The polar vortex that dipped south over the weekend kept much of the country east of the Rockies in its frigid grip Monday, ...

While tribal, federal, state, officials expected to attend event are lauding move, President-elect Trump threatens to reverse course.

While tribal, federal, state, officials expected to attend event are lauding move, President-elect Trump threatens to reverse ...

The next round of bitter cold is set to envelop the southern U.S. on Tuesday, after the first significant winter storm of the ...