Organic farmer Will Muir of Wholesome Living Farm breaks through the ice on a pond so his cows can access drinking water in the midst of bitter cold below-zero temperatures on January 7, 2014 in Winchester, Kentucky. Temperatures in the single digits coupled with below-zero wind chills have prompted the closure of local governments, schools, and businesses throughout the South. Luke Sharrett/Getty Images/AFP
: A man bundles up against the cold on the afternoon of January 8, 2014 in New York City. Today was slightly warmer than yesterday, when a polar vortex descended from the Arctic on much of the country, though today's temperatures were still well below freezing. Andrew Burton/Getty Images/AFP