Each of these mornings will bring a hard freeze, with air temperatures in the teens and 20s and dangerously cold wind chills ...

Extreme cold warnings were issued for an 11-state swath of the U.S. stretching from the Canadian border to Oklahoma and ...

Three days before the Declaration of Independence was signed on July 4, 1776, Thomas Jefferson purchased a thermometer from a local Philadelphia merchant while he was in town for the signing. He also ...