Coal rescues U.S. power grid during Polar Vortex
By Terry Jarrett Guest columnist
phoenixvillenews.com

Another winter, another cold snap. Right now, much of the United States is feeling the chill of a brutal “Polar Vortex.” And northern states like North Dakota and Minnesota are seeing night-time temperatures drop below zero degrees Fahrenheit. In fact, Duluth is currently chasing a record for the coldest sustained weather, set way back in 1912. Click here to download the article.

Thanks for the share, KE!