States are part of countries, and countries may be grouped by other areas, like continents, hemispheres, or a political or ...

The United States is currently experiencing an intense cold front linked to the so-called Arctic “polar vortex”.

America is bracing for the coldest arctic blast of the season as a polar vortex is set to bring 'most severe' cold snap and ...

It’s not clear if Canada wants to become a U.S. state, though technically it would be possible without its buy-in ...