Can 100% renewable energy power the world? - Federico Rosei and Renzo Rosei

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Every year, the world uses 35 billion barrels of oil. This massive scale of fossil fuel dependence pollutes the earth, and it won’t last forever. On the other hand, we have abundant sun, water and wind, which are all renewable energy sources. So why don’t we exchange our fossil fuel dependence for an existence based only on renewables? Federico Rosei and Renzo Rosei describe the challenges.
Lesson by Federico Rosei and Renzo Rosei, directed by Giulia Martinelli.
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[@TEDEd]

Thank you so much to everyone supporting us on Patreon! You are helping amplify the voices of scientists working towards a more sustainable future. If you'd like to learn more about how to get involved, check out our Patreon page: bit.ly/2BRTjYU

[@HarshitSharma-wu3jh]

TED-Ed Have you ever wondered what is above or below earth?... We have searched horizontally around us but I don't think we have searched vertically upwards or downwards...... And if we have then can you please make a video about it?

[@kaziislam2785]

TED-Ed I thought that tar sands gave us enough oil so that by the time the tar sands run out, there’ll be more oil

[@erichernandez4064]

TED-Ed Why cant we just put 3 car batteries in a car and a daylight sensor on the hood of the car to charge the batteries and a fan to keep the batteries from heating up

[@santysquared1677]

Excuse me Mr./Ms./Mrs. TED-Ed, I hope you don't get offended with me asking but can you post videos more frequently

[@santysquared1677]

Thanks for his video so informative OMG I just love it and once again form an 11-year old boy and if you can get me to watch these amazing videos imagine everyone else, keep it up TED-Ed

[@TheFoxiest77]

easy, we just make doors into kid's rooms and get monsters to harness their scream energy

[@user-do5zk6jh1k]

But laughter is more powerful.

[@miguelconstantino-guzman7957]

Good one

[@RikoPsycho]

was this a Monster Inc. reference?

[@handledandle332]

@Aidan Tijerina That's not a woooosh

[@shashavengesayi6055]

Ginger and a Fox 🤣🤣🤣I love that movie

[@manasi6829]

I binge watch ted-ed more than Netflix whats wrong with me?

[@LANCEL0T]

average human nothing, you just spent your time better than most of us.

[@abstraxxt227]

LOL i do the same but i don't have Netflix so i go online

[@theyeening]

You wanna be smart.

[@zeath_zolaries3508]

average human coz Netflix is producing bad anime movie adaptation i guess

[@gregg6077]

Boring

[@sethgrasse9082]

Whoa! Turning solar energy into chemical energy! That sounds so advanced! Oh wait... Every plant on Earth does that.

[@noah_lot2842]

Seth Person Technically, they only use solar energy's heat to split water into free hydrogen and oxygen atoms to make glucose. They don't change solar energy to chemical, and even if they did it would be far too slow for our energy needs.

[@sethgrasse9082]

Nicole Barajas I know. Just joking around. All though, I would argue that glucose stores chemical energy. This is the basis of cellular respiration.

[@aliasrehbar9693]

Our computer is based on 1 and 0. There's no such thing as "too slow".

[@WadcaWymiaru]

Better is use nuclear energy "more" directly...

[@bradreed2001]

👉 exactly

[@jakubzagrodzki6037]

„scientists are working on changing solar into chemical energy” plants: am i a joke to you

[@masternobody1896]

yeah we could use lava or plants to make energy

[@horse24draws9]

MASTER FAZE Try hard gamer lava?

[@professional_silent_trumpe1540]

Problem is they aren't that efficient

[@umadadhich3866]

U guys are thinking same as i thought about making howeboard using earths magnetic field 😭😭😭😭😭

[@aditisk99]

@@umadadhich3866 And I didn't even think that.

[@jltrack]

At my house, we have solar panels installed on the roof and they produce nearly double the energy we consume. Essentially all of the excess solar energy is sent back through the local energy supplier’s power grid. If a regular suburban household can provide its own power, the same can be done elsewhere on a larger scale.

[@Tyrantteemo]

Jane Leelavathi how many panels do you have? How much is one?

[@rodrigog2805]

I have 5 panels and I generate around 5 to 8 KW each day, and I have a steady consumption of 5 KW daily

[@alvinwonder2180]

Solar panels are more expensive than normal electricity and it takes a long time to break even, that's why most people don't purchase solar panels. To make it a on larger scale, I think the government should help to install the solar panels and subsidize a portion of it. This way people are accepting of the idea.

[@travisallen9689]

Jane Leelavathi In places like cities, the solar panels required to generate all of the electricity the city consumes is greater than the area of that city. Not to mention it would be astronomically expensive.

[@thatweirdfeelingpart3767]

Dat Boi Fusion we are extremely close to solar panel windows that would allow for buildings to be powered on their own

[@suntzu2102]

THIS CHANNEL DESERVES AN OSCAR FOR ANIMATION NOT ONLY IN THIS VIDEO BUT IN EVERY VIDEO IT SURPASSES IT'S PREVIOUS ANIMATIONS

[@zoharnakash7361]

2:12 An optical illusion you can see dark dots inside the white dots around your vision, but once you look directly at the dark dots - they are gone

[@katherinex9166]

no

[@kennethsummers6857]

Some of the dark dots in the white dots are actually there.

[@bobsmithy3103]

Ummm, can't see it.

[@024dogtop]

0:07 Earth isn't spinning. The map is sliding or the pinhole is moving.

[@ketavis3880]

Zohar Nakash that's actually a pretty good illusion!

[@AlexandraShh]

Nothing was said about availability of lithium and other minerals, that are needed for building solar and lithium batteries. Unfortunately, these resources are also scarce.

[@pikistikman]

Aleksandra Shhh Those chemicals and metals are also quite bad for the earth

[@susangoodman4925]

yes, and that mining them involves creating radioactive lakes in China and child labor in the Congo.

[@meh23p]

There are other kinds of batteries than lithium and other kinds of energy storage than batteries. We do need lithium and cobalt for electric cars, though. But there is plenty of potential in reclaiming those materials.

[@primoent8441]

Oil is actually a renewable resource and in comparison to the materials needed for solar, it's a much viable one.

[@bradenpinvidic4126]

Nothing was said about getting and refining said materials, nor about the waste or negative environmental impact. Of course, referring to both solar, wind, and batteries.

[@takarasdream2597]

I’m seeing 2 years comment..I’m here 2020 cause of quarantine. Please tell me I’m not the only one 😭😂

[@alexaperez429]

Takara’s Dream 259 your not the only one 🥺😂🤣

[@sadsamuraiman1855]

Hi

[@caca-ir9dy]

Not the only one 😜

[@intheendtherewasonlybread1315]

let me guess you also were sent bc of homework ??

[@Gebieter]

kzbin.info/www/bejne/jHirkmmOrK-ia5Y

[@f_e_r_n1255]

I'm so happy my science teacher sent me this to study off of instead of some 30 minute documentary

[@thebigm4]

@FloadingBar If we did that we would all be in the same mess that Texas and California are in right now. Renewable Energy is very unreliable and very costly.

[@f_e_r_n1255]

@@thebigm4 I didn’t share my opinion on the subject, I was simply thanking the creators for keeping this short and sweet. So what I’m politely trying to say is: I didn’t ask I don’t care :)

[@diegopills]

Yea doing this for AP Human Geography

[@gettriggered_ian3269]

@@diegopills Where do you live?

[@nusratparveen82]

Same

[@NoelHasFeathers]

We discussed this topic in our Ecology and Energy lecture just a few weeks ago! It really pushes young students to be innovative when faced with such a troubling problem. Thank your for beautifully animating our lecture. You guys are the best 💕

[@giuliamartinelli7296]

thanks for appreciating the animation :)

[@JaiKrishna787]

Your animations are always awesome and beautiful. Great work Ted-Ed 👌👌👌👌

[@giuliamartinelli7296]

THANK YOU :)))

[@vanivanov9571]

And they're always propaganda, trying to move the world back to the stone age of uneducated serfs. They want us to be starving like the Germans, who can barely afford their energy (despite it being something like a mere 5% of their energy).

[@antonwerner8054]

Van Ivanov I'm German and I don't know where you get your facts from but we're most definitly starving to get our energy. Renewable energy is the only way to go and on the long run way cheaper thas goal, oil etc.

[@eliasalvemini4424]

His animations are bad

[@dontspikemydrink9382]

@@vanivanov9571 lol bs

[@mad_titanthanos]

0:47 That animation is so surreal, almost like a utopia that gives a happy vibe. It's like a child's painting from school.

[@trebelojaques458]

The voice . I've been hearing this for years and I still love it... It's peaceful

[@raduantoniu]

Very nice video! Thanks! Can anybody tell me which battery can store 2.5 MJ/kg? From my research, I found that the best lithium-ion batteries today can store only about 1.1 MJ/kg.

[@baileychilds7906]

Hydrogen batteries.

[@dawsonhenry5558]

That's kind of the idea- we need more time for innovation

[@vijayathaker552]

Atomic battery

[@pronelason]

ni-63 atomic battery maybe?

[@lukomorphisidius946]

@@pronelason there very expensive, aren't they?

[@MaximusWild]

"Deserts are far away" -not here in Australia.

[@etiennelamole9565]

SO WHY DON'T YOU UTILIZE THEM 😭

[@anontill5302]

@@etiennelamole9565 Because they are far from dense cities usually situated on the coast. The desert is right in the centre. That's some long cables needed.

[@youssefkandeel3667]

Yeah it's relative, here in Egypt it's basically a desert.

[@blabla-rg7ky]

@@anontill5302 but, but... hear me out! Deserts may be far from cities, but chinese are not. Chinese are all over your country and goverment, so why not build a long cable made out of chinese and transport the energy through them?!?

[@michellemarie1197]

Also here in the US we have like 4 or 5 states that are deserts.......

[@santysquared1677]

Loved the video, I just love it when your video suddenly pops in my notifications, it is music to my ears and the way your video are so informative and helpful but so interesting at the same time that even an 11-year old boy like me would want to watch and look how much I am learning it's amazing thank you so much

[@TheCrutchbrigade]

Young Sir, your crafty use of the English language is outstanding for your age. If I may, I'd like to offer you some advice. Research "run on sentences" and you will see what I am talking about. Use DuckDuckGo.com because Google is a company that doesn't protect your privacy and sells your information for their gain. DuckDuckGo isn't like that. It's like cleaning a window. Also, a VPN, Virtual Private Network, such as Nord VPN (that's who I happen to use) prevents the paparazzi from photographing your data in the limo. It's the window tint. Thank you for being awesome. It's people just like you that make people just like me happy to enlist in the military; to break our bodies down, so y'll, can live the American Dream and we will rally up when we get back. Thanks for being one of the people who help make America awesome little buddy! I look forward to seeing what people like you make America into for me as I age. -US Army 2006-2011, -Signal Corps, -United We Stand! -Michael Happy Holidays! -US Army 2006-2011 -Signal Corps -United We Stand -Mike

[@maxingalsbe2776]

bro quit glazing

[@katitax508]

I need to say that I absolutely love this video, TedEd is the best ❤️

[@rajatsoni6005]

I was wondering about it since my 8-9th class when I first studied Solar Cooker and Heater and Solar Cell... Now I got the answer.... Thank you very much ... For such brainstorming answer to the mindbending problem...💖💥

[@hasnain9654]

As always, nice and easily understandable video! Thanks for giving information and animation is TOO EXPENSIVE 😁

[@nikhilkumar3467]

I love your videos man, they are just awasome

[@vanivanov9571]

Lying is awesome? Really, they told you oil would run out in 50 years, *fifty years ago.* But I guess well-made propaganda is an art of itself.

[@vanivanov9571]

​@@syox Huh? Isn't it obvious? I'm referencing the fact oil was, officially meant to have run out by now, I think twice. And the same goes for all the other laughably apocalyptic predictions. More than that, the ozone layer was meant to have been destroyed by now, and many scientists agreed with Al Gore that, "The Children won't know what snow is." Instead, kids FROZE in Texas. They had to change the name from Global Warming to Climate change, because their false predictions were so embarrassingly wrong. All of them... polar bears are "thriving" a recent study reckoned. God has made sure they can get nothing right. The flimsy computer model has proven laughably, desperately wrong, as well. The men of the future always laugh at the idiocy of the men of the past--and the same goes for people with enough braincells to read recent history.

[@santiagocabarcas6389]

I love Ted-ed so much, I have actually binged countless talks on the app

[@tipgame2108]

I love your annimation and i'd like to know which logiciel you use to create these animations ??😄

[@JohnJohansen2]

0:06 Earth animation is "rotating" the wrong way!

[@sankalp2520]

Yeah it's rotating east to west

[@Theronharp]

Love this! Isn't a decent alternative to liquid fuels converting to a renewable liquid fuel source? Such as algae based biofuels? This product has seen potential even used as jet fuel.

[@gh0st208]

love the art you guys are making😁

[@SuperUniverse31]

Thank you TED-ED

[@ausarthevile8755]

The problem with batteries is that lithium is almost as limited as oil, if the entire world used it we’d run out within 100 years

[@lollb454]

Matthew Ginn batteries can be recharged

[@ausarthevile8755]

Duka Duka They can also be destroyed meaning replacements need to be made and theirs the continually increasing population leading to more production and eventual shortage of lithium

[@moensbruno]

Nah we're gonna recycle it (tesla is already doing that), besides in 30 years we're gonna have all sorts of different types of batteries. Nonexistent problem

[@aedwa021]

One of the reasons I'm interested in compressed air as an energy storage system, though it looks like it's only got 10% of the Joules/kg as Li batteries. BUT! it doesn't have that issue with the rarity of lithium. You can make tanks out of carbon fiber.

[@ausarthevile8755]

Andrew Edwards Compressed air is an interesting idea but I think everyone can agree fusion reactors are the future of energy China certainly thinks so

[@albinkx4027]

We value your works,, keep giving us more informations

[@reyi3370]

Helped me so much, Thank you ^_^

[@abhierambandaru9647]

All tedx videos and talks are awesome they teach me many things

[@brianliang3521]

The general public actually shocks me at how much they can say without doing actual research

[@gv5884]

TED-Ed, please make a video of "Why should you read Machado de Assis", and his books "Dom Casmurro" and "Memórias Póstumas de Brás Cubas"! It would help so much for people to know this great writer

[@yikesforever6006]

Giovana Verzignassi become a patreon is more likely for them to see your request.

[@gv5884]

Obed Sierra How do I become one?

[@Linck192]

why do you want people to read those books?

[@vornamenachname2727]

Giovana Verzignassi Use the link at the end of the video

[@gv5884]

Vorname Nachname Thank You! I hadn't noticed it

[@sivadrakshrapu5911]

Still i couldn't understand how you are making animations. Great job TED-ED

[@thearax-man7912]

What a really great video and super easy to understand.

[@prismus6520]

I'm interested in such topics! I'm wondering if you can make more episodes about energy and how to use it in everyday life. Nice work, TedEd! Love it!

[@fogo3558]

1:08 the gears are turning in others directions

[@rajivpokharel88]

Amazing video.....simple yet brilliant animation...

[@snowy4722]

this is a really nice video thank you for making it it was very helpful for chemical engineers

[@aedwa021]

I'm a big fan of compressed air energy storage, though estimates are apparently about 1/10 the MJ/Kg as the Li Ion batteries mentioned in the video. Still, the creation of the battery will have a larger footprint than the creation of a similarly weighted tank. But I think the real solution (or at least, the best stop-gap while we wait for solar to sufficiently advance), is nuclear. There's a lot of fear of nuclear power, but it's really safe, especially when you compare it to fossil fuel energy production.

[@DragonForce1393]

3:17 "...lose 6%-8%" but for which distance?

[@NC_Isro_64]

250 meter I guess

[@humbertini900]

Great insight into the build just subscribed and it’s a nice compact turbine I also have built a homemade 650 watts wind turbine, a treadmill motor turbine and a little but powerful ametek 30v turbine and built 2 diy solar panels, be careful in high winds one of my first turbines blew up 😕and now have only 2 wonderful turbines working daily 😊it’s very satisfying watching those things working, keep up the good work buddy 👍

[@lola3324]

This was a real helpful video

[@fatunicorn98]

Thank you for the realistic look at the challenges of fueling our societies. One major fuel that is almost never talked about is thorium. It is not nearly as dangerous as uranium and there is enough thorium to power a large percentage of the planets fuel needs for a thousand years.

[@tealblade2994]

4:43 well, it looks like plants got a billion year head start on that

[@josemora9477]

Loved this video it makes a lot of sense.

[@sustainability149]

TED-Ed always make informative videos on these topics

[@okas425]

ARE U KIDDING ME I WISH THIS WAS UPLOADED YESTARDAY SINCE THATS WHEN OUR CLASS HAD A TEST ON THIS

[@mrdubbs561]

Who else is here because of ur teacher

[@TheMoumou120]

Omg i am dying from boredom bro

[@ShaperOfDestiny666]

😂😂😂

[@MFKEdits_]

Not me

[@W_GOATROU]

me

[@TheFinalBoss7]

Meee

[@alparslankorkmaz2964]

Nicely explained.

[@youtubeaccountparriwi]

Great Video, thanks!

[@kdotin]

Animation work is simply the best on TED-ex, totally easy to understand and creative.

[@jossgoyanko7006]

5:00 "[to develop clean energy alternatives] we need powerful incentives." You mean, more powerful than the continued survival of modern civilization?

[@princessdio3686]

You'd think that'd be enough

[@bobsonbobbybobson6888]

Its not because the average human mind doesnt focus about the long term and likes to run away from doomsday prophecies. Its sad really.

[@fabiolagraceffa9261]

Thanks for the information!!

[@whenitcounts8657]

Wind, solar, biomethane (like kelp- good for fish and food too) and water right? Saw a vid on fb

[@bobmiller3627]

I'm not sure how many historians there are here in the comment section, but it seems like to me that the modern world, and the United States in particular, have set in motion a chain of events that may lead to a total "systems collapse," in the very near future. "Systems collapse" is what happened to the western Roman empire in the 5th century, it's what happened to the Soviet Union in the 1990's, and it may happen to the United States and many other industrialized nations in the next few decades too. We've built a world today that's utterly dependent upon trade, both intentional and domestic. And this trade is absolutely essential for keeping international conflicts from springing up, it keeps our economies rolling, people employed, and it's a huge web that effects almost square inch of this planet today. And since literally ALL of that trade network relies upon petroleum powered transportation equipment ...well, you see where this is going right? We currently have no renewable way of powering the transportation infrastructure that this world relies upon everyday, and we've only got a few more decades to figure that problem out or we're fucked. A similar systems collapse event happened back during the end of the Bronze Age, and is known today as "The Late Bronze Age Collapse." In a period of only about ten year's time, TEN YEARS, every single kingdom located in modern-day Egypt, Greece, Cyprus, Crete, Anatolia (Turkey), Israel, and Syria was destroyed. Their societies all relied upon using bronze farming implements, like hoes and horse-drawn plows, to be able to feed their populations at the time. And when the bronze, a mixture of copper and the extremely rare element tin, started to be depleted to such an extent that bronze farming equipment could no longed be replaced affordably enough, reliably enough, or rapidly enough, the entire civilization, along with all of their trade networks, collapsed before they could find a replacement for their bronze. And since today every single person in the modern world relies almost solely upon petroleum powered agricultural equipment to keep us affordably clothed and fed, we too may in for a systems collapse event like the ones suffered by so many ancient nations that came before us.

[@CR7Ashironaldo]

what about nuclear energy? small amount of nuclear material can generate electricity for years and and the waste though radioactive can disposed with effort because of low amounts by sealed containers or sent to space .

[@MerthanE]

Actually it can't be sent into space but yeah, it's the best option.

[@LKAChannel]

Sending nuclear waste into space makes absolutely zero sense at this time and in the foreseeable future, it's way too expensive and energy-consuming

[@GRBtutorials]

You all forget (or don't know) that there are two types of nuclear energy: the one we use today because it's the easiest one to get right (fission), but that produces waste and can cause catastrophic accidents; and the one who's still not advanced enough since it needs more energy than it gives (fusion), but is pretty clean and is very difficult for it to produce an accident. Fortunately, fusion is viable (just look at the Sun [not literally, please], it uses fusion and has been producing lots of energy for the past 4500 million years, the problem is to make it compact enough that can be on Earth).

[@nolan4339]

You don't need millions, or even thousands of years of storage. With advanced Nuclear technologies where you fission all of the dangerous long lived radioactive elements, you are left with only fission products. The fission products will mostly all have decayed to background levels of radiation within 300 years, and most of them will have decayed much sooner than even that. Also, if you are using these advanced nuclear techniques then you are using the nuclear fuel dozens of times more efficiently, and so are generating dozens of times less waste per unit of energy produced than current reactors, in an industry that already produces very small amounts of waste.

[@valdemarhoejlund6506]

Not renewable

[@EmmalynnCynefin]

Can we just appreciate the animation style? Lowkey love it

[@Nongdamba500]

Thank you very much Ted team.

[@MehdyDesertFox]

renewable energy requires fossil energy. At least for the moment.

[@simon5119]

I honestly can't believe that a TED-Ed video on renewable energy did not mention the discovery or advance in technological ways of harnessing nuclear fusion. Even though nuclear fusion isn't renewable, it's the cleanest possible form of energy. Don't get me wrong, i loved this video and found it very informative. Well done again TED-Ed!

[@beppson9201]

Based

[@ace-dj1dm]

They didn't mention it because nuclear fusion isn't renewable

[@NauztaFagts]

Amazing video loved it ❤️

[@businessenglishwithboniely4018]

Great animations!

[@Jarod-sm5rf]

I’m addicted to ted-Ed who’s with me?

[@LC-uc4hq]

Me

[@kishanchauhan2790]

What about chi? The energy that flows in the universe as shown in kung fu panda

[@alonsojimeanch]

I'm fascinated about the animation in this video :D

[@anandsuresh97]

Its excellent Can you pls upload a video about transistors

[@GGSLM]

The way our civilization works makes all this SOOOOOOOOOOOOOOOOOO complicated to do

[@robbertvanoosten2530]

Concluding, the renewable energy pipe dream is never going to happen. Let's shift to nuclear energy and develop nuclear fusion!

[@Bu6v]

I wish & pray such days come soon.

[@phunguyenhoang211]

Where can i learn to create such a video like this one? It is well presented.

[@FallenEpic]

Tidal power would be a nice boon, I think. Seeing as most people live near the ocean already it makes it easy to give them power efficiently and it can provide power on a cycle similar to solar (not constantly but daily on and off). Also I'm in favor of people just using more mass transit instead of continuing to use inefficient private transportation. *Having said all that* these are not solutions that work for everyone but they're a nice start right and would extend how much longer we can use fossil fuels as a crutch before more universal solutions present themselves.

[@kyleeskreations8237]

I've learned more in this video then a whole year of school

[@joshuakelly1846]

2:12 sneaky optical illusion

[@THEGAMER-cc2eq]

2:56 can power be generated? or it is just transformed from one form of energy to another _confused_

[@vincemarenger7122]

Yes, energy is always transformed from one form to another. Only exception is nuclear energy, converting mass into energy respecting e=mc^2

[@MrDamojak]

2:12 Dots, dots, dots, dots...

[@SilverGamingFI]

*WE NEED MORE DOTS!*

[@sindhuamuralidharan1164]

A very informative video. It also encourages us to utilize solar energy at the household-level. If an entire airport (Cochin International Airport) can be fully solar-powered, atleast it can be done at smaller levels.

[@J-rex980]

Its an easy equasion how much energy of one type does it cost to produce a greater energy output.

[@YamenNazer]

OMGGG I love TED­­­­­­-ED

[@DeependraTube]

Nuclear power supplemented by Solar, wind, biomass and tidal power is the solution for future.

[@sparklewithtrishpparklanej6468]

tidal power, what about the poor fishes in the water.?

[@robinsss]

@@sparklewithtrishpparklanej6468 make filter screens that prevent the fish from getting inside hydro devices

[@robinsss]

@ProgramKing nuclear plants take a long time to build and cost a lot to build

[@michazajac5881]

@@robinsss nothing economy of the scale can't sort. Modular design makes them both cheaper and faster to build.

[@robinsss]

@@michazajac5881 give me some proof

[@archlittle6067]

What's that phrase that starts with "N" and ends with "uclear power"?

[@GRBtutorials]

Unfortunately, it seems that 2 accidents, along with the fossil fuel industry, did a very good job of convincing people, even scientists, that nuclear fission (let alone fusion when available), one of the safest and cleanest energy sources is somehow worse than fossil fuels. But that’s to be expected, after all, more people are scared of airplanes than cars, despite the former being the safest mode of transportation. It’s just that the accidents are more spectacular when they happen.

[@AbdulGoodLooks]

@@GRBtutorials Kurgesagt has a 3 very good videos on Nuclear power

[@archlittle6067]

@@GRBtutorials Actually, more workers have died constructing and installing solar panels on roofs and wind turbines than have ever died in nuclear incidents. www.osha.gov/dep/greenjobs/windenergy.html www.cdph.ca.gov/Programs/CCDPHP/DEODC/OHB/FACE/Pages/Solar.aspx

[@sankalp2520]

But we have very limited amounts of uranium and similar elements which r used in nuclear reactions. Moreover it's not a renewable energy as it consumes Uranium

[@archlittle6067]

@@sankalp2520 Breeder reactors produce more fissile material than they use: en.wikipedia.org/wiki/Breeder_reactor

[@joshzbuk8258]

very helpful ty

[@avididni873]

I'm going to take engineering major this year. Hope I can be one of the people who solve this problem!

[@dt610]

Ted ed best channel.

[@vanivanov9571]

In terms of pumping out outdated propaganda consistently and attractively, sure. Interesting that now, about 50 years after the last time they said, "we'll run out of oil in 50 years!" they're saying it again.

[@fleuron9670]

Van Ivanov Ted talks only existed for 31 years

[@Thurgor_Supreme]

Long story short, we need a nuclear renaissance and we need to use it's energy for hydrogen fuel cell production. Renewables and lithium batteries simply won't be enough (without magic technology that we may never obtain).

[@rozaepareza]

Nuclear energy can also be used to synthesize hydrocarbon fuel, which is carbon-neutral since it is created from carbon dioxide pulled out of the air.

[@invernessfan3017]

Wrong. 98% of Norway's electricity comes from hydro electricity. Hydro electrixcity, is safe, tested and reliable.

[@Thurgor_Supreme]

@@invernessfan3017 LMAO!! The USA is NOT Norway! They have a small population, small country, and ideal topography for hydro. It's too bad we can't run electric plants on dream-fuel. You knuckleheads would give us an infinite power source.

[@bradenpinvidic4126]

@@invernessfan3017 Well for starters that wouldn't exactly work for the US since we have a lot more people. And we likely wouldn't have enough space given the requirements. Same with wind and solar, they're simply too inefficient. If the US were to completely rely on wind and solar, it would take up over 25% of the landmass in America. We should be investing in Nuclear energy, specifically Thorium plants, since they are safe, small, and more productive

[@drabberfrog]

@@invernessfan3017 hydroelectric is the most dangerous form of renewable energy

[@antonioiturralde6048]

2'09''. Where on earth could we build a surface that spans several hundred thousand (square, as far as I know) kilometers? Exactly how many are "several"?

[@jeffschuster3309]

I love this video. It is a good explanation for a grade school aptitude to understand the general challenges of renewable energy. I am one of the engineers working on this problem... I have been for the past 30 years.

[@ShafakTan]

What about micro grids? No need to build huge infrastructure. Just 5 kw solar and a powerwall is ok for most high cost electricity areas. Such as islands.

[@pooshpoosh9232]

Hmm yep nice observation , they also tend to be very windy , problem with solar energy is when you get a cloudy weather streak , wind energy has the same problem , also sea water power depends on sea power that also changes

[@magellanicraincloud]

Safak Tan Ozkan micro grids will be a part of oir energy future I am sure. They are hard, though. With a very large grid you have very distributed supply and equally distributed demand. On a micro grid it is far harder to balance supply and demand, especially when using renewable sources. The current difficulty with adding distributed solar to the large grid is they weren't designed for that eventuality. Monitoring and management for loads of solar panels on loads of houses were not built in to the grids. My guess is that micro grid technology and management systems will be merged into large grids to form a grid of interconnected grids. This will greatly simplify balancing supply and load calculations. Disclaimer: All of this is just a semi-educated opinion.

[@vanivanov9571]

A wind-farm on an Island would probably kill it's entire native bird species within a decade. Same for solar farms large enough to support cities. At huge costs, you'll be able to have electricity on a good day, for part of the day. I hope you're not having heart surgery when the power goes out.

[@ShafakTan]

Just throw in a bunch of batteries into the equation and you solve all the balancing issues :)

[@aironquetulio3270]

Yeah the only real problem is that supply is not equal throughout the day unlike traditional sources but like Safak Tan Ozkan said we just need batteries to store the excess power

[@peterrodrigues1603]

I like many forms of energy production, including coal and oil, but I do have a concern over nuclear fission and was wondering what you all thought about it: I'm not afraid of nuclear meltdowns {for the most part}...what concerns me is how long radioactive waste on average must be kept isolated before it is rendered 'safe'. Thousands of years are a minimum no matter the isotope type. This seems very much too large a risk. :( Can materials actually last that long where humidity and oxygen are present, or are they stored in a vacuum? How do we know the lead-or-other barrel linings will not become radioactive themselves over such a long time? Thanks in advance for every genuinely thoughtful reply in answering my questions! :)

[@milan5949]

I can't stop watching, help 😂

[@CharlieHNgo]

This video is awesome 👏

[@fabiantechnogreen8409]

Great video!!! I work with alternative energies in Colombia. It's pretty hard. In spite of, we haven't advanced because government is quite corrupted. Ww need help.

[@infinitepossibilities2614]

Yes sir... Can you tell me exactly what your org. Does?

[@justintaylor375]

Nuclear: Please stop ignoring it.

[@user-wh1qd2ht1f]

great job😃

[@ronith24]

Thank u

[@minimanofiron2501]

oil- early squad. i messed up my speech/type.

[@AWESOMEEVERYDAY101]

MINIMAN of iron plz see my channel

[@samgdotson]

There are more issues with variable renewables (solar+wind) than are mentioned here, like variability. I don't think it's possible or even desirable to have 100% renewable grid. Many of these issues are easily addressed with nuclear energy, which has its own unique problem set, but would solve the climate crisis.

[@8Dpor]

My listening test in university this so good text I like this

[@sarahasmr5192]

Nice explanation