The Animal That Wouldn't Die (w/Robert Krulwich) | SKUNK BEAR

[@seandmello3793]

Really liked the narrators way talking makes me want to hear him more

[@TimSheehan]

He (Robert Krulwich) is a regular host on NPR's RadioLab series, their podcasts are much like audio-only versions of this video so I'd highly recommend checking them out www.radiolab.org/series/podcasts/

[@MelaneyBAnatomy]

Radiolab is an amazing podcast, science made into relevant, engaging narratives!

[@rashminthaker3197]

@@TimSheehan .

[@Theadventurebox3]

Everything else: Eventually you must pass on The Hydra: I don't wanna

[@duolingo6702]

DeltaBravo lol

[@bannerbomb8693]

he was curious so he cut it in half XD

[@user-xk2st7fd1f]

1: this video was cute, relaxing and informative 2: marvel's hydra is scary so every time you said hydra I pictured Steve Rogers cutting the plants a million times over

[@Andrea-xs4ny]

There's a jellyfish that has been dubbed the only immortal creature (it can revert from sexually mature to sexually immature at any time, effectively resetting the clock each time, and it can do this forever and a day). Check out the Turritopsis dohrnii, aka the "Immortal Jellyfish" (more here: www.amnh.org/explore/news-blogs/on-exhibit-posts/the-immortal-jellyfish). I guess we've got another contender with the hydra.

[@headfangs]

So what I'm hearing is we should eat hydras and steal their powers.

[@sketchyspudley]

So what you're saying is we should do a Kirby.

[@hypnozpie4071]

wait if they don't die what happens if you eat them? do they multiply in your stomach? does the acid melt then kill them? i need to find out

[@charleystarks5972]

thicc glucose god they don’t die in their natural environment, take them out and they die

[@MrKittycattwenty]

@@hypnozpie4071 they can still die but they just don't die naturally, if you ate them they would die.

[@ameer.a_r]

Man you can not just eat them hydras has nematocyte that jellyfish has if you eat them they will just sting your mouth

[@iamfuturetrunks]

Hmm what iv gotten from this is... if I don't have kids ill never die. :D Sounds good! lol

[@egg-bert1735]

gg

[@piotrkowalski3869]

What the narrator said was that after having offspring living being dies faster. It means with no offspring you will live longer nad will have noone to pass your illogical theories onto.

[@Naked_Snake]

Love your voice. It's presented so soothingly :)

[@NOSfusion]

Hail Hydra!

[@AveryDelMiller]

Hydras are so cool, and they're all over the place. Great video 👌

[@Marleigh24]

k its been 5 yrs how r they now?

[@teacher.claire]

I love this channel!! Thank you to all those who have come together to produce these vids :)

[@Kuraakka]

this is one of those videos you just want to share to every one so i did

[@benracer]

When I saw the channel name, I thought it was some non-npr channel but then I saw Robert Krulwick's name. So I'm glad I found this.

[@-_o_o_-]

What about mutations?

[@Koppelya]

excelente, gracias por hacer estos vídeos!!

[@mianruwu3280]

so if we eat it, if they still alive in our bodies?...

[@birdies417]

Is the link between reproduction and life expectancy also observed within a species or only between species?

[@radhamadhabpathi512]

It would be great if you can post the link of the published paper in the description.

[@JetSetDiva]

Hi. Forgive the question if this has already been asked, but what software was used to make this video? I'm making a documentary and would love to have animation like this for some scenes. Thanks! Oh, and you gained a sub! :)

[@skunkbear]

I animated this video in Adobe After Effects using watercolor illustrations.

[@JetSetDiva]

Wow. That is impressive! That must have taken you quite some time. Thanks for the quick reply.

[@DerangedOctopus]

What is the song that begins at 0:34???

[@skunkbear]

That's The Sorcerer's Apprentice by Paul Dukas

[@DerangedOctopus]

Thanks a lot!!!

[@JinKee]

We were looking at the wrong biological unit for human immortality: you know what clump of human cells can be split in half, and becomes two of itself and continually replaces old cells with new ones? A human nation.

[@user-vc8yx2hm9r]

What happens if we eat the hydra?

[@andrevu3996]

One question.. Is this the same guy from the podcast freakanomics

[@darthvader6533]

"Hmmm, what an interesting creature, what should I do with them? Oh I dont know... *HOW BOUT CUT EM IN HALF!*

[@Aerba54]

I wonder if there are ways to integrate these immortal's cells with dead cells in humans.

[@StaryEyesxxx]

Where did you find the study relating maternal age and life span? I have been trying to find it (or something similar) in multiple places but with no luck. Is there any chance you still remember the researchers? I know this is a long shot but all help is really appreciated. Thank you.

[@itzel6698]

did you ever find the study?

[@kwarrior2895]

Wow just found this accidently.This is amazing!

[@kitteav]

If the cells are recycled ever 20 days, ish, can we really call it the same animal after 20 days? if 0 part of the original animal is there, is it still the same animal?

[@skunkbear]

You're in good company asking that question, because Plato, Thomas Hobbes and John Locke had a similar one (en.wikipedia.org/wiki/Ship_of_Theseus). Taking this further - YOUR cells are mostly recycled over time (even your neuronal connections are constantly reshaped kzbin.info/www/bejne/hKjJmGRrbM2YoK8) ... do you remain the same person? I think some would argue that because today's hydra is genetically identical to the hydra from 4 or 8 years ago (barring an occasional mutation) it IS the same.

[@KineticPassion]

calling it a different animal would also make it fit the curve. babies in 2 days, death in 20.

[@fockyoumang]

But is that still the same hydra he took out of the pond after having every cell replaced? Is that really immortal? They aren't the same ones he originally had when he started his experiment

[@JOblyJoobly]

i don't know if you know or not but you just made a HUGE doctor who reference

[@fockyoumang]

The Spectator I had no idea. That seriously was the first thought that popped into my head after watching this. Same goes for the human body, all skin and nails and bones die and get replaced till it can no longer make efficient cells and the dying process begins. The body we had as infants to toddlers all the way up to 80 years if your lucky, are not the same and brain cells die and don't get replaced. All life's experiences change you constantly, so are we the us we still the same person when we die? That's was my initial thought which made me think of that to ask that question about them because it's a so much more easy example to use

[@jonkirby6327]

People regenerate cells, are they the same person once all cells have been regenerated? Or is it some other person?

[@yakojjy]

***** Skin cells live about two or three weeks. Colon cells have it rough: They die off after about four days. Sperm cells have a life span of only about three days, while brain cells typically last an entire lifetime This stuff is pretty cool, and kind of related to to the anti cancer properties of weed. They're recently discovered that THC makes your cells die and recycle themselves faster, with shorter cell life, the chances of a cell developing a cancerous mutation are lowered. On another note, you are not a single entity, in fact most of the cells in your body aren't even human cells

[@kurtcobain6886]

Wilbur Jenkins Oh cells recycle about every 8-10 years depending on your size its really quite amazing this is why I love science

[@davidjames666]

Can i eat hydra?

[@MrShinta786]

we want more

[@reddsophia8100]

RADIOLAB!! Can we just get Robert Krowlich and Morgan Freeman to narrate everything please?

[@joshuarosen6242]

I am scientifically literate and normally don't learn a great deal from popular science videos, even if they are interesting. This video, on the other hand, was both interesting and informative. Hydras are clearly jolly interesting little chaps.

[@ericafleming5197]

Don't all animals do this in some way? They difference is that the stem cells that produce new cells become less efficient and die off, while in a hydra the stem cells don't age?

[@eurenton99]

But how many times can it's own DNA be split in half before there are problems?

[@joshuarosen6242]

I think you need to read up on cell divison. DNA isn't "split in half" during cell division, it is copied. It is not the case that, when a cell splits, each new cell gets half the DNA. The copying of DNA does inevitably result in errors and mutations on occasions but that's how we arrived on the scene. Such mutations wouldn't necessarily cause a problem and may even lead to increased fitness.

[@IIGrayfoxII]

Joshua Rosen These errors have ways of correcting themselves in animals. A terminate command is sent to the cell with bad DNA and it should die, but if it doesn't get terminated cancer happens

[@joshuarosen6242]

IIGrayfoxII That is indeed true. Although errors occur, it is far from a bad thing. It it weren't for such mutations, we'd all still be bacteria or worse.

[@rpm2004]

IIGrayfoxII He was referring (I think) to mutations in the games (sperm and egg cells) that cause random mutations between generations that may help or hinder the individuals' survival, which in turn acts upon the evolution of said species.

[@r3n736]

he was curious so he cut it in half, wonder what he would do to people he was curious about...

[@sanicthehedgehog1260]

I wonder why they're like this, it reminds me of the jellyfish. It's sad we're very underdeveloped in comparison or very flawed in design.

[@Zincink]

I enjoyed this - thanks :)

[@ellifedash663]

Where do I get a hydra?

[@noldyn8930]

Music? It sounds really relaxing (my opinion I always liked melody music)

[@duolingo6702]

Why does everything else get to die but not the hydra?!?

[@cworks1245]

What would happen if u dipped the in acid

[@harsharya545]

But I have heard every cell in human body also replaces itself every 7 year. (Source Vsauce)

[@JacksonHollo]

Wow... this is a good video

[@currysues]

So, if hydra never die, and hydra also reproduce, why aren't we up to our eyeballs in hydra?

[@skunkbear]

scurry_away Hydra can die if they are eaten, or if they starve, or if they are taken out of water -- the idea is they won't die of old age.

[@blackdraco28]

it's elf immortality old man time can't touch them a sword can

[@Elluem]

blackdraco28 I love how you call it "elf immortality" brilliant.

[@bellacutie25]

They are their own babies...

[@jimweaver3315]

Hmm, so if somehow you get us to do the same with our cells we could also be immortal. Something to think about.

[@jorgemtzb9359]

Yes, but the problem is that our cells are really specialized. A cell specialized in something can't reproduce and it's offspring would go to make a different function .

[@ИльяМаковоз-ж8л]

vox recommended you. u r really interesting and fascinating thx

[@helema23]

look up the squishy bear they can survive drought and extreme freezing along with several other things. they are tiny little animals with a simple cell structure bu tthey can survive conditions that would kill us.

[@makaronishenouda6413]

seems the channel wasn't immortal

[@4tumuch135]

Maybe we can make regenarative medicin out of these things

[@crazyburkey3677]

Would we increase our lifespan if we'd start ingesting hydras,

[@jameslee1145]

Hey, I'm from Long Island too!

[@Rytonic69]

Oh this is cool. DECAPITATIOOOOON!!!

[@Zappyguy111]

I had aptasia once, and injected them with vinegar....

[@tenletters5889]

2:10 so you're saying the key to living long lives is to gradually raise the age of consent

[@xboxonegaming3602]

Now if only humans could do this

[@Fahrenheit4051]

Some people think we might within this century. I'm a bit skeptical, but I definitely thing we should strive for it. The critics would say that it would offset the birth-death balance, but researchers are developing methods of long-term, reversible birth control that could help maintain this balance.

[@KanyeTroll]

does it have a brain? or at least a nervous system?

[@GandalfTheTsaagan]

Apparently it's a web of nerves arround the body: www.google.ie/imgres?imgurl=https%3A%2F%2Fmedia1.britannica.com%2Feb-media%2F35%2F73335-004-2425FA69.jpg&imgrefurl=https%3A%2F%2Fwww.britannica.com%2Fscience%2Fnervous-system%2Fimages-videos&docid=rDkP2CXLKxKsOM&tbnid=43Rz9z14K96HJM%3A&vet=1&w=358&h=260&bih=638&biw=1366&ved=0ahUKEwiAt_figdTQAhUmJMAKHQo5CLkQMwg-KBcwFw&iact=mrc&uact=8

[@scarves4evanoregano]

this made me emotional... NOTCOOLBRO! xD

[@shadowdance4666]

Immortality ?

[@ewmcd]

and might I add.... HAIL HYDRA!!!

[@chrisirwin34]

I can't like this more than one time! NO!!!!

[@avalasialove]

?

[@The900428]

isn't that a plant?

[@skunkbear]

It looks a bit like a plant, but it's actually an animal! It's motile, it kills prey with poisonous tentacles and it ingests them, and of course it has animal cells.

[@OlleLindestad]

It belongs to the animal group known as cnidarians - same as corals, anemones and jellyfish.

[@azitadgreat7412]

Hydras is just a Myth...

[@azitadgreat7412]

It FREAKIN Exist ?! Thanks for the info...

[@bjnslc]

How many cells do you need to replace before you consider yourself a different person? askanaturalist.com/do-we-replace-our-cells-every-7-or-10-years/

[@generaltso656]

Why could human just evole from them?

[@aquadragondavanin6745]

+Che Phillips we didn't

[@user-bo1bp1jz5i]

How did i get here

[@shoyuramenoff]

Hail Hydra! Anybody.....?

[@rulofmg]

but can it melt steel beams?

[@Talltrees84]

Send in Nick Fury and the Avengers. Then watch them die. Lol. Good vid.

[@lordbaba9649]

Im getting educated like a mothafucka

[@ItsRiskyyTTV]

Call it piccolo lol

[@reneebaran616]

What is the animal that lives the longest (or forever)🙂🤩🤪🐻🦄please like I’m going to guess it is from the sea maybe a jellyfish yeah I think they might live forever

[@MSPula]

Cut off one head...two more shall take its place... *HAIL HYDRA*

[@Kaioshin9000]

Hail hydra

[@ktktktktktktkt]

Hail Hydra

[@FrolkaScience]

gretings from Russia

[@Huntress_Hannah]

Can you imagine you’re in the middle of making love and he goes “WAIT!......gotta make sure my babies are ok first”

[@reginafelli9146]

Iioooo besteira

[@shiro4370]

*HAIL HYDRA*

[@Iohannes_the_Orthodox]

The man who wouldn't die :- Rasputin

[@Regnberg]

Hail Hydra!

[@chiqui1006]

Hail Hydra!