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How Volcanoes Froze the Earth (Twice)

PBS Eons
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Over 600 million years ago, sheets of ice coated our planet on both land and sea. How did this happen? And most importantly for us, why did the planet eventually thaw again? The evidence for Snowball Earth is written on every continent today.
Thanks to Julio Lacerda and Franz Anthony from Studio 252mya for their wonderful illustrations. You can find more of their work here: 252mya.com/
Special thanks to Judy Pu for answering our questions about Snowball Earth.
Produced in collaboration with PBS Digital Studios: cnvid.net/u-pbsdigitalstudios
Super special thanks to the following Patreon patrons for helping make Eons possible:
Katie Fichtner, Anthony Callaghan, MissyElliottSmith, The Scintillating Spencer, AA, Zachary Spencer, Stefan Weber, Ilya Murashov, Charles Kahle, Robert Amling, Po Foon Kwong, Larry Wilson, Merri Snaidman, John Vanek, Neil H. Gray, Esmeralda Rupp-Spangle, Gregory Donovan, الخليفي سلطان, Gabriel Cortez, Marcus Lejon, Robert Arévalo, Robert Hill, Todd Dittman, Betsy Radley, PS, 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, Gregory Kintz, Tyson Cleary, Chandler Bass, Joao Ascensao, Tsee Lee, Sarah Fritts, Alex Yan
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References: docs.google.com/document/d/1dRTf9IcH_1vA5SfEKbHhgwbYC6XL5mGImebexd_3ihk/edit?usp=sharing

科学和技术

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2019年07月17日

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评论 1 368
Bleikr Sound
Bleikr Sound 23 小时 前
Request for Eons - would like to see a segment about the geologic age when Earth became inundated with iron - some call the 'rusting of the planet'. - Thanks!
Zeebra237
Zeebra237 天 前
Volcanoes erupt and spew ash which blocks the sun. Google this: "1816 year without a summer."
David Jack
David Jack 天 前
I have a crush on the girl speaking in this video
Chris
Chris 天 前
I truly hate the geographical terms. They pick long and difficult names for who knows what reason.
AlessioAndres
AlessioAndres 2 天 前
The best narrator on this channel! I would pay you to read to me haha^^ Thank you :*
Scooter Johansen
Goodness volcanoes are not erupting ATM .
A Simple Dog
A Simple Dog 10 天 前
"we still have glaciers today!" not for long were entering fireball earth era!!!
Peter theoneandonly
Who is Steve!
Thornback
Thornback 10 天 前
can you please also use the metric system, it broadens your material to the rest of the world and gives users of the imperial system reference and knowledge of the universal scale. There is no good reason to not use both scales.
Gary Chynne
Gary Chynne 10 天 前
thanks
Ace Anthony Referiza
Is it just me or does it feel like a lot of the terms she is using doesn't sound scientific enough?
Bert Jongerden
Bert Jongerden 16 天 前
Dammit vulcanoes you did it again!
Paul Dub
Paul Dub 18 天 前
Clear and concise explaining thanks
jeremy Mizer
jeremy Mizer 19 天 前
Finally PBS is on a platform that will pay them for their amazing work
Andy Smith
Andy Smith 19 天 前
Lasts 15 million years,what does that even mean
Max Luv
Max Luv 21 天 前
Why not tell the people the truth?
Max Luv
Max Luv 21 天 前
There was a tectonic plate movement,in witch caused masses amounts of volcanoes to erupt,putting a lot heat as well,causing the earth to heat up,in the center of our planet,causing the cold to go down to the poles & flash freeze the poles,just like in Antarctica is today,with frozen Tsunamis waves over it & all the sort in the sky,blanket the earth & cooled it down,causing the ice age & when the sort,cleared enough,to let the sun shine though,it started melting the ice back,just like what there doing now,there spraying the sky's around the world,in as many countries as they can,it cools down the center of our planet & causes the heat,to go to the poles & melt the poles,
Bob Trenwith
Bob Trenwith 15 天 前
Interesting. Now let's get back to the real science.
Abstract Russian
Abstract Russian 21 天 前
Are you ready kids? Aye-aye captain. I can't hear you... Aye-aye captain! Ohhhhhh! Who lives in a pineapple under the sea?
Ariel Manzanares-Scisney
WHY was the Sun 7% dimmer???
Bob Trenwith
Bob Trenwith 15 天 前
You have the question back to front. It should be - what has caused the sun to get brighter.
Shamir George
Shamir George 26 天 前
Isn't this supposed to be taught at universities? Reminds of me of TOEFL exams.
45 ACP
45 ACP 28 天 前
Man, scientists are dumb. Volcanos aren't cold.
45 ACP
45 ACP 13 天 前
@Bob Trenwith Nani?
Bob Trenwith
Bob Trenwith 13 天 前
@45 ACP Be careful dear. An uneducated, low-life conservative would take that as an invitation.
45 ACP
45 ACP 13 天 前
@Bob Trenwith I'm actually a 5 year old girl sir, and my parents aren't home
Bob Trenwith
Bob Trenwith 14 天 前
@45 ACP You seem to be about 6 years old. An adult actually says something when they speak. Perhaps you would care to point out where in the video they claimed that volcanoes are cold. Or are you going to keep playing kiddy games?
45 ACP
45 ACP 14 天 前
@Bob Trenwith wait, you commented?
Jamie Owns
Jamie Owns 28 天 前
I wonder what the shape the continents will take in 250 million years. Is continental shift fast or slow? or a mix?
Jamie Owns
Jamie Owns 28 天 前
Honestly to find out the truth it needs Chemistry, Biology, Astrophysics and Geology to come together. It's the only way to find out the truth. Space events could easily trigger an ice age and were believed to do so million or so years ago. Also, the equator is funny. Because it's very mixed. Sure it's warm but you also got large tropics. And the hottest place on earth is California. Which is the worst place to put a huge city. With unrestricted growth. No wonder it gets forest fires it's been stealing it's water from the land for decades. it ran the underground water dry I believe. And is stealing water from ranchers up north. transporting it to the city. Then you got Las Vegas another desert city.... That sun idea makes sense. Because in a billion years today it will be 10% brighter. and will be able to boil our oceans. And some think that it may be able to split the molecular bonds of h20. And the Hydrogen will escape into space. Kinda interesting.
Eric Zetterlund
Eric Zetterlund 个月 前
Don't leave me hanging like that! How did the sponges do it!???
Julia Naylor
Julia Naylor 个月 前
Breaking up is hard to do, stop naming Neil Sedaka song.😂
Julia Naylor
Julia Naylor 个月 前
Snowball Earth sounds like a giant cocktail.😂
redemption
redemption 个月 前
"Snowball earth" don't you mean Hoth?
blue smurff
blue smurff 个月 前
This made me appreciate how incredible it is for life to exist on earth
Roberto
Roberto 个月 前
The real question is how earth defrost😜
Bob Trenwith
Bob Trenwith 15 天 前
She answers that from about 8:40.
Trueantitheist
Trueantitheist 27 天 前
The one way we're heating it today global warming.
arno kosterman
arno kosterman 个月 前
As we clossing in to the sun Things got heat up😍💜 To hold the solarsystem together we have manivestet a amptines for oll the energi to hold on en go treu energy goos in the direction of the proton of this system. Metterstate travles inwards so the eurth presence the meterstate there fore we are going inwardts😍
arno kosterman
arno kosterman 14 天 前
Yes i have dislectia en i have manige a way to ride but coust a lots of energys😀 I'm happy with that i ride at oll💟 I can ride sometime 5 minn sometimes 25 minn, if i go onn. our, start every word ........ than mi body eats mi body (autoimune reaction) it is hard to see oll en not to be able to share💟 Now i'm able to share , i progressing treu live en the wish to. En that is way words come out in the wrong spelling.😄 But they are in the right contexct of the information that i shared. because: i see there is a need for it our the other wish to understand it💟🙃 When some ones don't understand thay kan olways ask lile you dit jesterday 😃 That you give the words back for me to ride it in the correct order when i'm able to🤗💕 I'm not here to teach or leurn words spelling i'm here to profide the needs of understanding of creations😍💟 in the totalety.💟 As i surve mi soul en oll souls to reseave the peaces so every one can understand for theme selfs💟🌀💟 Thank you dear soul 💟 love you en en every one🤗💟♾💟
Bob Trenwith
Bob Trenwith 14 天 前
@arno kosterman It is like you are speaking a foreign language. It is even impossible to decipher the meaning of that 7-word sentence.
arno kosterman
arno kosterman 14 天 前
@Bob Trenwith words count en manny as in how much🍀
Bob Trenwith
Bob Trenwith 14 天 前
@arno kosterman You are still incomprehensible. What is "wurths"? What is "counds"? Who is "Manny"? Have you ever considered using Google translate?
arno kosterman
arno kosterman 14 天 前
There is olways some one,🤗 who thinks the wurths counds for what thay say😃 Manny sees wat you say with the contex wat has been shared💜🌀 thank you fore showing😍🙌💟
Ray Johnson
Ray Johnson 个月 前
Hoth. They are naming Hoth not Earth
John Beauchamp
John Beauchamp 个月 前
So can we just grind up a bunch of basalt and dump it into the ocean to sequester CO2 and undo climate change?
Trueantitheist
Trueantitheist 27 天 前
Sure if you're willing to wait a couple dozen million years.
Hajger89
Hajger89 个月 前
I bet Icelanders would like it there.
Chad Coley
Chad Coley 个月 前
What if human lead climate change leads to another snowball earth era hahahahaha
Sweet Williams
Sweet Williams 个月 前
lowkey the spokes lady is kinda hot. Super interesting information in these pbs videos too, kinda addicted
Adam Brown
Adam Brown 个月 前
Man, if only those sponges had banded together to stop climate change before the glaciers melted and flooded everything. How ever could life survive with temperatures over 40F?
Sophie Shenkal
Sophie Shenkal 个月 前
I love love love this channel! It reminds me of just how special, beautiful, and one-of-a-kind our planet is. Thank you PSB Eons
Wendell Clayton
Wendell Clayton 个月 前
C02 cools the earth .
Bob Trenwith
Bob Trenwith 14 天 前
@Wendell Clayton We are currently in an ice age. Did you mean "last glacial period" which ended about 10000 years ago, when CO2 levels were at about 180 ppm?
Wendell Clayton
Wendell Clayton 14 天 前
See last ice age .
Bob Trenwith
Bob Trenwith 15 天 前
Interesting. Now excuse me while I return to the *real* science.
Pheunith: Psychic-Water Type
Hmm so volcanoes are to blame for the ice age sequels. We must act on this to prevent more tragedies
jediflip
jediflip 个月 前
Your knees. . . .
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