Inauguration on track to be coldest in 40 years as more than 300 million people could be hit by below-average freezeArctic air is expected to sweep across much of the United States later this week and into next week, bringing dangerously cold temperatures and severe wind chills.The National Weather Service has warned that this frigid air will move over the Rockies and Great Plains on Friday, and by Saturday night it will head toward the Gulf coast and the midwest, reaching the east coast by Sunday night. Continue reading...