Where we get our fresh water - Christiana Z. Peppard
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- Опубліковано 11 лют 2013
- View full lesson: ed.ted.com/lessons/where-we-ge...
Fresh water accounts for only 2.5% of Earth's water, yet it is vital for human civilization. What are our sources of fresh water? In the first of a two part series on fresh water, Christiana Z. Peppard breaks the numbers down and discusses who is using it and to what ends.
Lesson by Christiana Z. Peppard, animation by Jeremy Collins.
Who ever you are, you can do it!!
do what tf
@@seamless- mine isnt even homework its just part of a project
Is it just me or does the narrator sound like she is about to cry?
I was about to say that too!
Yo, I even said that in class.
No it’s not just you. I heard that to.
@@zekel.2083 I was going to say that then I saw the comment, then about to say what you said. 😠
@@ominous_stranger si- six years ago man hahaha
I wish they'd re-record this with someone who wasn't wavering so much vocally. The info and animation is great though.
Still we should have respect for her
This makes me feel a lot better about using water. I always felt like I was completely destroying the world when I took a shower. I'm not going to go out and use more water now, I just don't feel as bad for using as much as I do.
Water is something that never goes away.. it transforms, renews and recycles... and always will. We can never kill water. That is a fact.
Water is recyclable since we live in a biosphere. As long we don't pollute our rivers and skies, our water will always be available to us.
Absolutely brilliant!!!
very much helpful from the point of view of my lesson
This is such a helpful video!!!!Thanks so much!!
Great perspective into the amount of water we have and use. Thanks!
No
Our geography teacher forced us to watch this s
SAME
Even me
Same
I'm thirsty now... :(
Love it! Quiz tomorrow :)
Lots of places DO use surface water for everything, though. In BC, where I live, we get our everyday tap water from a lake atop a nearby mountain. It basically sustains a city of 12,000 people every day. But we get rain like nobody's business, so it's different.
In a lot of areas, ground water is not replenished at the same rate was which it is used, and you see the ground water level go deeper. Even in rainy Vancouver. The wells in Langley see the ground water levels decrease and get contaminated by surface use.
Amazing...
Thank you Ted...
@Henry D Pleasure.
Very quick! synopsis of global water consumption- Serves as great into for deeper exploration of water or tangential topics
latitude and longitude lines cross at 90 degrees, so the shape of the country is distorted, but the areas are more close to real life.
this makes it easier to compare countries by scale.
its not used much in the west because it makes Africa, Australia and south America look bigger than the US and Europe, which they are.
The use of the word "literally" surprised.
Nice video, thank you ted ed.
Thanks for the lesson, it has given me a good idea on how to start my university essay.
I love her voice.
@Sebastian Hellums u suc
The narrator's voice gives me the shivers, not to be rude or anything but she sounds like she's on the verge of crying because she is scared. Does anyone else think that? xd
((وجعلنا من الماء كل شيء حي ))
Currently taking an environmental science course and the whole thing is about water and how to conserve it. People are actually trying to figure out ways to be able to reuse water. Right now, some ecofriendly buildings actually reuse water for their toilets. Some use rainwater for sewage and whatnot. But they haven't found a way to reuse water for drinking...so my teacher believes...
Great short
Thank you!
Great video!
(from cont.) and uses something similar to Oxygen. We already know organisms that do not use Oxygen, but water is dipolar, so it has a wider range of things that it can dissolve. dipolar means both acidic and basic. Bases and acids are the same dissolving power based on how far from 7 in pH they are. Water has a pH of 7, but can dissolve many, many things.
este mismo material no lo tienen en español?
What about the water in the atmosphere? Does that account towards "surface" water?
Wow, very nice. Didn't know that about water.
don't cry boo, water isn't gonna hurt you~
IMO, what she said is true. Early forms of life came from and lived in water. So there really is no life (to begin with) without water. Peace. :)
I have been saving rain water for years for use around the yard,. It's not that much just about 200 gal.when full.I keep my consumption down.
Salty water would mean that there is a higher amount of solute outside of the plant cells than inside. This, in return, draws water out of the plant through osmosis and dehydrates the plant cells. This is called a hypertonic solution. As an experiment, try to drink salt water for a while. Sure it tastes bad, but what you'll notice is that you increasingly become more and more dehydrated. This is why we don't pour road salt over plants during winter as well.
I heard on NPR that there are some farms in third world countries that actually use tainted water. I'm sure there is a process to filter the water but in the end it is still dirty water. One farmer claimed that he gets more yield by using dirty water than anything else. Especially effective on his bananas. I think its on some farm in south america.
Didn't think we only had 2.5 % freshwater... that gives me worry XD.
she does sound kinda worried and concerned
I wonder if fracking uses fresh water or salt water. Since fracking puts water into the ground that can not be recovered so it doesn't seem like a good idea to use fresh water for fracking.
How much goes to watering grass?
Why does she sound like she's on the verge of bursting into tears?
How about just "other compounds?"
0:43 das not how you use literally
That water droplet graph was not to scale at all.
@Alec McKinney fences can be use as minerals for crops and trees. It is actually isny bad for your health because feces break dowb by bacteria then the trees use that mineral to grow. feces, dead animals and other dead stuff help crops to grow; that has been going on for million of years
What about the water in the atmosphere? Is that also surface water?
water used to produce electricity is also used to grow crops, for human use and of course in industry. something smells wrong in TedEd land
In the future could we purify ocean water efficiently?
Using the periodic table, we can discern, and know experimentally, that Silicon acts like Carbon, making the range for Silicon-based life forms wider, and making it very interesting to see what type of liquid at higher temperatures they would use. But, there is more Carbon in the universe, because it takes less time for stars to create it. And so far as we have observed there is no life without water. There needs to be a compound that acts like hydrogen does with those weak bonds (cont.)
So... i'm assuming we don't have to worry about fresh water for a while... right...?
o~o
why would you think that
"There's no life without it" untrue. But this is about the importance of water, after all. And it is important. Most life on Earth requires it anyways, so.
That's why water is BIG business
not 9.7% missing they went over by .3 % 70+30+.3= 100.3%. i just assumed since surface water is so small they just excluded. But also agree water can be used in more then one event if not consumed such as power and drinking water. This would be hard presentation to make though with water renewal through the water system its hard to really calculate water use and amounts.
طبعاً دائما اريد ان اقول نفس الشئ! بس انت سبقتني :)
What about the Sea? You didn't mention it???
In what way?
How?
Talking about porcentages is misleading. The amount of fresh water in the world may seem minimal in the context of oceans, but is a lot more we will ever need.
2:08 why are you using the Mercator projection on a globe?
wut
her voice gives me anxiety
That's your problem
yes it is
+Samdara I know exactly what you mean, it makes me feel anxious like the person speaking is constantly upset or about to cry. Liza Weil (Paris Geller from Gilmore Girls) has the same voice and I really struggled with that character lol
Ikr? like she's on the verge of crying or is about to pee
Lol
Lol right. I remember that little bit from my middle school science teacher.
who ru replying 2
sorry, i got it confused with the Gall-Peters projection
It would be better of the diagrams are proportional to the percent of the contents. You divide fresh water into 3 parts, but 0.3% should not look as big as 70% .
Because Brawndo has what plants crave! We're scary close to the prediction in the movie "Idiocracy".
Epic
What about living beings? Who much water do all the living organisms on Earth hold in their bodies?
I think some water is not totally treated after domestic usage and so recycled as farming water. Then again, domestic water is just a drop in the bucket.
Hi
about 5
Why can't we have seawater drying beds to convert seawater into salt and fresh water using the sun?
Is there anyone who's watching this video during lockdown? If yes then please like👇.
@Leon Detavernier 🤦🏻♂️😂😂
@Leon Detavernier I can very well understand your condition. Btw is this a homework that you've to complete within the lockdown?
I guess you've never heard of desalinization. Methods have been invented but it's very expensive. Some countries use it... and when the fresh water supply gets stressed, more countries will follow suit.
Many think when talking about water problems like, what are they talking about? Water forms 97 percent of earth! Forgetting the fact it's not all drinkable water.
why not TEDucation?
Not as much as it could. We pollute the water so at some point it gets unuseable :/
do i have to be the one to add that in the US the grass on our front loans we use for aesthetics only in the #1 consumer of our fresh water. yes world, America may be powerful as hell but most people here aren't that smart, the better of us are working on it but we'll see. kinda like the penny, we still use them despite it costing more to make that its actually worth. aren't we supposed to be teaching facts here?
Why is an animation rendered as an interlaced video? The lines really annoy me.
Duuude I had no idea what you're talking about. O__O Layman's terms please. Haha. Anyway, I'm not here to argue or something. But I believe that without water (fresh or salt water), we will all die, plants, animals, humans, everything. If other "periodic elements" can be an alternative to drinking water, then that'd be great. :)
Ohh, no, yea. I'm talking about outside of Earth's ecosystem. Also it's not arguing it's discussing. :3 Oh uhh that's a bunch of Chemistry stuff. There's some nice videos on chemistry education here on youtube. Like crashcourse and khan academy maybe.
why the word " vary"? eh?
doesn't tell when we won't have enough
*run
Why can't people use salt water or dirty water for agriculture
Now I feel scared about what would happen if all fresh water were to be gone...
I know water is a compound of H and O. Cant you see I used his own words? (That's why "periodic elements" is in quotation) Try not to meddle with other people's discussions without reading first. Cheers.
That would be atmospheric?
why cant we just turn alot of the salt water into fresh water by cleaning it and taking out the salt?
0:43 There's nothing quite as ironic as using the word 'literally' figuratively
what about clouds..?
Last time I checked you can’t drink clouds
its more accurate
Science!
Cant help it.
Water! :D
Me
not all over the world, eh!
the voice sounds like about to cry...
in the future i will make my own salt water maker to fresh water
I'm planning on doing that for an engineering project lmao
@@prakh1250 this was 14 year old me but I am 18 years old and I don't remember sending this message i think its cool that your doing this project, keep up the work 👍
@@hlpenguin8278 Thanks! Well it's not really for my OWN engineering purposes, (What I mean by "engineering" is that it's for a school club), but yeah, I am most certainly going to try figuring out a way to solve problems like these.
de-salination plants are expensive and take other resources to runt hem.
it seems she is shy or gonna cry
It is a very very small amount. It may seem like a lot but it is actually not.
We can use any water on Earth, whether it be fresh water or salt water. Of course we would need to desalinate that water, but then we would have a nearly unlimited supply of water. People just don't want to spend so much money on a basic human NECESSITY.
only 8%? That makes me feel alot less guilty over wasting water by taking long showers...