This Cave Has Been Frozen Since the Last Ice Age I NOVA I PBS 

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This cave in Canada remains frozen every summer-and it's been frozen since the last Ice Age 10,000 years ago. What can it tell us about Earth's future climate?
Stream "Polar Extremes" online to learn more: www.pbs.org/wgbh/nova/video/polar-extremes/
Polar Extremes
Director: Lucy Haken
Assistant Producer: Sacha Thorpe
Digital Production: Angelica Coleman
© WGBH Educational Foundation 2020

Наука и технологија



19 феб 2020






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Коментара 38   
Jari Пре месец
Shoundnt the limestone deposits tell when humans lived in the cave I was thinking of sot deposits on the moist limestone from fires burning in the cave.
Jari Пре месец
there should be frozen dna samples of animals ,pollen even hair from Indians that visited the cave ,spit most shurely furter in
paktofu123 Пре месец
Is that terraria music? Lol
S. Tapia
S. Tapia Пре 2 месеца
Caves that dead end in ice? Makes me wonder.
Lisa Schuster
Lisa Schuster Пре 2 месеца
They haven’t lived in Massachusetts.
darkstar18498 Пре 2 месеца
Climate change hysteria. Things change people. Chicken little was a book. Nice video. Shame the sissyness ruined it
Kain't U Dig It?
Kain't U Dig It? Пре 2 месеца
An iceworld! Far out man. Those lucky dudes. Wish I was there.
Nathan Vaughn
Nathan Vaughn Пре 2 месеца
Uhh... yeah... the walls grew layers 400,000 years ago and in 50 years they're gonna be growing layers again. Something tells me you have no clue what idea you're talking about. Truth is, those walls used to be underwater, probably during the flood 4700 years ago. And were probably formed "underwater", just like the same formations that are still "underwater" in caves around the world today.
Nathan Vaughn
Nathan Vaughn Пре 6 дана
Nathan Vaughn
Nathan Vaughn Пре 7 дана
Nathan Vaughn
Nathan Vaughn Пре 7 дана
Do you think we're gonna have enough time as a species to make it to the new earth?
M Whitelaw
M Whitelaw Пре 7 дана
I don't think that the red deer valley was underwater 4700 years ago man. Think it was partially covered in ice as the sheets were still receding
Nathan Vaughn
Nathan Vaughn Пре 2 месеца
Ok bad bacteria, don't take two of these for the 20%'s sake, and don't call me in the morning. 😆
Ben Connectify
Ben Connectify Пре 2 месеца
“This cave has been frozen since the last ice age” Humans: I’m about to do what’s called a pro gamer move
suzi perret
suzi perret Пре 2 месеца
CO 2 an unprecedented threat to humanity. Yeah, humans think they are so invincible! Wrong. We are actually fragile...and susceptible to Climate Change. Why the hell would we willingly contribute to our own demise? Well , when you think about it, after everything is dead and long gone, the creatures like jellyfish will swarm the oceans unimpeded.
Daniel Shade
Daniel Shade Пре 2 месеца
Is this cave also the Republican Party ? (Frozen since the ice age)
Ralph Hooker
Ralph Hooker Пре 2 месеца
I would feel very guilty entering such a microcosm. My mere breath could cause damage.
Saint Allnights
Saint Allnights Пре 2 месеца
Eddie Hui
Eddie Hui Пре 2 месеца
You should just take some pictures and go home leave it alone
NewAtlas Пре 2 месеца
Global warming is just a matter of time.
Anym Пре 2 месеца
What a pleasure this must be to experience
John Adams
John Adams Пре 3 месеца
Oh yeah when was that last winter??? Whats funny is your claim and pseudo science.You just say it and there for it is , thats so compulsory. Where is the evidence that there was ever an ice age. Who originally made this claim??? How did they come to their findings??? Where. Is the evidence so that i may view it ????
Ralph Ellis
Ralph Ellis Пре 5 месеци
There is still no empirical evidence that CO2 causes global warming (correlation does not imply causation). An increasing greenhouse effect depends upon increased re-radiation from CO2 in the atmosphere, and this manifests itself as a tropical tropospheric hotspot, plus increased Downwelling Longwave Radiation (DLR) which warms the surface. However, this hostspot and increasing DLR has never been detected. In which case, CO2 is not causing global warming. And we know this because during the ice ages - when CO2 levels were high the world cooled, and when CO2 levels was low the world warmed. The climate would not do that, if CO2 was the primary feedback agent. In reality, the primary feedback agent is albedo (reflectivity), which explains all aspects of the ice age temperature cycle. Please see my latest science paper on CO2, which demonstrates that during the ice ages CO2 was NOT controlling world temperature. Modulation of Ice Ages via Dust and Albedo: www.sciencedirect.com/science/article/pii/S1674987116300305 Ralph.
Tim Faulkner
Tim Faulkner Пре 3 месеца
@Stevie Where is the link to your paper Stevie so we can read your points in greater detail?
Stevie Пре 4 месеца
This isn't true in the slightest.
Juliette Lopez
Juliette Lopez Пре 7 месеци
Ok... that's scary
treaty92 Пре 9 месеци
Wow, the planet warms and cools kind of like a natural cycle. Hmm LOL
Chloe Hennessey
Chloe Hennessey Пре 10 месеци
NOVA. We’re still in an ice age. We are just starting to warm up to past levels- that’s why he said the earth was just a couple degrees warmer 400,000 years ago. We haven’t fully recovered. We can stop burning coal and stuff- but it won’t matter. The earth is gonna do what it’s done for billions of years.
Taylor Andre
Taylor Andre Пре 3 месеца
RIP Anne Frank
Hugo Benito Gonzalez Sucks Donkey Member
Climate Change is absolutely real...Man influenced climate is real. Man started climate change is total bullshit. Dude says unprecedented climate change....what of the 400 meters of sea level rise out species has already seen. It's been getting warmer since the end of the last ice age. No help from us. Solutreans and Clovis man, (last I checked anyways) had 0 factories and 0 sports utility vehicles. The River Thames stopped freezing before the industrial revolution.
Julie Davis
Julie Davis Пре 2 месеца
Dustin Wyatt
Dustin Wyatt Пре годину
Your government can’t change the weather. Just a reminder.
M Whitelaw
M Whitelaw Пре 7 дана
@Stevie I'd like to see a government come up with a plan for that. Ok Now it's a law Everyone ......walk to work from here out.....mmmk!?!?
Dustin Wyatt
Dustin Wyatt Пре 4 месеца
Really? Educate me please cause I don’t see any evidence of that.
Stevie Пре 4 месеца
no but they can reverse climate change, just a reminder.
Clarkansas Пре годину
Michael Hartman
Michael Hartman Пре годину
We have had 4 warmings, and 4 ice ages in 400,000 years, yet only one was warm enough.
Mister Angel
Mister Angel Пре годину
Oh waaaaauw... Just.. Waaaauw😲❤️
Dan Kole
Dan Kole Пре годину
Confirmation bias raises it's ugly head again.
Mike jade
Mike jade Пре годину
makes me wanna leave a crate of beer inside ther for the summer break
S. Tapia
S. Tapia Пре 2 месеца
It would explode while freezing.
Regi rock
Regi rock Пре 6 месеци
Yer beer would become alcoholic popsicles
In The Garden
In The Garden Пре годину
After the fourth expletive...🙄
nyyght7 Пре годину
NOVA PBS Official "Frozen Since the Last Ice Age" uh, NOVA, you do realize the earth is technically still in an "Ice Age"?
Warwick Clark
Warwick Clark Пре годину
technically..... youre a pain in the ass
Dirk Diggler
Dirk Diggler Пре годину
Fear mongering at its programmable best.
Stevie Пре 4 месеца
absolutely not.
Blue Пре годину
And humans that have the ability, won’t do anything about it.
Blue Пре годину
They should have taken some disco lights in.
Steve Deasy
Steve Deasy Пре годину
I'm very disappointed that this video ends with only a concern about a threat to humanity. I mean after all we are witnessing one of the quickest extinctions ever right now.
Dirk Diggler
Dirk Diggler Пре годину
The Purge has begun....
Steve Deasy
Steve Deasy Пре годину
In another article recently I saw that there are 80% less bugs hitting windshields these days.
Machiel van Dijk
Machiel van Dijk Пре годину
Jeff McNally
Jeff McNally Пре годину
This kind of evidence is why we should stop arguing the causes of climate change; and focus our efforts on carbon reduction.
konker420 Пре годину
sadly my generation thinks The Day After Tomorrow is a historical documentary.
Stevie Пре 4 месеца
...I'm sure they don't.
Saran Cisse
Saran Cisse Пре годину
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