Changes

Coal power still accounts for 39% of America's electricity power. This means that electric vehicles will still be responsible for producing CO₂. A North Carolina State University study showed that a nation full of electric cars powered will make no ecological difference. <ref>[http://www.investors.com/politics/editorials/tesla-the-coal-powered-car-wont-be-saving-the-world/ Tesla, The Coal-Powered Car, Won’t Be Saving The World, Investors.com, April 4, 2016]</ref> This is due in part to its production costs, rare metal mining, energy consumed over its lifetime.  

Coal power still accounts for 39% of America's electricity power. This means that electric vehicles will still be responsible for producing CO₂. A North Carolina State University study showed that a nation full of electric cars powered will make no ecological difference. <ref>[http://www.investors.com/politics/editorials/tesla-the-coal-powered-car-wont-be-saving-the-world/ Tesla, The Coal-Powered Car, Won’t Be Saving The World, Investors.com, April 4, 2016]</ref> This is due in part to its production costs, rare metal mining, energy consumed over its lifetime.  

The disposal of batteries is also a concern. Dead ones can't be tossed in a landfill and few companies will recycle lithium batteries and electric cars have giant batteries.

The battery is the heart of electric cars. Disposal of batteries is also a concern. Dead ones can't be tossed in a landfill and few companies will recycle lithium batteries and electric cars have many large batteries. Seasonal weather changes, extreme cold, affect battery performance. In 2014, it was measured to be half as efficient. <ref>[http://www.forbes.com/sites/jimgorzelany/2014/03/24/the-cold-truth-icy-temps-can-slash-an-electric-cars-range-by-more-than-half/#59b9efd626d7 The Cold Truth: Icy Temps Can Slash An Electric Car's Range By More Than Half, Forbes, March 24, 2014]</ref>

==References==

==References==