Where Did Viruses Come From?
Where Did Viruses Come From

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Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateEONS Try CuriosityStream today: http://curiositystream.com/eons There are fossils of viruses, of sorts, preserved in the DNA of the hosts that they’ve infected. Including you. This molecular fossil trail can help us understand where viruses came from, how they evolved and it can even help us tackle the biggest question of all: Are viruses alive? Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios Want to follow Eons elsewhere on the internet? Facebook - https://www.facebook.com/eonsshow Twitter - https://twitter.com/eonsshow Instagram - https://www.instagram.com/eonsshow/ References: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3094976/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4609113/ https://www.ncbi.nlm.nih.gov/pubmed/19270719/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4096385/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3758182/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3190193/ https://hal.archives-ouvertes.fr/hal-00679842/document http://bioinformatics.cvr.ac.uk/paleovirology/site/html/posts/2013-04-15_what_is_paleovirology.html http://www.sciencemag.org/news/2017/04/giant-viruses-found-austrian-sewage-fuel-debate-over-potential-fourth-domain-life https://www.khanacademy.org/test-prep/mcat/cells/viruses/a/are-viruses-dead-or-alive https://serc.carleton.edu/microbelife/yellowstone/viruslive.html https://www.nature.com/scitable/topicpage/the-origins-of-viruses-14398218# https://www.nature.com/scitable/topicpage/discovery-of-the-giant-mimivirus-14402410 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2976387/ https://www.nature.com/news/giant-viruses-open-pandora-s-box-1.13410 https://www.ncbi.nlm.nih.gov/pubmed/19561090 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2946954/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2906475/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3179036/ https://www.theatlantic.com/science/archive/2018/05/a-7000-year-old-virus-sequenced-from-a-neolithic-mans-tooth/559862/ http://www.uniprot.org/uniprot/Q9P2P1 http://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1001191


ф ьепп ф : white blood cells be like: 😡

Harry Shepherd : Whoever writes this show deserves a raise.

some dumb kid : I like this guy, he's so entertaining and doesn't waste time, plus talks with this sort of humour. I don't know what to call it. But it makes me smile.

Autismic Apple : Bacteriophages be like: 😏😏

hahalord : I'm currently studying viruses in my school, and youtube decided to recommend me this vid. How?

Marc Belisle : Could you do an episode on how language and communication evolved from pre-homo sapien species?

Asdfghjkl : They have been causing me suffering for the past 4 days.

Varad Mahashabde : Why isn't this trending? This is VIRAL

Martin Lukáč : My virology professor actually told me that the protein syncitin is of viral origin is now a part of the mammalian placenta. I think that's pretty cool!

2bornot2b : Long story short:Viruses came from the darkest pits of Hell just to give you a cold and ruin your day

Michael Atcheson : I wish I lived in the Cenazoic era, when John Cena ruled the Galaxy with an iron fist, and brought peace, prosperity and mid-level budget Hollywood blockbusters to all the people.

nosuchthing8 : Great host for this viral topic

Acsabi44 : Hey! I'm a molecular biologist, my field of expertise being early evolution and synthetic DNA constructs. Just wanted to say that I'm glad to see you did your homework well and explained all the more important aspects and theories behind viral evolution, and in an easy-to-understand way too. I myself believe the emergent complexity theory is right, maybe because I used to do a lot of research on really simple insertion elements (very basic DNA sequences that emerge in bacterial genomes and can jump around in DNA). and the way they enable more complex DNA constructs to evolve. As to wether viri are alive - Tough question. On one hand they lack a lot of key features that we define as life. On the other hand, they show behavior associated with advanced life, such as assessing their enviroment and making decisions based on their conditions. Anyway, congrats to your video, it was a treat to watch!

zoe daemon : Plot twist : virus helping evolve modern human 🤒

Verenas Games : PBS being relevant again man, maddddd respect

GADGET CENTRAL : Could viruses be a software update for our genes ?

Charlie Talks : It's not a symbiotic relationship if it causes harm to the host.

DontHatemusiK : "over time the relationship became more parasitic... Which sometimes happens......" *like*

Top5 Lists : our genes are 8% virus?? No wonder we're like one to this planet...

Joscha Finger : About the various pathways of virus evolution: I think perhaps all of them are correct, and it's rather a question of, "where does THIS virus come from? Like, viruses have evolved many times over, from different bases. If "virus" is not a phylum but a niche, just like "flying animal", or "plant-eating organism", that would make a lot of sense, I think.

Andrew Marian : I like talking floating man. Talking floating man is funny

Yung Mizzle : These comments just remind me of how much we DONT know about life

Enishidono : My god... I'm 8% virus! No wonder humans are like a virus ;)

butt dickenz : No ofcourse life doesn't make energy for itsself, every living thing uses an outside source as an energy source, yes even plants require energy from the sun to create the chemicals which it needs to keep living. No life form is self sustaining.

MyEternalTrance : Youtube recommendation on viruses... Starts spraying room with detol

FooDFam : "Viruses aren't alive" *5 secs later* "Viruses need a host to survive"

Jim Harris : I'm convinced that viruses are partial drivers of evolution, as in they transport and/or splice into sections of DNA and generate mutations. Changes over time through descent just seem too slow for the amount of diversity we see around us.

James Farrell : 1,500,0000 million views. Fantastic Great channel 👍 I love it 😍 Thank you for all of your hard work putting together this series. Keep up the great work you are doing. Greetings from Atlantic City New Jersey USA

Eli-akad : I always use to think about the fact that viruses are considered non living things, and it perplexed me. How can something that has intent as well as the ability to “reproduce” not be considered living? Whether it’s sentient is a whole other argument, but the way viruses behave leds one to believe that these things are living organisms. This always perplexed me when I was younger

w23857980 : Without out Viruses, there would be no evolution.

yeah oh : Are viruses alive? "Well yes, but actually no".

Alexander Wande : I doesn't matter if viruses are considered alive or not, it's just a wordplay, which should worry only the scientific community. Their properties are somewhat known, that's what important. Being called "alive" doesn't bring anything to the table.

Jason Davis : Great stuff on this channel.

Danilo Margarido : I'd say retroviruses are older than regular DNA-based viruses. This would be in line with the RNA world hypothesis.

Ganaram Inukshuk : "If viruses are on the tree of life, they're more like vines wrapping around it." Well, that's a really interesting way to put it.

Sandy J Renfroe : You had to issue the challenge: Let's all hope this episode goes viral! I couldn't resist.

William Farrell : I learned something great today, thank you

Shawn Michael : I never get a flu shot, and I never get the flu.

Digitaldigdug : Because a virus requires a host to live it is therefore not recognized as alive.

john hanrahan : Great video. I hope you do a video on Prions. While there are many out there, I enjoy the way you present information. Seems easier for me to absorb it.

TerrariaMLGplayer : Oh my god, we're part virus! *give me some suit i'm virus-man now*

Philby Tan : Im gonna say it..... This Is Going VIRAL

Jon Mendez : Obviously they are not inanimate, dead, material. If the definition of life included a tendency or regular inclination to successfully reproduce, then viruses are living things. Humans don't have a right to draw a line in the definition of what life is.

Josh M : I simply love this channel Eons has filled a niche in youtube for me 😂😂🤘💕 #Uguysrock

Kaunish Roy : beautiful,awesome and to be honest scared me a little. Do a episode how the non-avian dinosaurs like argentinosaurus or brachiosaurus become so big instead of gravity.

Ania Fiecek : It kills and balances life, like all things should be. Now you know where it came from.

Mammoth Tea : Thanks, I asked this in the comment section a while ago ... and now I finally have my answer :)

Cities & Skyscrapers : This is one of the best channels on YouTube! Always happy when a new video from it appears in my recommendations😊

Matt Leese : Besides all the interesting stuff that was explained in this video, I also learned that there is apparently a part of a mimivirus called a "stargate" 5:44