How Volcanoes Froze the Earth (Twice) 

Excellent

But erosion will eventually get you

This was great 😂

Haha

Sir, let me remind you of that line from a Radiohead song, "Gravity always wins.".

Rick enstein *It’s Rewind Time*

Almost as if Earth wasn't a sentient being

What I have learned is that we should make a lot of artifical (well regular ice but frozen by non natural means) ice control global temp.

Who/what is Earth talking to?

Earth is so jackass, live dangerously

Instead of "nah, skip it", PBS plays the game of "OOH LOOK THIS LOOKS LIKE IT COULD HELP WITH A SUGGESTED TOPIC. Let's wait for it to be analyzed!"

Wonderful PBS helps me not to questions anything. Hopefully one day the brain behind it gets out of the d k.

Yeah total replacement for education was intention of OP.

Like my friends grandparents house smells lol

The Siberien Traps spewed lava for over a million years, continuously !

Also puts into perspective how lucky we’ve been throughout the last 10,000 or so years. Not on cataclysmic disaster. And when nature decides to serve you up a disaster, it’s an all you can eat, baby.

This is why "saving the earth" phrase doesn't make sense.

Carmela Camba - “Saving the Earth” means keeping it habitable for humans (and all other animals).

Just watch Sponge Bob. Bikini Bottom was a metropolis back then.

@@rdreese84 fun fact: Steve Hillenburg was a marine biologist besides creating THE cartoon of generations. Rip

Agreed, never been so excited about a sponge.

Brew Swillis I love how Bikini Bottom has a beach... ?!

Liked @@ILoveElectroAndHouse's comment because it mentioned a dead person.

Schlaf ist für Schattenparker.

@@momon969 no tengo idea de lo que acabas de decir

Mám to také tak. (Same here) :P

W Polsce tak samo

@@momon969 Noch ein deutscher hier.

Yes, although I wouldn't want to wait millions of years until earth finally recovers from the damage we are currently causing in just a century.

I like to consider us historical reenactors of the carboniferous

Until modern humans came along

almost anywhere for that matter really .. hahaha

Same here in Alabama. You bring up topics like this and they call you a queer nerd.

Probably not much of a luxury like public education? Some people may have enough to think about just trying to survive from day to day and trying to cover 4.5 billion years of changing earth can't just start in the middle for a proper understanding. Give them a break, they have the same potential everybody else does, just not the same privileges.

@Lucid Dreamer I was and I'm glad for you. You are not all or even most people. Most people cite those exact reasons for why they can't uproot. There has to be an exception to every rule and I'm glad you gained something from it. Not all of us are that fortunate.

@Lucid Dreamer it would also seem like opportunity would also be key.

@@TheBelrick too much carbon isn't great for us

That would be really interesting! I guess in the meantime, i have a google hole to dive down now lol

@@TheBelrick It's always the dose that makes it poison. In right dose something can be medicine, but if taken too much, it can be poison. Even though water is essential to life, I am sure you would have a really hard time trying to breath under water.

the more carbon we have the more lush our forests will be. CO2 has no correlation to warming or cooling. its all about the sun

Neil Adams .. growing earth theory explains this.. even if its a wild unproven theory

She did a great job I thought.

I'm surprised Mike Rowe didn't do it, he does everything else.

She narrates just like Danielle from animalogic

mrdonetx It’s not just you. She’s terrific. Great science communicator.

She does have a soothing voice.

Fantastic suggestion.

Andrew Phillips it did lol

You wanna talk about it?

mikiGudy they would have to actually understand how old the earth really is to do that and that would help you determine they don’t know s***

@@MileHighGrove Uh, that's where you're wrong friend. :) We have a pretty good idea how old are planet is thanks to the rocks that make up the cores of Mountains and Uranium to Lead Radiometric dating. uranium-238's decay to Lead-206 has a half-life of 4.6 billion years. Does that figure sound familiar?

Good idea, mikiGudy.

@@MileHighGrove Why are you here? It's pretty well concluded how old the earth is, 4.5 billion years. A lot of the stuff talked about on here is from 3.5 BYA to now. They have it all ordered out with the different periods and eras... but like the OP I would appreciate having a visual bar at the top that gives me an idea of what timeframe is being discussed in the video.

+

Long naps required.

I was taught in school that catastrophism was categorically wrong because the grand canyon hasn't changed in over 100 years. I wish I could get a refund on my time.

@@nuadathesilverhand3563 Yeah one of the issues in geology was the view of exclusively steady state and catastrophic geology competing for the longest time. In reality we now know that both were true and non negligible often things happen slowly but every now and then things happen quickly on the order of a few million down to a few thousand years (and in the case of the End Cretaceous extinction event probably hours to years for the various contributing factors)

@@cool-hf2pe No... at least, not the barrier reef.

Any time I come here I just feel stupid for having once believed in the bible... lol

@@Galiant2010 gods real but believe what you want when you die you will fill dumb

@@cool-hf2pe feel*

Ar, might want to reread your post before calling others dumb 😂

@Doctor Drywell you have evidence that he isn't real nope you don't

tanya292 and it may become a snowball for a while maybe twice

@@whafflete6721 haha Yess!!

There was at least one Eons episode where when Blake mentioned the Cambrian Explosion, he SANG the words. XD (Maybe two. There was confusion about the first time it happened. :P)

Diabolical Butler I grew up on pbs kids.

Oh, absolutely. I grew up on stuff like Sesame Street, saw the original "Cosmos" when I was about six, etc. I've often thought that if I had kids I'd plunk 'em in front of stuff like Eons, Sci-Show, Origin of Everything and It's Okay to Be Smart. And the littler kids, I'd play them things like those videos where cartoon planets do a catchy rap about the solar system. :)

I had cable and the answer is 'animal planet' god I wish they'd bring meerkat manor back

I grew up on PBS and National Geographic (when it was a VHS collection my grandpa had). I definitely enjoyed that and still love learning today. So I'm here! This is great. :)

I wanna like this comment...but it's got 42 likes at the moment. That's so perfect I just can't. :)

A...breaking up is hard to do.so practice alot.latta

"They say that breaking up is hard to dooo/Now I know, I know that it's truuuue..." I was recently putting together a playlist of early '60s songs, so no worries, that one was already in my head anyway. :P

You’re right! Mafic volcanoes do produce lower viscosity magma. This allows the gas bubble (vesicles) to bubble up and escape from the surface. An example would be the Hawaiian Islands. However, more felsic magmas which have a higher silica content have higher viscosity(resistance to flow) which doesn’t allow gases to escape leading to more explosive behavior and ash flows/falls.

We are talking about lava hotspots the size of the deckan trap. I'd say the bigger the size the more gas will be emitted. Therefore I would argue that the sheer size of the hotspot is responsable for a sudden athmospheric warming.

Y Comments so big?

.... now I'm craving for some arabic stories. Thank you!

@@KlavierMenn the same feeling

😂

This comment brough so much happiness to my life. Brilliant!

Ancient*

say what ?????

Like tapirs?

@@jwinthepro No, it's another oder (no Artiodactyls and no Perissodactyla), they lived in South America long before first tapirs or lamas came there. This group diversified in the stange world, there was no elephants, but were giant sloths; no wolfs but carnivorous birds. And in this stange world they became no less strange herbivorous.

There is possibility that SO2 in presence of Nitrogen oxides as catalyst might convert intoSO3 and form H2SO4. The amount and concentration of the acid might be not large enough to kill living organisms on Earth. It will however alter enviroment and inhibit some organisms in favour of more low pH tolerant forms. Just speculation.

Sulfurous acid, H2SO3 becomes Sulfuric acid, H2SO4 by accepting another oxygen atom out of the atmosphere.

Stay tuned, perhaps it will happen again. Soon 😉

@@seekernotlost3815 I'm still waiting for Yellowstone to go apeshit.

cosmicVox13 Cosmic rays much?

@@frankschneider6156 true, but I enjoy the US.

Inb4 demonitised

Nathan Ross I would like with a tiny tweak: “Who lived before pineapples under the sea?”

MOBOX Graphics you should have higher goals than this show

@@PeachesiceT No let him have his goals. I've seen his animations and he would totally fit in as an animator for this channel.

@@PeachesiceT what you are talking about, this channel would be great to work for

Did you get your wish?

@@mdhsneaky4421 Sadly no, but I do work on similar channels, check out Real Engineering and Real Science!

just release tons of sulfur into the air it will fix the warming issue and the human issue ;)

@@oyoo3323 Yep, rains of sulfuric acid would sure solve that one problem right quick...

Just one big enough volcano or one big enough rock from space and you won't have to worry about it.

Nuclear winter will fix global warming.

Climate change - Snowball Earth in reverse. Now it's Dirtball Earth.

There are sponges that live by vents so it's possible they are saving that discussion for the next video.

The problem with suggesting hydrothermal vents as the sole or main abode for life during the cryogenian is that they do not produce the conditions for oxygenated water and evidence suggests the sea floor was probably largely anoxic before the ice developed with deep water fossils not showing up until the Ediacaran. Sponges are multicellular Eukaryotes meaning the lack of oxygen at depth is a pretty big deal. Of course we can't rule out the possibility since sea ice formation can drive the sinking of seawater the problem is that during the glaciation most of the ice deposition was occurring at the poles and as such there wouldn't be exposed seas to absorb oxygen into the water. However Sponges are quite simple compared to other animals so it makes a low oxygen environment far more likely than an active animal. There are many sides to this argument and there isn't yet a consensus on the issue. Probably the larger issue at least according to some of the papers I have read is that the Sturtian overlaps with the time period that molecular clock dating suggests for the divergence between bilaterians and cnidarians two major orders of mobile complex animals which most modern animals are descended from. Given the number of surprisingly complex traits shared by both groups the last common ancestor was likely a mix of both groups with two major body layers one of which would divide into two separate layers in bilaterians a well defined body axis muscles and a neural network. Those are energy expensive traits that likely needed an oxygen rich environment. Don't get me wrong I have no doubt that things like sponges could probably meek it out in a volcanic environment but an environment where worm like mobile organisms could evolve. For that the leading hypothesis last I checked bolstered as models continue to improve seems to be one suggesting multi cellular plant and animal life probably survived within the oxygen rich meltwater pools cracks and fissures near the equator. The issue is largely still highly up for debate so it isn't surprising they skipped this.

Dragrath1 Very long, didn’t read

@@Dragrath1 I was under the impression that only single celled organisms survived the very first global iceball (when oxygen ruined everything) and that the multicellular life arose (again but distinctly) after the last thawing.

Sean Ryan no one, the anunaki came here to populate earth for gold.

@@robertmackenzie3973 Do they didn't. You're wrong. I was there!

Caveman Spongebob is in the snowball earth era, thats why its dark throughout the whole time lol

Right in a pineapple cool!!

Thats how papa johns pizza evolved from the crusty crab pizza.

22vx I feel sorry for you

I am pretty sure half of us are spawned from Patrick, and half of us are spawned from squidward, but yes thanks to Spongebob we survived!

You know that Spongebob Squarepants' twentieth birthday is today . Debuted on Nickelodeon July 17, 1999

i.redd.it/vy8o4w8ccle21.jpg

Carboniferous. The oxy high would make us to dumb to live. We would remember just enough and be reckless enough to kill ourselves.

I’ve heard the Carboniferous ~300 million years ago would be the first possible time that the oxygen would be breathable and there would be sufficient plant and animal life to sustain us (if we don’t take into account microorganisms that could kill us and things like that). So, from 4.568 billion years, the earth was toxic to us for four billion, two hundred sixty-eight million of those years.

I posted a long reply and accidentally deleted it and now I want to cry

"Terrestrial Gondwanian crocodylomorphs" - File under: future band names.

now she's getting too hawt

@Andrew Gray The problem is that the Earth is getting hotter but the RATE at which the Earth is getting hotter. There is several orders of magnitude of a difference in the rate of changes between now and prehistoric temperature impacts. Plus those previous analogs were very bad times for life that have been known as mass extinctions such as the grand daddy of them all the Great Dying.

PBS Space Time cough cough

Quade Carter 👎

They've at least covered the ratite birds (Moa, kiwi, elephant bird, etc.), so there's that one for a start.

@@lewisirwin5363 Yeah I watched that video and it was very good, I enjoyed it. But there's thousands of other strange creatures from the islands

I live in New Zealand, not entirely accurate at all!

@@PeachesiceT well that's cuz those animals are normal to you

Technically speaking we are still in an ice age because there is still ice sheets and glaciers on earth

@@elementus2857 Technically speaking, it is complex. The larger time period we are in, Quaternary, which is the last 2.8M years, is an ice age, but when subdivided into 2, the Pleistocene and Holocene eras, the Pleistocene was the last ice age, which ended 11,700 years ago. Though the term ice age is poorly defined as "a time of widespread glaciation", or "a geologic period during which thick ice sheets cover vast areas of land". But having an ice sheets and glaciers is not generally how an "ice age" is defined.

Felipe Lorenzzon I also thought that they must have time travel abilities. They may like to include the words theory and thesis