How Do Glaciers Move?

This video is so cool, it's ICE COLD
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Glacier ice is weird. It’s solid. Solid things aren’t supposed to flow. But glacier ice flows like a liquid, and it does that without melting! How is this possible? I traveled to Mendenhall Glacier in Juneau, Alaska to find out.
Special thanks to Josh Cassidy from KQED’s Deep Look for joining me in Alaska and shooting this episode! ► / kqeddeeplook
Filmed under a Special Use Permit on the Juneau Ranger District, Tongass National Forest
Archival glacier image: Glacier Photograph Collection - National Snow and Ice Data Center
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READ MORE:
Paterson, William Stanley Bryce. “The Physics of Glaciers.” Elsevier, 2016.
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It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
Director: Joe Nicolosi/Josh Cassidy
Writer: Sarah Keartes
Cinematography: Josh Cassidy
Producer/editor/animator: Anastasiya Bulavkina
Producer: Stephanie Noone and Amanda Fox
Produced by PBS Digital Studios
Music via APM
Stock images from Shutterstock www.shutterstock.com

[@besmart]

A question of glacial proportions? Icy what you did there.

[@theimmaturemature1152]

It's Okay To Be Smart Awesome Video

[@ewwitshim]

It's Okay To Be Smart Noice

[@r.r.n8998]

That was some dirty snow

[@lilyhuang3677]

Hey It's Okay To Be Smart I love your videos :D So informative and the animation's like Kurseagast but BETTER. And the host looks cool... ;D

[@kiir0whei23]

I can hear ur voice Doc Joe! 😆

[@zbobhigh]

"Solids don't flow right? Not so fast" Why is no one appreciating how perfect that was!

[@duck6872]

Ikr

[@AirborneSurfer]

zbobhigh Maybe he could pitch a few more, but we might miss the drop.

[@andrewc3336]

AirborneSurfer This comment is absolutely brilliant.

[@AirborneSurfer]

Took 30 days for someone to get that. Well done, sir!

[@iquemedia]

With their feet. Next question

[@kevinmillard1323]

Heh... nice...

[@victoraugusto3509]

chat.whatsapp.com/5GQlAh68QHa9fDHzU6RJOM

[@mossymoss1352]

Ique XD LOOOOL

[@nietzschesghost8529]

Heh... nice....

[@Glacier_Nester]

Well, I'm gla-sure you did your research on this one! Neat topic, keep up the great work.

[@KingGB1]

Glacier Nester lol

[@lorien6205]

Snow: This isn't even my final form!

[@fandyus4125]

Of course a weeb says this.

[@berengerchristy6256]

Its cold level! Its below nine THOUSAAAAAAAAND!!!

[@comiccat4650]

Beyond Lorien More like "This isn't even my final firn!"

[@admiralcat3809]

Saying anime references = weeb Damn logic!!

[@mrnoro9574]

no! it should say, "What, Snow is de-evolving" as snow is peng

[@Gamer-jv8uv]

*"Okay guys, so throw a snowball at me when I finish the outro, trust me, they'll love it"*

[@exopxo5691]

lol

[@Pleaseremainshyam]

Every time I see your video in my feed I look and think "meh, that's a mildly interesting question" then I watch and come away mind blown. Every time.

[@someanonymousdude3609]

I actually agree.

[@neeralikanji]

True brew ginger beer

[@vizthex]

Nooo it's CLEARLY waterbenders!

[@bubblegumunicorn8286]

vizthex lol

[@annonymsurfer3189]

Noooo Clearly it's GAWD

[@BetterInsight]

Glaciers are cool Literally

[@abdelqaderamad5835]

Better Insight ha, i see what you did there

[@johnrichard4882]

Cool bro

[@ENDERPRO99]

Better Insight HAHAHAHAHAHA 😂😂😂😂

[@KishoreShenoy1994]

'ice joke

[@greenlight5025]

That joke made me *crack* up

[@jerry6581]

Don't let this distract you from the fact that if you or a loved one has been diagnosed with mesothelioma, you may be entitled to financial compensation

[@rohengiralt]

Kwasi Price +

[@KQEDDeepLook]

Wow - those blues are incredible. Just curious, did you get to hear any of the amazing sounds that glaciers make? Such as the 'Bergy Seltzer?'

[@besmart]

Sadly, no! Just the "cronch cronch cronch" of my crampons

[@halonothing1]

I've always wanted to throw rocks on a lake with a thin layer of ice in it to make those crazy bullet-like noises. I have to wonder at how many different ways large masses of ice can make extremely loud, and unusual sounds. I bet there are all sorts from glaciers rubbing on glaciers, glaciers rubbing on rock, rocks being broken up on a large scale. I'm sure just the way in which a glacier causes the ground to sink would make some weird noises. They're probably mostly infrasound from the size and time scales involved.

[@thomster8639]

"Glaciers are cool.. not just because they are made of ice." nice on bud

[@Master_Therion]

"How Do Glaciers Move?" Like everyone else. They either hire movers or rent a truck and do it themselves.

[@alveolate]

you're losing your top ranked comment spots man.

[@Master_Therion]

Yeah, I have my good days and my bad days. But as long as I can give a few people a chuckle, I'm happy ^_^

[@feynstein1004]

Come on, people. Can we get some love for my homie Therion?

[@shellez207]

Noooo

[@Green-yf9py]

Boooo!!!

[@yoMXTT]

You better have tried some glacier water.

[@besmart]

Best water I've ever had!

[@tea.lillith]

Fun Fact: In Germany there is a spirit called 'Gletscherwasser' which literally translates to glacier water.

[@bradleypeterson2208]

Fun Fact, the water they tried fell as snow over 200 years ago! The only other place you could get water nearly as clean would be a spring or another glacier.

[@rikkapikasnikka]

It was really cool that you got to take a trip all the way up north to Alaska! Great video, loved all those chill puns! Glaciers are fascinating in how they shape the earth around them and the incredible valleys, rivers, lakes, and everything else that is effected by their power.

[@goatthrottler666]

I like this guy he teaches without being boring or condescending. You cant beat that.

[@nanic8394]

I'm glad to see this guy traveling and making videos like this. I'm just happy he looks happy👌

[@HopeSopeGaming]

I liked this very much. It helped me learn more about glaciers for homeschool.

[@JavierCR25]

This channel should be mandatory at schools everywhere. My son will watch at least 2 of your videos per day.

[@bongobongo3661]

It was ice to see a cool video like this one. Makes my heart slightly less frozen.

[@OutlawMaxV]

Glad you get to travel to new places and learn new things, and share them with us!

[@howiedavis8258]

About time SO get a segment lol I love it up here

[@Dunkle0steus]

I heard that because ice is less dense than water (it expands when it freezes) enormous pressure can overcome this and can essentially "liquify" the surface atoms of ice into water. I've heard that as the explanation of ice skates, that you're actually sliding on a thin film of water, not the ice itself and that if it's cold enough, there won't be enough energy to force the water out of position and ice stops being slippery.

[@-7070]

Yet another impeccable example of why the topic of understanding viscoelasticity can aid in understanding the planet no matter the scientific field studying it, and is always fascinating.

[@terriblej6107]

How do they move? .... Slowly :)

[@vizthex]

No it's waterbenders

[@DarthVaderin]

*Snowly

[@quocvinhnguyen2899]

despacito xD

[@westzapwood8697]

Amega Elite your reply is underrated..

[@vineshpendurthi313]

Despacito...😆

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I found out recently this channel and have been watched many videos. This is really one of my favorite channels of all! 😄😄😄

[@emanresplandor3878]

This channel is so underrated.

[@michaeldaugustine9249]

A good example of how a solid can move like a liquid is pure gold. Put a little pressure with your figures on a lump of gold and it will bend or stretch

[@SmartSula]

This video was so visually appealing

[@Idk-lh2ot]

anyone else here cuz you disconected from your online geo lesson and then your mom was just like "just watch a yt video about it"

[@mrcoolabhishek123]

very well explained. thanks.

[@piplupcola]

So happy you collabed with my other fav scientist Sally!

[@Tomipolus]

I've been in helicopter once, got a 15 min free ride! :D Broke my right clavicle and left arm from hitting the wall on bycycle...so they had to transfer me from an island that had no hospital to the "nearby" city that had one. Cant say it was worth it...buuut...yeeeah...t'was nice.

[@deltaslayer1132]

"free"

[@obezy.]

I watch you ,vsauce and the riddle like 24/7

[@a.a.5880]

They way you enjoy science makes me enjoy watching your videos

[@pseudophd1073]

Beautiful scenery!

[@rickreynolds3604]

Great job, y'all--thanks! PBS is the best. :)

[@sciblastofficial9833]

Every It's Okay To Be Smart episode but every time Joe says a pun "Another One" from the Sugar episode plays

[@NatureShy]

I’ve hiked by many, many glaciers in both Washington, Canada, and Oregon. I’ve even stepped 50 feet from the base of one in the Canadian Rockies. Outside of Alaska, Washington is the most glaciated state in the United States. If you want the best glacial experience in the lower 48, then you MUST hike or visit Mount Rainier National Park, North Cascades National Park, or Olympic National Park in Washington. In fact, practically all of Washington’s mountains north of Mount Rainier is heavily glaciated. Glacier National Park in Montana has got nothing on Washington’s glaciers! If you’re from Portland, like me, then you can hike on Mount Adams, Mount Hood, or Mount Rainier to see glaciers up close.

[@ChristopherTheBanana]

Damn, an entire chapter of my college textbook condensed into a few minutes. a nice refresher

[@adamaewilson8392]

This guy was so excited about riding in a helicopter for the first time. Love the energy!

[@fijigoya1236]

I love how blue the ice was

[@ethankim4086]

thanks. so helpful!!!

[@twofish.6579]

Thank you from an Aussie homeschool mum.

[@Silmerano]

Has watched no less than a half dozen documentaries on Glaciers and knows exactly how they move. Watches video anyway.

[@TheJaseku]

fantastic work

[@Itznoelzz]

That's why I love your Chanel it's interesting

[@Grim_Beard]

DarkDiamond Snow21 Smells nice too.

[@Seamemaria]

uau I also want to be on top of that glacier. Glaciers ARE super cool. Was on top of one in Norway and it was just an overwhelming feeling. The intense blue of the ice is just incredible. Lets try and let the glaciers continuing being glaciers. Great video!

[@dubya13207]

I can see that public TV budget at work...they couldn't even afford to give you a full-sized Snickers to squish!

[@h.grenukathilakarathne8356]

Welcome to the snow world, where snow evolves into firn then into glacier. Lol. Great Pokemon animation for snow to firn

[@shimi594]

Thanks for the video!

[@neroquin]

Thanks for my geography test summary

[@canadaiantenten]

You could have come to Glacier National park here in Montana to study glaciers, we've got lots! Or had lots..... they are kinda melting..... but we have lots of lakes made by glaciers and they are some of the clearest waters you will ever see

[@ozdergekko]

In the Alps, glaciers are receding at a speed that already has led to several once big glaciers completely vanishing.

[@ansambel3170]

Cool video, very refreshing!

[@katiecarroll1451]

I liked this video. Then you referenced pokemon using the original 8 bit music and now I love it.

[@shr2.718ya]

This is the best channel on KZbin. I hate waiting for a new video every week

[@michaelsilverbane11]

Got introduced to you from the Sally LePage Sofa Science vid. Subbed.

[@x9x9x9x9x9]

This would have been the perfect time to go over why glacier ice is so blue.

[@jimmyshrimbe9361]

Super cool!

[@veganchaatparty]

Thanks for the Video.

[@matthewhardwell2780]

My mother asked if the table was okay when i fell onto it and hit my eye. 2 years later i am blind in that eye and thats a major contributing factor to the blindness

[@manuelxd4231]

3:54 so COOL

[@David-g6]

a Texas citizen going to an icy hell hole Alaska. The things he does for science!

[@colbeyhair3149]

Thumbs up for the Bill Nye pun... "Glaciers are cool!" Well done.

[@iceburnhex]

Love these videos... and the horrible horrible puns.

[@tttylerpantsthesquirrel2814]

I was eating a very delicious brownie while watching this

[@christopherbell5817]

A tortoise is mugged by three snails. When the police ask him to describe his attackers, he replies, 'i can't, it all happenend so fast'.

[@Pman8362]

Juneau is an awesome place

[@Moh-fu3gj]

You know why people like glaciers Because their COOL❄❄❄❄❄❄

[@muhammadadamqarllief6901]

It's called Ahtohallan. (river of ice)

[@1234bobfox]

I've been to that lake. They have a pretty neat building nearby with pictures and infographics about the glacier. I can't quite recall, but I think the people running that lodge also offer those helicopter rides

[@a.g.7880]

Snow video in summer. Nice.

[@gohanr1271]

the presenter was wearing SUN glasses in the SNOW i guess you could say he was to COOL .

[@TaT420X]

I went on the same helicopter to that glacier. I remember distances where hard to judge when standing on glacier.

[@Gaming_Hub_UK]

wish my classes were like this

[@jw8628]

This dude has a really cool job...

[@SH1014]

There was one thing I didn't quite understand, does all of the ice on the glacier move or only the bottom part because oft that high pressure/low melting point combination?

[@Kraigon42]

I'm normally pretty slow to get at things (and I'm starting to like that), so I expect to miss a month-old three night special, but... Good job on advertising a three-night special two nights after it had already started.

[@doof.1]

That Pokemon reference though. I just evolved both a Shiny Ivysaur and Oddish while watching this.

[@akpsyche1299]

I ate part of the Knik glacier.

[@lilyhuang3677]

AHHHHHHHHHHHHHHHHH the glacier puns guns? ok idk what I'm saying I'm trying to make a pun but unfortunately I'm too stupid

[@prapanthebachelorette6803]

Hey ice baby, your coolness lies in the way you move 😎😉

[@bengoodwin2141]

Before watching, I would guess it’s the same reason sand flows, but it’s melting and re freezing constantly on the inside

[@darthplagues]

Boss battle 1: snow Second form of boss: glacier

[@flurryv2987]

wow i was watching videos about glaciers when i got the notification.

[@TheLegoJungle]

I’ve been to Mendenhall Glacier!

[@poeticsilence047]

Would love to see you do a collaborative video with Hank Green from SciShow

[@stevenbaumann8692]

You could have just said "ductile deformation". You talk about brittle deformation. Sometimes they will pick those boulders up. Also. You mentioned this but people may have missed it...even if a glacier is retreating the internal ice is still moving forward.

[@darkenforcer245]

Thats cool

[@patraicemery]

Cool stuff

[@alexphelan6011]

You guys are great my parents say you guys are great cause I have fun listening and I learn a lot thx guys and keep it up!!

[@Zpajro]

i like the music in this video

[@josiaserad6574]

Talk about the antartica glacier!!

[@filmackrakin9895]

00:51 When your fps of your camera matches the rpm of the heli's blades

[@besmart]

Or the engine hadn't started yet. But I like where your head is at!

[@filmackrakin9895]

Oh man..i saw the blade curved and i thought it was moving. Excuse me but i'm sleepy and its 2:32am in Greece

[@miles45ful]

The puns always kill me: "solids don't move... do they? NOT SO FAST"

[@miles45ful]

Also I cried when you used the old Pokémon evolution sound

[@pulakitbharti7687]

This video would be remembered in History.. Quite literally.. Last generation to se it's magnificence..

[@exopxo5691]

this man trying hard to break a bar of chocolate at 5:02

[@exopxo5691]

LOL TRYHARD XDDDDDDDDDDDDDD NUUUB

[@strivenz]

Glaciers are cool I don't mean like cool when your swag. I mean cold.

[@sashiboop]

Idk maybe they take an uber