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zakruti.com » Knowledge, science, education » TED-Ed
How much land does it take to power the world?

How much land does it take to power the world?

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Rating: 3.3; Vote: 3
Explore the sustainability of fossil fuels, nuclear power, and renewable energy and how much space each of these power sources use. No matter how we make electricity, it takes up space. Coal requires mines, and plants to convert it into electricity. Nuclear power takes uranium mines, facilities to refine it, a reactor, and a place to store the spent fuel safely. Renewable energy needs wind turbines or solar panels. So how much space would it take to power the whole world? Explore the sustainability of different power sources. Son: Climate change is alarming these days when natural catastrophe become harder and harder every year, therefore, this topic is definitely helpful for everyone, and me. I am really into this series because it helps me understand renewable sources of energy we are using and the problems along with it, not all the approaches are perfect, even wind and solar energy. I'm looking forward the next videos, love it
Date: 2021-03-16

Comments and reviews: 9


Can someone explain to me why the solar panel one is so expensive in space? I mean, I am not insane. We had one solar panel in our house (not two, a stone carried by the wind during a storm broke the second one) and it was enough to power the fridge if we don't plug the TV and it was enough to charge our phones as well as the fridge. Also, we lived in the city? The thing with solar panel is that they can easily be put in cities. And sure, the desert might be hotter but let's not pretend we somehow forgot what happened to glass skyscrapers during summer. They can burn cars! Somehow we cannot redirect this heat toward solar panel? And idk, we can easily place them on the top of every building in a town, then maybe it should be OK? Plus, it would make the maintenance easier bc people will take care of their own solar panel if given a good manual. I mean this is how we did it. But my experience might not be universal. If anything, it might prove that those things are also super breakable so I don't see how putting them in the deserts, with storms and rocks and no people around to repair them is a better idea.
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4: 11 Other places like the US have the resources to get almost or all of their electricity from renewables. Error: data not found.
talks about mining for uranium ore and coal deposits but fails to mention the mining for rare earth minerals for solar voltaic cells or the need for sulphur hexafluoride (one of the worst greenhouse gases) in wind turbines.
Take a page from the surprisingly not irradiated French; nuclear is the only way! Don t worry about waste and stuff. we can get rid of it with breeder reactors! Which the West hasn t developed since the 60s. But don t worry! Russia finished building a successful one in 2016 called BN 800! Wait. (checks Wikipedia page again. they started construction in 1983.
Gosh, I m just one big pit of disappointment aren t I?

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I think it s important to note that nuclear energy only takes up the amount of space it does for the amount of energy it produces because we only use uranium as nuclear fuel, which is highly inefficient compared to what other nuclear fuel options, like thorium has to offer - which uses only about 1/5 the land that our current uranium-235 reactors use
And in case you were wondering, the ONLY reason for why we don t already use thorium to produce energy instead of uranium is because the radioactive byproduct that is made from the fission of thorium cannot be used to make nuclear bombs due to it being a more stable element

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I read Solar requires 350x-450x more land than natural gas while Wind is about 450x- 550x more land than nuclear. Also Solar requires 16x more material in the form of cement, steal and glass than Nuclear, it also produces far more waste in the form of E-waste which is toxic stuff that is not necessarily fully recycled unlike nuclear and speaking on the new breeder reactors very little waste produced. Not to mention the rare minerals required for wind and some components of solar
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Nuclear is literally 3. 5 deaths every 14 years in the most pessimistic approach, how much safer do you want it to be sir? Travelling wave reactors can use our current uranium waste and some msrs in development can use no need to be refined thorium which due to high temps can be used for heating, desalinization, etc. Want to see the us powered on renewables? look at california! I never quite found the whole idea of blackouts because theres not enough wind or sun as fun.
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Solar also doesn't really monopolizes space much. If you've got a room on your home, you've got space for solar. According to a research from the Department of Homeland Security, there is enough space just on roofs to produce 40% of the electricity we need. We could have even more is we also build solar panel canopies over parking space. That's a really large chunk of our energy needs we could meet without requiring any additional space.
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I recently saw an article where Green peace advocate had vandalized an parked/stored Air France 777 in France.
What they really should do is throw their phone, TV, computer away (not use any power) and not living in a house, maybe also grow their own food (Power, Building, Agriculture all have bigger impact than transport)

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Most people who advocate for cleaner energy always propose solar, wind, and water generators, but nearly none of them suggest nuclear. Nuclear isnt as scary as it sounds. Everyone mentions Chernobyl, but we arent the USSR. People say nuclear waste, but the waste CAN be recycled for other purposes up until it no longer emits radiation.
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Devices keep taking up less power all the time. Solar energy just took a big leap ahead in efficiency and continues to become more affordable. They can go on every rooftop. I think the only problem we have is keeping the oil and coal industries from blocking it and finding better batteries.
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