The most populous country in North America (the United States) is also home to some of the largest cities in North America, but the No. 1 spot goes to Mexico City.

Archeologists are reconstructing the history of the ancient megacity of Teotihuacán using the nearly 2,000-year-old remains ...

According to the team, there is a high chance that a connection exists between the volcanic eruption, the subsequent changes ...

No disease man can ever spread will be as deadly as war. In the 21st century, an age in which even the most destitute on the ...

Subtle Advantage Tilts the Scales in Penn State’s Favor for Crucial Orange Bowl Clash With Notre Dame I'm an American who's lived in Paris for years. Taking notes from the French improved my skin and ...