How Sloths Went From the Seas to the Trees

Рет қаралды 3,444,139

5 жыл бұрын

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The story of sloths is one of astounding ecological variability, with some foraging in the seas, others living underground, and others still hiding from predators in towering cliffs. So why are their only living relatives in the trees?
Thanks to Ceri Thomas for allowing us to use few sloth reconstructions! Check out more of Ceri's paleoart at / alphynix and nixillustration.com
And thanks as always to Franz Anthony and everyone at 252mya.com for their great paleoart.
Produced for PBS Digital Studios.
Super special thanks to the following Patreon patrons for helping make Eons possible:
Katie Fichtner, Aldo Espinosa Zúñiga, Anthony Callaghan, Esmeralda Rupp-Spangle, Gregory Donovan, Ehit Dinesh Agarwal, الخليفي سلطان, Gabriel Cortez, Marcus Lejon, Anel Salas, Robert Arévalo, Robert Hill, Kelby Reid, Todd Dittman, Betsy Radley, PS, Colin Sylvester, Philip Slingerland, John Vanek, Jose Garcia, Noah offitzer, 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, Sapjes, Daisuke Goto, Hubert Rady, Yuntao Zhou, Gregory Kintz, Tyson Cleary, Chandler Bass, Maly Lor, Joao Ascensao, Tsee Lee, Sarah Fritts, Ruben Winter, Ron Harvey Jr, Jacob Gerke, Alex Yan
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References:
link.springer.com/article/10....
www.tandfonline.com/doi/abs/1...
www.pnas.org/content/102/33/11763
www.cambridge.org/core/journa...
www.jstor.org/stable/2400207
onlinelibrary.wiley.com/doi/a...
www.tandfonline.com/doi/abs/1...
palaeo-electronica.org/2009_3...
link.springer.com/article/10....
eurekamag.com/research/020/40...
www.tandfonline.com/doi/abs/1...
link.springer.com/article/10....
link.springer.com/article/10....
link.springer.com/article/10....
www.ncbi.nlm.nih.gov/pmc/arti...
www.bioone.org/doi/abs/10.1671...
academic.oup.com/zoolinnean/a...
link.springer.com/article/10....
www.ncbi.nlm.nih.gov/pubmed/2...
peerj.com/articles/5600/
www.tandfonline.com/doi/abs/1...
www.researchgate.net/publicat...

Пікірлер: 2 000

@tatsugiri1 4 жыл бұрын

to show my respect for the sloths, I played this video in 0.25x

@friendofbeaver6636 3 жыл бұрын

Respect to you Kyon Kyon! Busted out laughing!

@thenerdbeast7375 3 жыл бұрын

If you want to watch it the way the a sloth would perceive it, watch at 2x speed

@epauletshark3793 3 жыл бұрын

How drunk did hank sound?

@friendofbeaver6636 3 жыл бұрын

@@epauletshark3793 I would call it "Barney Gumble" drunk, only drunker. Give it a try.

@lumber9016 3 жыл бұрын

Respecc

@user-mp1is6ys7m 4 жыл бұрын

Sloths know they're old "we've done everything, let's just not anymore"

@iskkudcjr1126 4 жыл бұрын

Lava: WHOMST HAS SOMOND ME

@Seismitoad3 3 жыл бұрын

@@iskkudcjr1126 *summoned, also wth do you mean?

@JayWkingdomskrumble 3 жыл бұрын

@@Seismitoad3 Sloths..Lava.. doesn't end well for sloths i'm guessing. Just my 2 cents.

@aleckazamproductions8139 3 жыл бұрын

@@Seismitoad3 it's internet cute speak people do to mimic animals. Chill out

@jekella.3970 16 күн бұрын

"there's nothing we can do"

@LexIconLS 5 жыл бұрын

Anyone else want to see an Eons style, full-length documentary about literally anything? Take my money.

@anieanton7266 4 жыл бұрын

Michael Erler YES!!

@carriemooney7215 4 жыл бұрын

Yes!!

@hankiedave 4 жыл бұрын

HELL YE

@johnsilver8480 4 жыл бұрын

Dito

@cailit4132 4 жыл бұрын

Check out its ok to be smart

@aitchpea6011 5 жыл бұрын

Fish: Evolve in the sea. Also fish: Hey, let's go live on the land. Mammals: Evolve on land. Also mammals: Hey, let's go live in the sea. Sloths: I don't like it here. Going back to the land. Later, whales! Also sloths: Hmm, this is boring to look at. I wonder if it would look better upside down?

@jedidr4918 4 жыл бұрын

Aitch Pea HOW DOES THIS NOT HAVE MORE LIKES?!

@axelblaze6950 4 жыл бұрын

🤣🤣

@shawndavis1480 4 жыл бұрын

Tardigrades: Mmm, I'm going to space. See ya!

@disgusted2704 3 жыл бұрын

@@shawndavis1480 Tardigrades: Going to the depths of hell. Heard it's warm there.

@mayscasitoro163 3 жыл бұрын

@@shawndavis1480 Xd

@davidabonyi4556 5 жыл бұрын

"Metabolically challenged" is my new favourite insult.

@mho... 5 жыл бұрын

making fun of sloth's truly is a slow burn!

@vvvvvv66666 5 жыл бұрын

Metabolically

@mmseng2 5 жыл бұрын

I'm hypothyroidic and I won't stand for you insulting my sloth brethren. But I will hang around for it.

@ksoundkaiju9256 5 жыл бұрын

A new word to offend SJWs

@maan7715 5 жыл бұрын

My other favourite on these channels was the "Metrically challenged" :D

@Googledeservestodie 5 жыл бұрын

The moral of the tree sloth is: slow and steady wins the race but also grows a lot of moss and can get eaten while taking a long poop

@diegodeluquev1433 5 жыл бұрын

Don't forget they starve to death even when they have a full stomach

@jimmij3894 5 жыл бұрын

How?

@gojiratheking1065 5 жыл бұрын

@@jimmij3894 Their methabolism is THAT slow

@enkiimuto1041 5 жыл бұрын

The poop burying thing is weird to me. Like, how many animals can smell the poop and climb up the three to get them if they're mostly safe there?

@Dodoraptor4 5 жыл бұрын

Enkii Muto it’s not the smell, it’s the sound. Imagining a predator walking in the Amazon and then hearing the sound of poop hitting the ground...

@thecatinthebag9522 4 жыл бұрын

He prottecc He attacc But most importantly He went from the seas to the trees for additional snacc

@theloffikilli4794 4 жыл бұрын

Noice

@TEACHurNOOB 4 жыл бұрын

beautiful.

@chicowhite6956 4 жыл бұрын

Goodjob

@brighid9527 4 жыл бұрын

His teeth grow bacc

@IdiotWithEducation 3 жыл бұрын

Noice

@oswelt8642 5 жыл бұрын

Metabolic challenge ✔️ Slow movement ✔️ Sleeps majority of its life ✔️ Eats anything that is edible ✔️ I guess i found my ancestors

@DerpfishsaysNO 5 жыл бұрын

I'm really curious about the evolutionary history of bats. It's been on my mind the past couple weeks, and I'd love to see you guys break it down

@Alex-kp5pq 5 жыл бұрын

The question of where bats split off has driven biologists batshit crazy. That pun was guano. But yeah, some people group them with the primatomorpha on the basis of morphology, others in a clade called "pegasoferae," which actually places them as sister taxa to the ungulates, of all things, on the basis of the molecular clock. There's a reasonably sized fossil record- and we know some interesting things, like how echolocation actually appeared twice- but no one's sure where it actually, well, started. So it's a mess. Until someone finds a transitional bat fossil from the paleocene or eocene, it'll probably stay that way.

@Davesothoth 5 жыл бұрын

We don't really know enough about them. We've never found a transitional bat fossil. Even the earliest known bat fossils could fly.

@FoiledFeline 5 жыл бұрын

@jamessullivan1227 5 жыл бұрын

Agreed!! Great video idea!

@averyniceperson8319 5 жыл бұрын

@@renatoe9648 ml

@blobbertmcblob4888 4 жыл бұрын

Giant sloth: I am gonna dig myself a home! =D *14 years later* I'm finally done. Time to die!

@sydneyatkins6249 3 жыл бұрын

@@semyonchernykh4694 oof

@Tiger89Lilly 3 жыл бұрын

@@semyonchernykh4694 14 year mortgage? You lucky bastard

@dafyddil 3 жыл бұрын

r/accidentalbladerunner

@Fpl8646 3 жыл бұрын

Sounds like a human

@aquaaria3489 4 жыл бұрын

"How Sloths Went From the Seas to the Trees" Me: *and now to the streets*

@blob2557 4 жыл бұрын

*and then in the sheets ( ͡° ͜ʖ ͡°)*

@Damond_Warrior 3 жыл бұрын

Krokeiri and then to the internet

@Brakvash 3 жыл бұрын

... and down the Port-A-Potty's.

@sweetsarein4904 3 жыл бұрын

Why did i laugh so hard

@eleyas9266 3 жыл бұрын

@@blob2557 yo wtf 😂😂😂😂😂

@ecophreak1 5 жыл бұрын

Every time I watch these videos I'm always slightly sad that I will never be able to see the strange ancestors of these creatures in person

@generalleenknassknotretire9180 5 жыл бұрын

*"THE ATLANTIS SEA SLOTHS"* Probably the best team of their day.

@aleksandarvil5718 5 жыл бұрын

@General Lee N Knass /knot retired/ *"THE PACIFIC MARINE SLOTHS"* *

@EpiphanyDraws 5 жыл бұрын

who needs clickbait-y titles when you can just tell the truth

@SteviiLove 5 жыл бұрын

4:42; the sea sloth Thalassochus Now, how was the title click bait?

@fabianjackson6977 5 жыл бұрын

@@SteviiLove whoosh

@Games_and_Music 5 жыл бұрын

@@SteviiLove i think you're both on the same side, but you took Paige's post as an attack on the video, which i don't think it was.

@EpiphanyDraws 5 жыл бұрын

@@SteviiLove i meant that the truth was cool and weird enough that they didnt have to use clickbait. ya get me?

@sebastienvantiggele5182 5 жыл бұрын

@@fabianjackson6977 welp, apperently no whoosh as OP wasn't ironic

@easdasdas 4 жыл бұрын

Im from Patagonia and i have a petrified claw from one of this animals, found it with my dad near a shore!

@mewheni195 2 жыл бұрын

That's really cool

@vociferonheraldofthewinter2284 2 жыл бұрын

One of the biggest evolutionary lessons that I'm learning from watching all these paleontology videos is that bigger is far from better and that too much specialization will eventually mean extinction. I'm starting to think that the common house mouse and the rat will outlive us all.

@piercemccauley7079 Жыл бұрын

Well yeah that’s what lived after every extinction along with cockroaches and other small animals able to take a beating

@ginger-ale7818 Жыл бұрын

I don’t think there’s anything we can do to stop the mice and rats. That’s more or less what mammals have looked like surviving the last 3 extinctions

@Thanhatos 9 ай бұрын

That's basically what happened when the dinosaurs get wiped out. The little "mouse-like" mammals thrived and we are their descendants. Next extinction from a rock from space will do the same to us, and let our mouse and rats survive this "again".

@MeleeTiger 5 жыл бұрын

As fun as it is to learn about such amazing creatures and organisms, it always makes me a little sad to know they're gone... It is neat to see that those tunnels and such are still around even today, that's a hell of a footprint to leave.

@fhhfhdfdhhdhhdfhdf138 5 жыл бұрын

it's amazing that they existed in the first place; i wonder what their defense is? is it only their claws? predators had other priorities? out of reach/too high in the trees?

@brighterthansunshine4355 3 жыл бұрын

Well, as long as we remember them, they are never truly gone.

@aroace.mamabear 2 жыл бұрын

wish i could be that impactful

@Weirdisjustabrownandyellowword 7 ай бұрын

@@aroace.mamabearThink about the footprint humans will leave behind. Your house will be a much bigger archaeological discovery than a sloth cave one day.

@jaridkeen123 4 жыл бұрын

I would really like to see the ground digging sloth alive today.

@supercharged5-39 3 жыл бұрын

*A R E Y O U S U R E?*

@ignaciogimelli1613 3 жыл бұрын

@@supercharged5-39 yeah, they're harmless. Just big, hairy sloths digging literal caves

@pedrojioia 3 жыл бұрын

@@ignaciogimelli1613 I wouldnt mess with a sloth that makes that huge cave lol

@ignaciogimelli1613 3 жыл бұрын

@@pedrojioia but it would be cool to see them at a zoo or somethinf

@netflixuser2.092 3 жыл бұрын

@@ignaciogimelli1613 yep,they are so cool

@jegainjj.kpoparmy9285 4 жыл бұрын

I'm sorry I died when he said "metabolically challenged"

@jessical4866 5 жыл бұрын

Modern sloths can still swim! I don’t think that’s related to the ocean sloths, but the fact that even modern sloths are so adaptable is kind of mind blowing.

@Ragnarra 9 ай бұрын

Three toed sloths can but I don't think two toed sloths can.

@PaulPaulPaulson 5 жыл бұрын

I already learned something just from the title and thumbnail!

@lolikususs 5 жыл бұрын

me to :D

@darylgibbs8834 5 жыл бұрын

I love sloths one of my favorite animals slow and steady

@benbrown8682 5 жыл бұрын

Yea but the aquatic sloths arent the treetop sloths that we tiday its a kinda misleading title

@ballasack680 5 жыл бұрын

1: they used to live in seas 2: now they live in trees

@poixel813 5 жыл бұрын

same

@siobhanb.5112 4 жыл бұрын

My kiddo is researching sloths for school, and I came across your video. We loved it! He says, "I love the art, the photos, and videos. Thank you!!!

@nine300 5 жыл бұрын

"Their combination of a low-energy diet and suspensorial lifestyle helped protect them from all these threats" I guess you could say they *hung in there*

@ToddWrightthedrummer 5 жыл бұрын

"Slowths." - Sir David Attenborough

@challalla 5 жыл бұрын

That's the normal British pronunciation

@Del11k 4 жыл бұрын

It's also the same as when he says nich/nichs,when it is niche/niches and alge,when it is algae.

@firstnamelastname-uw6vq 3 жыл бұрын

Sounds like he says Slavs not sloths.

@cookeymonster83 3 жыл бұрын

That's how it's meant to be pronounced. "Sloth" is a deadly sin, not a tree hanging mammal

@Shovelglove545 3 жыл бұрын

@@challalla no it isn’t lmao

@sohopedeco 5 жыл бұрын

I think sloths were the first animal on this show who didn't evolve in completely unpredictable continents. Maybe they're still trying to leave South America.

@unicornswag888 5 жыл бұрын

These tree bois need some pre-workout to really get them going.

@svennoren9047 4 жыл бұрын

10:15 talks about an ice age, shows a picture of Scandinavia. Thanks, I guess...

@artemkras 5 жыл бұрын

A sloth's bones were found in a cave 300 meters up a cliff. What surprises me, is that it did climb that cliff just before it died

@latioswarshowdown1202 4 жыл бұрын

Too much energy

@BG-te2se 3 жыл бұрын

The big flood

@GreatWhite00000 3 жыл бұрын

Probably was it's home. The sloth may have dwindled there for days.

@Aipe97 5 жыл бұрын

Sea Sloths are my new favorite prehistoric animal

@DragonFae16 5 жыл бұрын

Being an Australian, I want to learn about the megafauna that used to live here. The Thylacaleo fascinates me. Doing an episode just about them would be more than enough to make me very happy.

@AspireGMD Жыл бұрын

Well your wish has been granted multiple times throughout the years, they just dropped a vid on Thylacoleo 4 years later lol.

@DragonFae16 Жыл бұрын

@@AspireGMD Yeah, it kind of felt like I wished for one, and that wish got granted. I was very happy.

@Linfamy 5 жыл бұрын

3:13 gotta admit, took me a while to recognize what that was

@mayscasitoro163 3 жыл бұрын

Why?

@skrekibuzzaman7757 3 жыл бұрын

Yes the front leg was looking like a dog's head

@keyofallworlds7549 3 жыл бұрын

Omg I didn’t know you watched Eons!

@Linfamy 3 жыл бұрын

@@keyofallworlds7549 ;)

@mangoface7914 3 жыл бұрын

@@keyofallworlds7549 subscribing to them now thanks

@anon0002929292 5 жыл бұрын

Omg I watch Crash Course and PBS Eons all the time and when this came up in my playlist I was like "wait a minute... something's amiss" for like 5 minutes until I looked at the video and realized Hank was hosting this. I hope he comes back for more!! Love this guy.

@ivanlima8970 5 жыл бұрын

I like to see an overview of how could it be the normal daily routine of a tribe of humans when the megafauna was around

@GRosa 5 жыл бұрын

@Hræð Framhliðinni it's amazing that back then they already used cutlery 😎

@hiddeninplainsight9392 5 жыл бұрын

@Hræð Framhliðinni Why would humans avoid Megatherium? Megatherium was most likely on the menu.

@KhanMann66 5 жыл бұрын

Still not wise to run into one.

@AnaisAzuli 5 жыл бұрын

Good idea!

@LordofFullmetal 5 жыл бұрын

That first response actually captured it pretty well.

@turmunhkganba1705 5 жыл бұрын

Could you cover the evolution of blood, please? Btw The episodes just keep getting better and better

@williamchamberlain2263 5 жыл бұрын

Great idea

@NoctisIgnem 3 жыл бұрын

And it's done

@mangoface7914 3 жыл бұрын

THEY DID

@s3cr3t-wpn9 3 жыл бұрын

I love EON's short and direct documentary style.

@castlewhite1577 5 жыл бұрын

This is probably my favorite corporate KZfaq channel

@redheadedstepchild5432 3 жыл бұрын

Same

@WaspandUnicorn 5 жыл бұрын

Megalonyx means large claw in Greek! We have Kentucky Coffee bean trees here that are going extinct because there are no more ground sloths to poop out their seeds, which are toxic to pretty much every other animal. I've got a few seedlings I'm trying to grow, hopefully a few more this year too. Ok thanks for coming to my Ted talk!

@simonj3413 5 жыл бұрын

The lack of sloths to disperse them can’t be the only reason they’re dying out, if that was the case they’d have been gone long ago

@Toomuchbullshitt 5 жыл бұрын

The ground sloths also disperse seeds from ancient avocados in rainforest to Joshua tree seeds in the desert.

@williamchamberlain2263 5 жыл бұрын

Same for cassowary and some of the forest trees in Australia.

@Outlawzero 5 жыл бұрын

The dodo trees going the same way. Trees can live a long time. Avacado seeds are as big as they can be & still be able to pass through giant animal but holes. The reason they survived is being cultivated by ancient man.

@hillside21 Жыл бұрын

Thomas Jefferson gave the fossil sloth remains he saw _Megalonyx_ and told the Lewis & Clark Expedition to look for them still alive.

@lachlanchristie8733 5 жыл бұрын

I'd like to see an episode about the Burgess Shale deposit and how Charles Walcott misidentified so many of the species he found there, placing many in completely wrong phyla.

@onemadhungrynomad 4 жыл бұрын

"how sloths went from the seas to the trees" i bet they did it slowly.

@MrIcenice44 5 жыл бұрын

I absolutely love the music for the intros. It reminds me of being a kid in an aquarium or a new museum exhibit.

@redheadedstepchild5432 3 жыл бұрын

Me too this whole channel is like old school discovery channel

@TragoudistrosMPH 5 жыл бұрын

I would never have asked for sloths, but *wow* was this amazing! Thanks for this! I'd love to learn about Arctic species, and speculate over what fossils are likely under permafrost, please.

@lyreparadox 5 жыл бұрын

Or Antarctic species!

@LordofFullmetal 5 жыл бұрын

It's ok - at the current rate of climate change there won't BE any permafrost in a few years.

@hcesarcastro 5 жыл бұрын

Talking about suspensorial animals reminds me of the Quora question "Has an animal ever evolved to be less intelligent in order to survive?", whose highest voted answer indicated the koala as that animal, and one of the main arguments is that it has the smallest brain-to-body-size ratio of any mammal and also that it eats just eucalyptus, a leaf that in the long term wear out its teeth, leaving it to die by starvation.

@LordofFullmetal 5 жыл бұрын

Also pandas, who can eat pretty much anything and chose the ONE thing they can't metabolise properly as their main food source.

@iztaccihuatlromeroflores2264 5 жыл бұрын

@@LordofFullmetal ikr we might need to let them go extinct ;-; all the effort for pandas to stay alive when it could be going to others that would be able to actually sustain themselves with a little help

@dubbingsync 5 жыл бұрын

To me, pandas fit that idea. They’re a herbivore that evolved from a omnivore, with the skull and teeth of a carnivore... meaning it just cut off a huge portion of its diet, to eat something that doesn’t even give them that much energy. Which leads to the very slim mating time they have... to me Pandas are one of the worst modern species, as it feels like they haven’t finished evolving yet.

@timfrey2358 4 жыл бұрын

many pandas are in captivity, so I wonder why people don't attempt to control their diet by removing bamboo and trying to persuade them to eat different things, especially if you can start at birth of a captive panda I would think you can adapt it to eat more nutritious foods.. Do they flat out refuse to eat anything else even if you remove the food they usually eat?

@rato9131 4 жыл бұрын

@@dubbingsync I think pandas won't evolve. They can't hunt and can't eat anything.

@marikalayaedelos4790 5 жыл бұрын

I just have to say, one of my favorite things about Eons is how excited you guys get to talk about this stuff. I know you're not jumping around or anything, but you're not trying to feed us a documentary monotone either and that makes it really easy to pay more attention and actually get the most out of your videos.

@CC-TimesTwo 4 жыл бұрын

6:37 where the host mimics "furiously digging" 😆

@hauntedhatatefumo8699 5 жыл бұрын

Sid the sloth’s family tree.

@kennymacgregor 4 жыл бұрын

or rudys

@calvinlam7272 4 жыл бұрын

Reminded me of that part in Ice Age when Sid was looking at his primitive ancestors frozen in ice, in separate stages of evolution 🦥

@TheHeston83 3 жыл бұрын

Or Flash,Flash 100 Yard Dash

@Tigress28676 3 ай бұрын

Yup!

@Catobleppa 5 жыл бұрын

I misread the title as from the sea to the streets

@LadyTanyaNY 5 жыл бұрын

Lol!!! I love that! 😂

@jadelilly420 5 жыл бұрын

We in the streets too... #SlothLyfe

@williamj5463 5 жыл бұрын

Gangsta sloths have taken over

@therighteousmoose5036 4 жыл бұрын

It's hard out here for a Xenarthran.

@claudepatrickmillet1705 4 жыл бұрын

A hip-hop mermaid comedy

@jengb7057 3 жыл бұрын

Humans 10 Years later : How Sloth went from living in trees to flying in the sky with a giant wings and laser eyes

@lycanoregaming8443 3 жыл бұрын

Damn😂😂😂😂😂🤣🤣

@Jenny-tm3cm 2 жыл бұрын

I love this channel and Hank’s channel(s) independently and was super surprised to see him here! But also not that surprised lol

@simonj3413 5 жыл бұрын

My Requests: American lion American cheetah Short-faced bear The elephant family tree Giant beaver Evolution of rhinos Evolution of lemurs

@thegreatbutterfly 5 жыл бұрын

What, no glyptodonts?

@simonj3413 5 жыл бұрын

thegreatbutterfly I didn’t list them but sure, glyptodonts are cool

@manictiger 5 жыл бұрын

Here we see the American elephant in its natural habitat. It's 4am on Friday, after the great feast, and it's time for the elephants to find nesting materials. Here we see a regional plain, where we're sure to find many elephants stampeding for their nesting materials. This region is called Walmart, named after the pioneer of these regions, Sam Walton.

@coyotelong4349 5 жыл бұрын

Don’t forget cetaceans

@simonj3413 5 жыл бұрын

Kyle Sekenski yeah that’d be nice

@2lostbikes 5 жыл бұрын

I've now seen sloth videos from the BBC, TierZoo, and Eons. That's a trifecta right there. Attenborough called modern sloths mobile compost heaps. They only survive because they have certain bacteria in their stomach to break down the leaves they eat. I wonder if all the sloth ancestors were also mobile compost heaps.

@themonarch5688 4 жыл бұрын

Adrijana Radosevic yes but it’s not just regular digestion, you don’t see humans digesting those kinds of leaves, or even most other herbivores. It’s like digestion pumped up to 100

@foxylee 3 жыл бұрын

Celcius! I love whoever wrote this script. I also love Hank, of course.

@alicedixon6604 4 жыл бұрын

Sloths are my favourite animal! I was having a bad day but this video cheered me up. Thank you PBS Eons!

@lilitheden748 5 жыл бұрын

What great topic. I really didn’t know that sloths are such interesting animals. That’s what I like about this channel. The videos are made very professional, the topics are always interesting, it’s brought in such a way that anyone can understand it and I learn things that I would otherwise never have thought about.

@jonsnow1994 5 жыл бұрын

Seal evolution sounds really interesting.

@maxximumb 5 жыл бұрын

Hank, I'm still waiting for an episode that explains which critters left the oceans to become insects and how their wings formed.

@latronqui 3 жыл бұрын

I didn't think I could love them even more.

@felixsima 5 жыл бұрын

You shoud have more fans... You make greate videos

@natanoj16 5 жыл бұрын

They do have more fans ;) they are 5+ KZfaq channels plus his own personal channel

@LadyTanyaNY 5 жыл бұрын

Agreed! Btw, could you use both the metric system and the American system in your videos? I'm thinking that the reason you don't is because you/your channel wants to get Americans used to using the metric system, BUT I think it might make it even easier for Americans to adapt to the metric system if science videos used both. That way, we'd learn how to "translate" the American system into the metric system in our heads as we watch the videos. What do you think? I've seen it done on a few other science channels and I find it very useful.

@maan7715 5 жыл бұрын

@@LadyTanyaNY They did show the feet equivalent on the right bottom of the screen. Don't forget that the US is only 4 percent of the world population.

@dintonfreeman4176 5 жыл бұрын

@@maan7715 4% of the world population in just one single country, that's a fairly high number!

@YoFreshWiggy 5 жыл бұрын

@@LadyTanyaNY I've heard that in Austraila, they changed their Imperial (American) measurements to match the metric system. So... as you understand 3.78 liters equals a Gallon, but in Austraila, a Gallon is 4 liters. From there the rest seems predictable. A Yard is a meter, a Cup is a 1/4 liter, Pint is 1/2 liter, Quart is a liter, a Mile is 1.5 Kilometers, etc... They simplified the conversions, and the people were much more willing to accept the change.

@azdgariarada 5 жыл бұрын

"What do you want to learn about?" I want to learn about various methods for dating different paleontological finds. I believe there are certain limits for some methods, like carbon dating only works for 50-60k years or less. So what other ranges exist for various other methods used when dating multi-million year old fossils? I think an entire video explaining the in-depth fundamentals of dating methodology would be fascinating. How do we know what we know?

@AlexAzureOtaku 5 жыл бұрын

almost read that as 'various methods of dating different paleontologists'.

@azdgariarada 5 жыл бұрын

That would also be an interesting video?

@sexyluvre 5 жыл бұрын

"The Bachelor: Paleontology Edition".

@AlexAzureOtaku 5 жыл бұрын

@@sexyluvre 12/10 would watch.

@KhanMann66 5 жыл бұрын

Also the different times within the Periods and Epoc.

@tengkuamirultengkukudin7438 2 жыл бұрын

The best pbs eons Host ever, period!

@kittylovesfilms 5 жыл бұрын

I love ya Hank Green! Thanks for narrating this gem

@sterkar99 5 жыл бұрын

Now that you mention it, I do really wanna know how dogs turned into seals and stuff...

@imlonelypleasehelp5443 5 жыл бұрын

H Ĕ Ł P ? Bears did not dogs

@amedicabg 5 жыл бұрын

I'm lonely Please help Did you just assume their species?

@Alex-kp5pq 5 жыл бұрын

They were arctoids, not dogs.

@samuelsavary4895 5 жыл бұрын

Not exactly how evolution works haha

@ezioauditore7636 5 жыл бұрын

The evolution of sea doggos are still a mystery

@nicholasjoseph9062 5 жыл бұрын

How did the sloths dig the caves? Earth bending.....

@arceuslordofcreation8824 5 жыл бұрын

Those were the Bager-Moles

@freemanlowell5437 5 жыл бұрын

One of the best channels on youtube.

@FoiledFeline 5 жыл бұрын

I love how steve gets a more interesting thank you every time. You’re the best, steve, thanks for supporting a show I really love in a way I can’t exactly afford to do myself 👍

@mrmjdza 5 жыл бұрын

"Caves far above the ground" That's such a beautifully poetic, yet factual, juxtaposition :)

@MrPeach774 5 жыл бұрын

I think this was my comment that inspired this video! I asked on the last video about sloths and then here it is. Thank you so much! This was so cool to learn about and I can’t wait to see what you cover next! ❤️

@tovekauppi1616 3 жыл бұрын

This video about sloths came out just ten days after tierzoo’s video, meaning they were in production at the same time. They tackle the same subject but from very different directions and they draw very different conclusions. Both are a great watch though.

@mwolkove 2 жыл бұрын

Sloths always have the happiest look on their faces.

@GhazMazMSM 5 жыл бұрын

next do when dog and cats were one.

@milky_wayan 5 жыл бұрын

according to timetree.org (a website you may end up spending hours on if you're interested in this sort of thing) cats and dogs split about 54 million years ago.

@ScionStorm1 5 жыл бұрын

Milky Wayan but who served the divorce papers?

@emilandreasson9670 5 жыл бұрын

Yes

@christopherellis2663 5 жыл бұрын

@@ScionStorm1 Big Bird

@mattojeda1491 5 жыл бұрын

Nickelodeon covered that in the 90's.

@JoelFeila 5 жыл бұрын

how about an episode about how the placenta evolved

@coahomma6794 5 жыл бұрын

Good suggestion

@dylanvazquez9374 3 жыл бұрын

These videos are awesome for passing the time at work. Thank you for the content 🤘

@WireMosasaur 5 жыл бұрын

I'd love to see more plant stuff! I've seen a lot of videos in my time that detail the general progression of land plants to scaled plants to flowering plants and grasses etc., but something that focuses on one specifically interesting family like this video does for sloths would be really cool!

@jcortese3300 5 жыл бұрын

I would never have guessed that sloths would be so fascinating. Very fun!

@iainhansen1047 5 жыл бұрын

Sloths used to be overpowered before the devs nerfed them into useless slow tree climbers Watch tierzoo you’ll be pleasantly surprised

@monzo4489 5 жыл бұрын

My man

@clonecommanderrex8542 5 жыл бұрын

I already seen that video.

@iainhansen1047 5 жыл бұрын

good job caption. Now GET BACK TO SHOOTING CLANKERS!!!

@Infernoraptor 5 жыл бұрын

Tierzoo FTW!

@willscott174 5 жыл бұрын

your right its amazing

@SwedenTheHedgehog 3 жыл бұрын

While this is very interesting; I wanna correct a small mistake at 3:34 which states that "if you had a body temp at 35 degrees Celsius, you would be considered hypothermic". This isn't the case; the average body temperature of an adult is ca 37C, but people tend to vary within the range of 38 - 35,5 degrees. Other than that; great video :D

@AllCanadianReptileGirl 3 жыл бұрын

Great video. It's so fascinating seeing how these creatures got from what they were to what they are today. The gaps in the fossil record still leave great mysteries - there's so much left to learn!

@dashflores7118 5 жыл бұрын

Evolution of Elephants?

@drunkalfuzzyness 5 жыл бұрын

This was fascinating!! I saw a website once which showed the evolution of the Wales and Dolphins, I'd love to see a video about that. And also a video about lions/cat family tree.

@robscouto 5 жыл бұрын

They have a video on whales, if I am not wrong. It is called "when whales walked"

@drunkalfuzzyness 5 жыл бұрын

@@robscouto ahh, good to know cheers!! ✌️

@wrybreadspread 5 жыл бұрын

Modern sloths seem rather inglorious compared to their predecessors. In the Disney movie Zootopia, they got relegated to the Department of Motor Vehicles, which is notorious for slow service

@alecjacobsen7496 3 жыл бұрын

I once again remember just how much I love megasloths.

@redheadedstepchild5432 3 жыл бұрын

Not to brag but I never forgot

@NilayP17 5 жыл бұрын

Your videos are just the best dose of prehistory! Been following for ages, never disappointed.

@A_VeryIdea 5 жыл бұрын

If I were allowed to name a sloth, anteater or armadillo, I'd name it Frank Xenarthra

@tec-jones5445 5 жыл бұрын

That's genius XD

@franzforkel7753 5 жыл бұрын

*No pun intended

@Leotique 5 жыл бұрын

thats the name of Frank (Flash) the Sloth in Zoomania

@scienceexplains302 5 жыл бұрын

A sloth is animal that crawls in the trees It never runs or pants or bends its knees It’s slow and lazy and has algae fur If it tried to speak it could only slur So if your energy’s at a loss You might grow up to be a sloth Did you ever swing on a star...

@sebastianalancliffordthomp4114 5 жыл бұрын

Third time Lucky In the UK it’s called Zootropolis XD

@foolslayer9416 5 жыл бұрын

I hope you do some videos on creatures of the Miocene Epoch. The predators of that time were badass!

@hannahsenders6462 4 жыл бұрын

I wish me mentioned that sloths can still swim. I don’t remember which one, but they will cross the ocean between islands to find a mate. They’re actually decent swimmers. It just would have been a cool note, love the video though!

@JustAnotherRandomGuy-_- 5 жыл бұрын

Is that you Sid?

@killjoy1523 5 жыл бұрын

No this is patrick

@karthikeswara8441 5 жыл бұрын

Hank makes things so interesting!

@jonashaxen2087 5 жыл бұрын

Great video as always Eons, thanks. Didn't know sloths were so adaptable.

@_Katzenberg 5 жыл бұрын

Who guessed that sloth history would be so interesting? Anyway, I would like to learn about Cactus evolution, would be dope.

@josephhargrove4319 5 жыл бұрын

Your use of "survival of the fittest" at the end of the video underscores the fact that people often don't know what "fittest" really means. Usually the attitude of people toward the modern tree sloth is either one of patronizing sympathy or outright hostile condescension. The fact of its continued existence tells us that "fittest" just means "well adapted to an environment" and that "weak" or "inferior" traits such as low metabolism, slow movement, and (outside the realm of the sloth) altruism can serve to make an organism MORE adapted to its environment rather than less. In my experience, people who use the phrase "survival of the fittest" usually: 1. Have a limited idea of what "fittest" means; 2. Usually believe that they themselves embody whatever trait is "fittest"; 3. Want to be allowed to utilize this trait to their own advantage without external restraint. In other words, they use it as a rationalization for why their own (rude, unethical, immoral, or illegal: pick one or more) behavior should be unencumbered by societal, ethical, or moral norms. I'm pretty sure that their interpretation is not a strict Darwinist meaning of the phrase. richard hargrove -- Don't get even; get odd.

@helenanilsson5666 5 жыл бұрын

Yep. There's (in my experience) usually some form of overlap between these "fittest survivor" people and the people who insist that Great Warrior archetype is what made humans successful. Rather than, say, functional societies, tool creativity and a very wide range of food sources that allowed us to adapt to vastly different areas and climates.

@raphaelkw7630 5 жыл бұрын

I believe 'fittest' translates to 'greatest adaptability to prevailing conditions'. The modern sloth isn't necessarily the fittest of all that ever lived. It just was the most adaptable to modern conditions. Now that every species has its rise and fall, what about us humans? Will we ever go extinct? Or will some humans die off on the basis of genome xtics or inability to cope with modern lifestyle? Will some of us at some point stand out as 'fittest'?

@hamiltonfangirl1765 5 жыл бұрын

fitness means the ability of an individual to survive and reproduce, passing on its genes to offspring (reproductive success) to be the most fit (or to be the fittest) means to have the highest reproductive success In order to be the fittest, you have to have traits that will help you survive long enough to reproduce, so the traits are part of it survival of the fittest means that the most fit individuals survive another day with the ability to reproduce and leave the most copies of itself (in terms of genes) in successive generations

@cocamidopropylbetaine 5 жыл бұрын

I love this comment haha very astute...😘

@Miketod3 5 жыл бұрын

@@raphaelkw7630 well it's believed we have until 2030 to half global carbon emissions before climate change gets to a point that it's irreversible so most likely we'll be the cause of our own demise from flooding an increase in extreme weather events and a more toxic environment

@afunnymonkey4948 5 жыл бұрын

Hey PBS Eons, could you collab with Tierzoo and make a video to do with the 'history of the meta'? For those of you who don't know, Tierzoo is a KZfaq channel that teaches viewers about zoology, prehistory and ecology but they treat it like a video game. So he calls the animals builds and speaks about their 'stats'. A collaboration between these two great channels would be amazing

@mommamay01 5 жыл бұрын

Thanks for bringing up tierzoo, didnt know it existed and def checking it out!

@Thumbsupurbum 5 жыл бұрын

Well I know what I'm binge watching tonight!

@richardbidinger2577 5 жыл бұрын

Looks like an interesting channel. Will check that out.

@JoaoPedro-qp9cw 5 жыл бұрын

PBS Eons is the Game Wiki, TierZoo is the ultimate streamer

@zooemperor3954 5 жыл бұрын

Yes! You should do that

@zzzarkka 4 жыл бұрын

I’m so glad I found this channel. Almost every video I want to watch. Thank goodness for KZfaq recommendations.

@lyricsronen 5 жыл бұрын

Excellent video. Really good information coming from many fields of science with great narration and easily digestible content. You're my favorite Green brother!

@DeluxxeTrash 5 жыл бұрын

Could you do a video on the evolution of insects?😍

@duhduhvesta 5 жыл бұрын

DeluxXe Trash +

@duhduhvesta 5 жыл бұрын

Entomology all the way!!! I’m a big fan of lepidoptera. Moths for the win!

@grahamharris 5 жыл бұрын

Another important thing that should be mentioned is we could have had big sloths today if it weren't for the tribes who colonized the Caribbean islands. We had ground sloths in Cuba until around 6,000 years ago, just around the time the first humans arrived on the island, which is definitely no coincidence and wouldn't have been caused by climate changes since the ice age had already ended. Artifacts found in Cuba from these tribes are even believed to be depictions of these sloths that humans lived with. It's very much like how we had mammoths until only 3,000 years ago on islands between Alaska and Russia until humans arrived. This means there were still mammoths when the great pyramids were built. While the cold has preserved the mammoths so well that scientists are trying to revive the species from preserved mammoth genes, tropical climates like in Cuba are just about as horrible for preserving DNA as you can get. While we still have elephants today, our sloths aren't very comparable to the giants we lost.

@hotrightnow8932 3 жыл бұрын

You know it's a good video when Hank is in it.

@caroljomartin3051 4 жыл бұрын

They have the most *adorable* faces, too!!!

@Alex-kp5pq 5 жыл бұрын

Xenarthra is a superorder. The sloth falls into a suborder called Folivora, in the order Pilosa. Just saying, though, and I'm still glad for your content!