Should the Earth Even Have Water?

[@warp.routine]

Hank's charisma and positive "campy" attitude are an antidote to so many things. Thanks for being yourself (this and the other wonderful things you do), my family and I appreciate you.

[@philipb2134]

New scientific formulary: magic math.

[@GSBarlev]

I was not ready for the "18 oceans'-worth of water locked away deep inside the planet" revelation. I've never felt more lied to by my geology professors. Mainly because I never had a geology professor-even in university as a physics major physics PhD, Earth sciences is not part of the core curriculum for some reason.

[@gentrymiller3170]

😂😂

[@markc2643]

Epsom salt is over 50% water by weight. Magnesium Sulfate Heptahydrate. Nile Red did a video about it. kzbin.info/www/bejne/bni5hKiBoNp_sLs

[@_Ben___]

Hydrates. Anhydrates are rare.

[@ANunes06]

We know so much... and yet so very little. Knowing the approximate time in our species' planet's history when it RAINED FOR THE FIRST TIME is wild.

[@DoctorX17]

Hand taking the glass of water deserves credit

[@philipb2134]

Fiction/air crash survival. Elon Musk survived a plane crash. On the ground, they need to feel hugged, p😊lugged.

[@cykkm]

Yeah, the video editor chose Take 17 as the best one. This is indeed not to say that Hank doesn't deserve even more credit.

[@digitalatom6433]

What enthusiasm in this one, Hank! Really enjoyed it.

[@LetsTakeWalk]

Earth: "Nervously sweating".

[@SamTheMan666]

😂

[@MeguminDStaff1007]

Accurately so😂

[@GreenPoint_one]

Nice one xD

[@TheFabledSCP7000]

Maybe that's why the oceans are so salty

[@nemonomen3340]

Stop! You’re making more water!

[@Brown95P]

I'm still baffled at the fact there are rocks on the sea floor that can turn water into oxygen, and now there are rocks that can hold literal oceans worth of water? Man, those very first rainfalls must have been some unimaginably thick pours...

[@MorganEileen]

Oh such a fun video to bring into my classroom for my students when we start our water unit!

[@dakotakelley-vinton4742]

More teachers should be like you and play entertaining science videos in class, I am still a student and I can atest to how much easier it is to pay attention in class when what we are learning isn't mind numbing. I do know some of it isn't the teachers fault as they do have guidelines in the lesson planes they have to follow but when the choice comes I believe the teacher should always choose the more engaging option as it allows learning so much easier

[@erikarussell1142]

Yaaas learning with scishow and Hank Green is always fun!

[@gravestone4840]

Years of playing Terraria taught me that all liquids multiply when in free fall.

[@AaronGeo]

Minecraft water bucket.

[@sholmes5914]

Earth has a lot of water. Maybe two buckets would be better.

[@cademorris7592]

A two by two pit specifically

[@robslife27]

🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣

[@GSBarlev]

Put two in opposite corners of a 2x2 hole, boom: infinite water.

[@ori_05]

Minecraft Classic where it would spread infinitely

[@studioMYTH]

Such perfect timing I’m going to go teach a bunch of fourth and fifth graders about water and the water cycle and something that I like to ask them is where they think all the water on earth came from 🥳

[@bonhominom]

2:30 I'm SORRY HANK!

[@_maxgray]

"Should" is a weird way of asking this. Like, yes, in my opinion, Earth should have water so that life can exist.

[@DJFracus]

Should life exist?

[@brandonvasser5902]

The answer to should should be an answer to why. We don’t have water because life should exist we have water and so, therefore, why do we have water. We’re a rock with liquid water that is the question.

[@larissasplaylists]

I found the title of the video very strange

[@larissasplaylists]

"my opinion" LOL

[@pandoraeeris7860]

Like, the Moon was created from a massive impact with Theia, right? What if most of the water was on Theia originally?

[@guardianoffire8814]

All water was once piss. Your drinking someone's urine.

[@sugarfrosted2005]

5:24 They absolutely taught me that in earth science?

[@jenniferspinler2172]

Thank you SciShow, for making for helping science fun! Also, thank you Hank, for making science funny!

[@kleinerprinz99]

I've been listening to this podcast and the guest was the geologist who visited the remotest coldest area of earth to find those water molecules from the beginning of the earth. Pretty fascinating stuff. Looks like Earth kept its water from the very beginning and no asteroids gave it water which makes sense if you think about the mass of water still within the body of Earth.

[@reeeech9245]

my fav facts i tell my kids. is that you're drinking the same water dinosaurs could have drank!

[@sholmes5914]

it got water from the water store obviously

[@AndrewGraziani-k7d]

Oh, Yah! Well, where did it get the money to buy the water?

[@adamruff7013]

@@AndrewGraziani-k7dmoney tree duhhh

[@AndrewGraziani-k7d]

@@adamruff7013 Curses! You're too clever for me.

[@adriansolis5362]

To staying hydrated! Cheers!

[@kevinmorgan2968]

Big shout out to the hand that grabs the water glass from Hank. Truly a role that wasn’t needed, its inclusion seems insane, but it really added to the verisimilitude and helped me suspend my disbelief. Hank really did have a glass of water! It wasn’t ai!

[@NS-pz8nb]

The beginning of this video gave me a really random thought: you know how there are videos going over crazy planets we've found? Like ones that rain molten this and that? Imagine some planet where water is dangerous to the native life forms, and they have stories about Earth, this planet where water FALLS FROM THE SKY, and could kill you in any number of ways

[@alexv3357]

As someone with a deep vested interest in there being water on Earth, I'll hazard that yes, it should

[@J.A.Smith2397]

Very good

[@TerrinX]

5:00 The Octopus Lady probably would have liked to have known this a bit ealier..

[@thisisme1999]

Very interesting episode!

[@escribealolo]

Why aren't the subtitles available? Bad stuff 😢

[@_maxgray]

Yeah this is a real accessibility fail for a channel that's usually pretty good about that. I'm disappointed.

[@wjbt3]

As a blind person, this is highly unacceptable

[@ahreuwu]

they fixed it, apparently! I currently can choose between proper English US captions and auto generated ones

[@smart_ledtv]

Yeah... Somebody has messed the English subtitles/CCs a lot... like full-screen-a-lot! 😧 @2:56 And there's no subtitles/CCs further on... It is still not fixed. 😕

[@reflect7559]

This would've been a fun poll

[@scanmead]

It tastes really nice... so, yes, we should most definitely have the water stuff. (And we have an even bigger ocean under the crust in.. ringwoodite?)

[@wordsonplay]

Subtitles seem to be broken from 3:08

[@smart_ledtv]

Yeah... Somebody has messed the English subtitles/CCs a lot... like full-screen-a-lot! 😧 @2:56 And there's no subtitles/CCs further on... It is still not fixed. 😕

[@tsbrownie]

This so-called water stuff is actually 2 hydrogens and 1 oxygen. If you look at rocks many of them contain hydrogen and oxygen, but NOT as liquid, gaseous, or solid water. However, when those rocks are melted and the hydrogen has a chance to meet up with the oxygen away from the other stuff, they can form steam/water. So it's possible we have lots of "water" (i.e. potential water or water parts) hiding in lots of places just waiting to be manifested.

[@Paperhousestudio]

Hiya captions aren't working for this video are they forthcoming ?

[@rbach2]

"while they do the academic equivalent of shooting each other with water guns" doesn't work. Love the content

[@sorchaOtwo]

But what made gravity pull that stuff in to begin with? How did a locus of gravity exist there?

[@_Ben___]

What about Theia, before the dry earth? Or able to bring in water?

[@saquist]

Isn't it more likely that the solar system was a differentiated disk of material? There has to be a reason why hydrogen ends up in such heavy concentrations to for a star at the middle. What is a rocky planet forms well beyond the frost line and migrates through a ice belt to where they are now?

[@dianafossi1295]

The ending was epic

[@cleyfaye]

As someone with hydrocarbon friends, I think it's a good thing there's some water down there.

[@Aaano]

At 3:04, there's an issue with the Closed Captions filling the screen

[@SilentRacer911]

This would line up with the development of life as we know it, it started in water when land first arrived, maybe there wasn’t much land in the first place, that’s why we are all from fish

[@francoisgalarneau194]

I haven't seen the video yet but i'm defenetly leaning "Yes" I might change my mind if "no" has a decent economic plan

[@KevCoLabs]

Was watching this with the volume low while I ate breakfast: "Did he just say 'different kinds of ice creams?'"

[@celestial1989]

I love you Hank

[@KingsleyIII]

I mean, Earth has water, doesn't it? So, yes.

[@Bangers_mostly]

I think so, yes!

[@SparkeyAvalon]

Why couldn't it hold vapor? What force pulled it from the clump of matter that it was?

[@Archon1995]

After the protoplanetary disk formed but before full-on planets did, the solar wind blew a lot of the lighter molecules out of the region the Earth formed in and H2O isn't terribly heavy in the grand scheme of things. I mean it does have two H, the lightest of all elements, and O isn't exactly massive either. So there was less H2O available when the Earth formed.* When planets did form there is still a minimum molecular weight they can hang on to. Gravity is important and larger planets have more of it, but so is how hot things are. The more gravity you have the faster the escape velocity needed, but hot things also move faster. Molecular weight + speed vs the pull of gravity determines which molecules can escape a planet's atmosphere. A smaller, cooler planet can hold on to the same molecular weight as a larger, hotter one. (Its atmosphere will probably be -thinner- because there was less material overall, but what it can hang on to will have about the same molecular weight.)** So there was less water available when Earth was forming, and the process of formation should have cooked out most-to-all of what Earth did get. *Fun Fact 1: Neon is one of the most abundant elements (after H and He), but it's very light and as a noble gas does not form chemical bonds unless you're really, really, REALLY insistent about it. Virtually all of it gets blown out by solar winds during star formation, which is why it's rare here on Earth. **Fun Fact 2: At a certain distance from every star, well past the life zone, is where things get cold enough for ices (plural, not just water ice) to remain frozen. The solar winds are just to thin to melt them. This is called the "snow line." Past the snow line is where runaway accretion can occur resulting in gas giants. At least some of the water that used to be in Earth's neighborhood is pretty much guaranteed to have moved to Jupiter, Saturn, Uranus, or Neptune.

[@SparkeyAvalon]

@Archon1995 got it. Solar winds are the force that push light stuff away from forming planets.

[@ultimate_pleb]

8.5/10 too much water

[@Logic_Bum]

No. It doesn’t deserve it.

[@_D_P_]

18 oceans as in 18x the volume of one ocean (from the average of the named oceans) or 18x the total current volume of all ocean?

[@jul1440]

18 world oceans I believe, so all five oceans times 18...

[@LoneIrbis]

I'm thinking there might be something wrong with that assumption that there has to be no water when the earth formed, especially in context that there's ~20 ocenas worth of water on, in and above this planet in total. I mean, asteroids could've bring some of it, but not the whole thing, including stuff that's deep inside the earth itself, right? I'd rather buy the idea that it was initially formed not as close as we think and/or out of stuff that was formed further away. Like huge drifting chunks of ice a size of a moon at least.

[@rmdodsonbills]

While we're talking about all the water that used to be in the ocean, let's not forget that plants take water and photosynthesize it into glucose which they then chain into cellulose that they used to build their structures. There is a LOT of water locked up in these cellulose chains, in woody plants that live for thousands of years, etc. and that's not even considering all the water locked up in our blood and tissues. Being pulled into biological structures is a part of the water cycle that gets very little attention.

[@janAlekantuwa]

Not to mention how all of the oxygen in our atmosphere and a good chunk of the oxygen in oxide minerals originally came from water that was pried apart by photosynthesizers for reducing power

[@sudazima]

not really, lake baikal contains atleast 10x more water than all life on the entire planet

[@GetajobNofreakingway]

Humans and plants give up water to sweat, sweat evaporates & turns into clouds & then to rain.

[@ConReese]

Can't forget about all the water trapped beneath our feet. It's estimated that there's about 2p million cubic kilometers of water within the first 6 miles of the earth's land surface

[@mrflawless1165]

This episode made me unnecessarily thirsty.

[@aprildawnsunshine4326]

Um, where are the captions? Y'all are usually so good about that...

[@maromania7]

During peak hours youtube servers can take quite a while to actually implement uploaded captions. Normally creators counter that by uploading well in advance, but this one might've cut it a bit closer.

[@UKdajenx]

If there is so much water in the minerals underground, surely the water would have been released in volcanic eruptions over the billions of years and condensed in to oceans?

[@jimmygarza8896]

Me remembering the Octopus Lady's rant on what geologists consider "water". 🗿

[@2headedcow5252]

My science teacher always said when in doubt isotope

[@markbothum4338]

You always hear the phrase, "gas and dust". WTF is "dust"? What "dust"? Why "dust"? Where did this "dust" come from? Are there "dust bunnies", or are those cosmic cobwebs? Maybe somebody needs to be cleaning this joint more often.

[@OmateYayami]

Of course it should! Water good!

[@shnilikmw]

Let’s all take a drink with hank

[@moonbender95]

It kinda feels like poetic when Poseidon was once the Lord of the Underworld and Scientists are saying there's more water underground in minerals anyways

[@johnford7847]

"...giant floating bags of water..." I'll never look at clouds the same way. Good video, although I'm not clear on WHERE and when the oxygen and hydrogen atoms originated.

[@user-jg6bd7se8u]

What happens when you mix different isotope waters together? How do you separate them?

[@wordsonplay]

a) Not a lot. Different isotopes act pretty much identically on an everyday chemical level. So you’d just have a mix of different kinds of water. Even tap water is about 0.01% heavy water.

[@wordsonplay]

b) Because of (a) separating them is very difficult, since they are chemically identical. We need to rely on small physical differences, such as mass and boiling point. Heavy water boils at a slightly higher temperature than light (101C vs 100C) so *very careful* distillation is an option. Or electrolysis.

[@wordsonplay]

This is a very high-level explanation. Lots more detail here: en.m.wikipedia.org/wiki/Heavy_water

[@user-jg6bd7se8u]

@@wordsonplay thank you for sharing! I think I saw a Nile red video where he drank heavy water. Super interesting, thank you again!

[@arc4705]

This has convinced me that there's possibly life deep beneath the surface of some moons

[@questprotector]

could thea have been a water planet?

[@fultzjap]

Why can't it just be that oxygen and hydrogen were plenty among the accumulated material, and formed once there was enough mass accumulated to hold onto and form it?

[@fultzjap]

When you make a comment at 4:20 and get the answer at 5:02 🤣

[@seabeepirate]

0:24 the academic equivalent of squirting each other with water guns. I’m dying 😂

[@chillsahoy2640]

Water good video!

[@sapelesteve]

One thing for sure, Hank definitely covered a waterfall of information in this video! 👍👍🌎🌎

[@magic_mockingjay4972]

Why you say that heavy H2O is excluded just when continents arise? Should be always?

[@truthhunterhawk3932]

Makes sense that Earth originally was covered in water

[@johnharder5618]

Interesting video As I watch your video A bunch of that water is falling from the sky as rain But in 8 or so hours it is supposed to be snow Boo Hiss

[@melodyqueen6432]

Loved this video, thank you!! You tangentially touched on this but I've always found the question of "where did our water come from," to be a bit anthropic. We are fascinated with water because we need water to live, so understanding the nature of how it gets around the cosmos is interesting, that much I understand. But it invokes a much larger, more complicated and interesting question - out of the countless number of combinations of compounds that we find on Earth, which are the most out-of-place given our current models? I feel like adventuring questions down that path would lead to new insight about the water question. Water is fascinating though, and i have several watery questions, such as... Water seems to be "in" everything, even things we think of as dry, unless it is bond-breakingly hot. Is this pervasiveness another specialty of water, or does everything have a little of everything in it?

[@aSpyIntheHaus]

Now we're "moister than an oyster"

[@gentrymiller3170]

If there is water in the Earth and the moon was formed of debris from the Earth, is there water in the moon?

[@kiwionkeys]

There’s a little bit of water on the moon, yes! But it’s mostly in tiny amounts in rocks and glass, and in the permanent shadows of some polar craters, nothing ocean-like :(

[@QuintenWhyte]

no captions?🤔

[@smart_ledtv]

Yeah... Somebody has messed the English subtitles/CCs a lot... like full-screen-a-lot! 😧 @2:56 And there's no subtitles/CCs further on... 😕

[@dadesurge41]

I thought something was wrong with the app, glad to know I'm not the only one 😄

[@dadesurge41]

​@smart_ledtv that's the moment I thought my app (and maybe my phone) were going mental 😆

[@smart_ledtv]

@@dadesurge41 So did I. I've even rewound the video to see the moment again and to make sure there's no fault on my end.

[@diyeana]

Surely, I'm not the only one who did a spit take at "18 oceans' worth of water."

[@Peter-ni2ql]

Yes...and if anyone touches the water on earth it's an immediate one way to my hell

[@astralb.2647]

Hey guys, just a headsup; but captions are unavailable for this video!

[@xpndblhero5170]

Is anyone find the water cycle kind of disturbing once you realize that all the water in the world was, is and will always be sweat, spit and pee at some point in it's cycle.... And it just keeps cycling through the clouds/air we pollute along w/ evaporation from a polluted ocean. I always thought the rain tasted weird as a kid but now IDK if I'd drink it at all without boiling and filtering.... I find that very depressing and I hope my descendants can experience fresh clean rain like I did as a child someday. 🌧️😛😁👍

[@larryscott3982]

Maybe sample the water vapor ejected from Jupiter’s moons

[@jul1440]

Well, yeah. It is like dangling a chocolate bar 50 feet in the air above a hungry crowd and saying, "maybe someone should eat it".

[@TheTreedodger]

How about an ice comet, then?

[@cdavie5]

Ah yes, gnarly space ingredients.

[@Nixthyo]

Terraria’s Bottomless Water Bucket

[@Yupppi]

Would've been more fun if it was like coal and hydrogen and oxygen in fire producing water and co2.

[@masterimbecile]

So the scientists want to compare the ICE-sotopes?

[@johnt6213]

It's even in the ground, not just on it!

[@leightonolsson4846]

*other isotopes are available

[@christopherwelch136]

Well it has an atmosphere. Am I missing something?

[@Mr2Reviews]

I think in the future we'll be mining water from Europa and transporting it to our colony on Mars. Or just push Europa into Mars orbit and siphon the water from there. Then Mars will also have a moon just like Earth. We could also maybe install some technology on Europa in Mars orbit to shield Mars from the sun's radiation if we don't make one on Mars already.

[@sIosha]

Dang, if Earth used to be a water world, it seems Team Magma is winning.

[@paulgaras2606]

I think it should. I like water

[@leotrollstoy2351]

Thank you, water.

[@graphixkillzzz]

i learned about ringwoodite when i was in 7th grade. i was born in '78 🤔🤷‍♂️

[@comedyman4896]

Personally I think the Earth should have water, I drink water a lot and I really like it. That's just my opinion though.

[@graphixkillzzz]

it's crazy how efficient the earth is at generating fresh water, but yet fresh water is only like 3% of all the water in the world 🤔🤷‍♂️

[@tmplblck]

Nestle asks this every day.

[@God-ld6ll]

but we need it. 😭

[@dombo813]

No, I'd rather get rid of it. Everything's just so damp all the time. I know having water is in fashion for planets right now, but I'm over it.

[@themightyflog]

Hmmm…..maybe some anomaly put it there as the anomaly was creating something suitable for life.

[@euducationator]

Removing water from the planet earth is a cause I can get behind.

[@larissasplaylists]

Are you stupid? We're going to die if we don't have water

[@iam-Saturn]

Irony/joke?

[@euducationator]

@@iam-Saturn Yes.