
    https://www.sciencedirect.com/science/article/pii/S0167488912002868
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4459601/
    https://www.ncbi.nlm.nih.gov/pubmed/28905992
  • Runtime : 9:48
  • dinosaurs dinos paleo paleontology scishow eons pbs pbs digital studios hank green john green complexly fossils natural history heart muscle Fuxianhuia protensa snails fish arthropod mollusks circulatory system genes peristaltic pump gastropods tinman gene Nkx2-5 veins Neoproterozoic Era worms dorsal vessel common ancestor

COMMENTS: 40

  • Richard Deese
    Richard Deese   2 days ago

    Thanks! I do have one minor complaint [I know, I'm sorry ;) ]. I think this video would have been even more entertaining / informative, if you had included some numbers regarding when oxygen became a thing, when multicellular life started using it widely, and tracking the evolution of the heart along with the rise in atmospheric oxygen. Just trying to help! ;) Rikki Tikki.

  • One Nation Under God

    Amazing that our heart is so developed after just 35 days from conception. Such a shame some people believe abortions should be allowed clear up to birth.

  • SSFandomLove
    SSFandomLove   1 weeks ago

    I love this channel but every time I watch this guy’s video I keep getting distracted by his non-stop hips thrusts 🤣I would keep wondering why he’s doing that and then I would keep missing segments of the video lol(By the way I absolutely do not mean getting distracted “that way” 😅)

  • 1of3
    1of3   2 weeks ago

    Very informative. Maybe do that for other organs/problems like kidneys or waste disposal

  • Bethany Linebarger
    Bethany Linebarger   1 months ago

    I am still waiting on the episode covering the evolution of a the placenta that gave rise to live birth being a "thing." Did I just miss it?

  • S
    S   1 months ago

    Can you also do a video on Bioluminescence that must have also existed countless times in our past and not use exist in today’s time. The ocean must have had it back then numerous times for example.

  • S
    S   1 months ago

    Can you do a video on the evolution of bone to mobility for sea, land, and sky creatures... and some of its return to the previously mentioned niches.

  • nil bogg
    nil bogg   1 months ago

    I would like to see the "Evolution of the BRAIN". It is after all, the most important organ. It MUST be well researched...right?

  • Aishwarya Singh
    Aishwarya Singh   1 months ago

    Can you please do a video on the possibility of immortality in multi-cellular organisms!!

  • Joseph Banatlao
    Joseph Banatlao   1 months ago

    Wait, you mean it didn't came from Kingdom hearts?!

  • Tyler Merlin
    Tyler Merlin   1 months ago

    A wealth of information explained extremely well. Thanks.

  • Teacup Toe
    Teacup Toe   1 months ago

    Can you tell the story of gums? It's weird having pink squishy stuff around our teeth like that

  • sollidottingen
    sollidottingen   1 months ago

    I'm pretty sure people also say they'll give the D to someone.. Or the finger.

  • Thomas Just
    Thomas Just   1 months ago

    Music was unnesesary, romanticism was also not nesesary...It bored me and I lost interest...thumbs down

  • Bagville Babacar
    Bagville Babacar   2 months ago

    Good video. I have a question though. Of course creatures with hearts have DNA that makes hearts, but I don't get the reason that means these creatures are related. I think the video mentions that different creatures developed hearts separately too. So, the 'tinman' genes in flies just 'look like' the genes that make the human heart in people, what does that mean? That must be overly simplified because obviously the human heart is significantly different, which to me (a simple layperson) the human DNA should have significantly more and different instructions to build the human heart. Is that right? So in what way are the genes related? Why does that mean they related?

  • Ironweaver
    Ironweaver   2 months ago

    In which we learn that time lords are descended from squid.

  • Space dolphin corp.
    Space dolphin corp.   2 months ago

    Went to the google science journal. I didnt know Google was so much more awesome than id ever expect. THATS THE REASON WE ALL NEED GOOGLE FI. Thanks PBS-eons your videos bring my childhood dreams into reality

  • Perry Dowd
    Perry Dowd   2 months ago

    Once I loved And it was a gasSoon turned out...

  • MK B
    MK B   2 months ago

    "Like every other part of you, your heart is as complex as the story behind it. So the next time you give your heart away to someone, be sure that they know that your give is more than a half billion years in the making."Wow thanks

  • Robert Huston
    Robert Huston   3 months ago

    Nice. Very helpful. Thanks a zillion Universe.

  • Dalia Capellan
    Dalia Capellan   3 months ago

    Yes, but how do you fix it once it's been broken?

  • Yathish s
    Yathish s   3 months ago

    It is interesting to know that the same concepts (features) appears separately, multiple times... It's like life knows what's best for life to thrive.. and there is more than one way to do it....I would really like you to make a video of an overview of the evolutionary path.. the journey life took to get here...Like the different features that came and went and a few were useful so it stayed...It would actually turn out to be a story of life's features their birth, evolution, and extinction...

  • Joel Bernal
    Joel Bernal   4 months ago

    thanks for getting to the...heart of issue

  • Nikki Bishop
    Nikki Bishop   4 months ago

    I always want more about invertebrates (from any eon!)

  • Fadimations
    Fadimations   4 months ago

    What about your kidneys. You can give them to people and if you lose both or they break you can die

  • Songdao
    Songdao   4 months ago

    Can you please speak slower?

  • Emily Campbell
    Emily Campbell   4 months ago

    7:12 smth about the way that heart moves... mmmm papi

  • Nafeh Khan
    Nafeh Khan   4 months ago

    Why does he look CGI generated?

  • A5 x5
    A5 x5   5 months ago

    The Hart animation was nasty

  • CY Chow
    CY Chow   5 months ago

    Was learning about the circulatory system in biology this week, what a coincidence!

  • Someone that is lonely
    Someone that is lonely   5 months ago

    Different types of heart beatsSitting (Speed: 2)Laying down (Speed: 2)Walking (Speed: 5)Jogging (Speed: 7)Running (Speed: 13)Watching horror movie and then a jumpscare comes out (Speed: 13)Gaming and then being attacked (Speed 14)Gaming and you are at a very big and exposing place (Speed: 16)Gaming and there are 10 alive (Speed: 20)Gaming and there are 2 alive (Speed: 38)When the teacher uses the ruler/wooden stick and whips the table (Speed 69)Breakup (Speed: 80)WHEN YOUR CRUSH DOESN'T KNOW SHE IS TOUCHING YOU c: (Speed: BEYOND INFINITE)