Twenty states (plus D.C.) had "very high" levels of the virus present in wastewater, an increase from 16 states the week ...

Another Arctic blast has been forecast to bring frigid air to a large section of the United States later in January.

President-elect Trump on Tuesday continued to troll Canada as a potential addition to the U.S., sharing maps showing Canada as part of the U.S.

An American aircraft carrier continued to patrol the South China Sea, and a Chinese "flattop" concluded a sea trial.

Mexico's president sarcastically said that the U.S. should be called "Mexican America" after Trump's vow to rename the Gulf ...

Trains revolutionized transportation in the US. People were no longer dependent on horse-drawn carriages and natural waterways to move across the country. The rapid spread of railroads made the ...

US President-elect Donald Trump shared a map on the social media platform TRUTH depicting Canada as part of the United States ...

Mystery drones flying over the US have prompted wild theories, ranging from the government faking alien attacks to an incursion from Iran. Hundreds of sightings have concentrated in the east coast ...