Frigid air that normally stays trapped in the Arctic has escaped, plunging deep into the United States for an extended visit that is expected to provoke teeth-chattering but not be record-shattering.
Around 370 million years ago, Earth gradually descended into the longest lived and probably the most intense ice age ...
Upon entering a small room at Northlake Mall, a person steps onto a lighted floor. Underneath their feet, a heat illustration ...