Are Electric Cars Really Green?

author PragerU   3 год. назад
1,372,361 views

16,474 Like   9,848 Dislike

Can We Rely on Wind and Solar Energy?

Is green energy, particularly wind and solar energy, the solution to our climate and energy problems? Or should we be relying on things like natural gas, nuclear energy, and even coal for our energy needs and environmental obligations? Alex Epstein of the Center for Industrial Progress explains. Donate today to PragerU! http://l.prageru.com/2ylo1Yt Joining PragerU is free! Sign up now to get all our videos as soon as they're released. http://prageru.com/signup Download Pragerpedia on your iPhone or Android! Thousands of sources and facts at your fingertips. iPhone: http://l.prageru.com/2dlsnbG Android: http://l.prageru.com/2dlsS5e Join Prager United to get new swag every quarter, exclusive early access to our videos, and an annual TownHall phone call with Dennis Prager! http://l.prageru.com/2c9n6ys Join PragerU's text list to have these videos, free merchandise giveaways and breaking announcements sent directly to your phone! https://optin.mobiniti.com/prageru Do you shop on Amazon? Click https://smile.amazon.com and a percentage of every Amazon purchase will be donated to PragerU. Same great products. Same low price. Shopping made meaningful. VISIT PragerU! https://www.prageru.com FOLLOW us! Facebook: https://www.facebook.com/prageru Twitter: https://twitter.com/prageru Instagram: https://instagram.com/prageru/ PragerU is on Snapchat! JOIN PragerFORCE! For Students: http://l.prageru.com/29SgPaX JOIN our Educators Network! http://l.prageru.com/2c8vsff Script: Are wind and solar power the answer to our energy needs? There’s a lot of sun and a lot of wind. They’re free. They’re clean. No CO2 emissions. So, what’s the problem? Why do solar and wind combined provide less than 2% of the world’s energy? To answer these questions, we need to understand what makes energy, or anything else for that matter, cheap and plentiful. For something to be cheap and plentiful, every part of the process to produce it, including every input that goes into it, must be cheap and plentiful. Yes, the sun is free. Yes, wind is free. But the process of turning sunlight and wind into useable energy on a mass scale is far from free. In fact, compared to the other sources of energy -- fossil fuels, nuclear power, and hydroelectric power, solar and wind power are very expensive. The basic problem is that sunlight and wind as energy sources are both weak (the more technical term is dilute) and unreliable (the more technical term is intermittent). It takes a lot of resources to collect and concentrate them, and even more resources to make them available on-demand. These are called the diluteness problem and the intermittency problem. The diluteness problem is that, unlike coal or oil, the sun and the wind don’t deliver concentrated energy -- which means you need a lot of additional materials to produce a unit of energy. For solar power, such materials can include highly purified silicon, phosphorus, boron, and a dozen other complex compounds like titanium dioxide. All these materials have to be mined, refined and/or manufactured in order to make solar panels. Those industrial processes take a lot of energy. For wind, needed materials include high-performance compounds for turbine blades and the rare-earth metal neodymium for lightweight, specialty magnets, as well as the steel and concrete necessary to build structures -- thousands of them -- as tall as skyscrapers. And as big a problem as diluteness is, it’s nothing compared to the intermittency problem. This isn’t exactly a news flash, but the sun doesn’t shine all the time. And the wind doesn’t blow all the time. The only way for solar and wind to be truly useful would be if we could store them so that they would be available when we needed them. You can store oil in a tank. Where do you store solar or wind energy? No such mass-storage system exists. Which is why, in the entire world, there is not one real or proposed independent, freestanding solar or wind power plant. All of them require backup. And guess what the go-to back-up is: fossil fuel. Here’s what solar and wind electricity look like in Germany, which is the world’s leader in “renewables”. The word erratic leaps to mind. Wind is constantly varying, sometimes disappearing completely. And solar produces little in the winter months when Germany most needs energy. For the complete script, visit https://www.prageru.com/videos/can-we-rely-wind-and-solar-energy

Here's Where the Juice That Powers Batteries Comes From

Ashlee Vance explores lithium mining in Chile’s Atacama Desert. Watch the full episode of 'Hello World: Chile': https://www.youtube.com/watch?v=ii1aMY-vU70 Like this video? Subscribe to Bloomberg on YouTube: http://www.youtube.com/Bloomberg?sub_confirmation=1 And subscribe to Bloomberg Politics for the latest political news: http://www.youtube.com/BloombergPolitics?sub_confirmation=1 Bloomberg is the First Word in business news, delivering breaking news & analysis, up-to-the-minute market data, features, profiles and more: http://www.bloomberg.com Connect with us on... Twitter: https://twitter.com/business Facebook: https://www.facebook.com/bloombergbusiness Instagram: https://www.instagram.com/bloombergbusiness/ Bloomberg Television brings you coverage of the biggest business stories and exclusive interviews with newsmakers, 24 hours a day: http://www.bloomberg.com/live Connect with us on... Twitter: https://twitter.com/bloombergtv Facebook: https://www.facebook.com/BloombergTelevision Instagram: https://www.instagram.com/bloombergtv

Top 10 Biggest Design Errors Engineers & Architects Made

Designing things is hard. You must go to school for years doing un-fun things like math and physics to become qualified to build most things professionally. And because humans are humans and not calculators, mistakes are bound to occur. In this video I’ll show you 10 bizarre and noteworthy examples of these human errors. Subscribe for more! ► http://bit.ly/BeAmazedSubscribe ◄ Stay updated ► http://bit.ly/BeAmazedFacebook https://twitter.com/BeAmazedVideos https://instagram.com/BeAmazedVideos◄ For copyright queries or general inquiries please get in touch: beamazedvideos@gmail.com Credit: https://pastebin.com/xwiD5BDP

Why is VENEZUELA a CATASTROPHY? - VisualPolitik EN

It wasn’t so long ago that Venezuela was the wealthiest nation in the entire of South America. Today, half of their population lives in extreme poverty. So, the question is… How did they end up there? What did their government do so wrong to destroy an economy in so little time? Today, we are gonna tell you the story. Did you enjoy our video? Click the 'subscribe' button and stay tuned for our new videos every week!

Are 2-Stroke Bicycle Engine Kits worth it? Let's find out!

Lots of requests for testing on 2-stroke engines. A 2-stroke bike seems like a great way to performance test alternative fuels and additives. I purchased the 2-stroke bike kit off of Wish.com, but they are also available on Ebay. Hope you enjoy the video and thank you very much for supporting the channel! https://www.patreon.com/projectfarm

Are electric cars greener than conventional gasoline cars? If so, how much greener? What about the CO2 emissions produced during electric cars' production? And where does the electricity that powers electric cars come from? Environmental economist Bjorn Lomborg, director of the Copenhagen Consensus Center, examines how environmentally friendly electric cars really are.
Donate today to PragerU! http://l.prageru.com/2ylo1Yt

Joining PragerU is free! Sign up now to get all our videos as soon as they're released. http://prageru.com/signup

Download Pragerpedia on your iPhone or Android! Thousands of sources and facts at your fingertips.

iPhone: http://l.prageru.com/2dlsnbG
Android: http://l.prageru.com/2dlsS5e

Join Prager United to get new swag every quarter, exclusive early access to our videos, and an annual TownHall phone call with Dennis Prager! http://l.prageru.com/2c9n6ys

Join PragerU's text list to have these videos, free merchandise giveaways and breaking announcements sent directly to your phone! https://optin.mobiniti.com/prageru

Do you shop on Amazon? Click https://smile.amazon.com and a percentage of every Amazon purchase will be donated to PragerU. Same great products. Same low price. Shopping made meaningful.

VISIT PragerU! https://www.prageru.com

FOLLOW us!
Facebook: https://www.facebook.com/prageru
Twitter: https://twitter.com/prageru
Instagram: https://instagram.com/prageru/
PragerU is on Snapchat!

JOIN PragerFORCE!

For Students: http://l.prageru.com/29SgPaX
JOIN our Educators Network! http://l.prageru.com/2c8vsff

Script:

Do electric cars really help the environment? President Obama thinks so. So does Leonardo DiCaprio. And many others.

The argument goes like this:

Regular cars run on gasoline, a fossil fuel that pumps CO2 straight out of the tailpipe and into the atmosphere. Electric cars run on electricity. They don’t burn any gasoline at all. No gas; no CO2. In fact, electric cars are often advertised as creating “zero emissions.” But do they really? Let’s take a closer look.

First, there’s the energy needed to produce the car. More than a third of the lifetime carbon-dioxide emissions from an electric car comes from the energy used make the car itself, especially the battery. The mining of lithium, for instance, is not a green activity. When an electric car rolls off the production line, it’s already been responsible for more than 25,000 pounds of carbon-dioxide emission. The amount for making a conventional car: just 16,000 pounds.

But that’s not the end of the CO2 emissions. Because while it’s true that electric cars don’t run on gasoline, they do run on electricity, which, in the U.S. is often produced by another fossil fuel -- coal. As green venture capitalist Vinod Khosla likes to point out, "Electric cars are coal-powered cars."

The most popular electric car, the Nissan Leaf, over a 90,000-mile lifetime will emit 31 metric tons of CO2, based on emissions from its production, its electricity consumption at average U.S. fuel mix and its ultimate scrapping.

A comparable Mercedes CDI A160 over a similar lifetime will emit just 3 tons more across its production, diesel consumption and ultimate scrapping. The results are similar for a top-line Tesla, the king of electric cars. It emits about 44 tons, which is only 5 tons less than a similar Audi A7 Quattro.

So throughout the full life of an electric car, it will emit just three to five tons less CO2. In Europe, on its European Trading System, it currently costs $7 to cut one ton of CO2. So the entire climate benefit of an electric car is about $35. Yet the U.S. federal government essentially provides electric car buyers with a subsidy of up to $7,500.

Paying $7,500 for something you could get for $35 is a very poor deal. And that doesn’t include the billions more in federal and state grants, loans and tax write-offs that go directly to battery and electric-car makers

The other main benefit from electric cars is supposed to be lower pollution. But remember Vinod Khosla’s observation "Electric cars are coal-powered cars."

Yes, it might be powered by coal, proponents will say, but unlike the regular car, coal plant emissions are far away from the city centers where most people live and where damage from air pollution is greatest. However, new research in Proceedings of the National Academy of Sciences found that while gasoline cars pollute closer to home, coal-fired power actually pollutes more -- a lot more.

For the complete script, visit https://www.prageru.com/videos/are-electric-cars-really-green

Comments for video: