Indiana ranks worst in the U.S. for lung health due to high smoking rates and poor air quality, while Colorado and Hawaii ...

Millions of motorists across the U.S. will see a gas tax hike starting Tuesday. Here's where fuel taxes are rising.

The America you know and love could look completely different in a matter of weeks. Under a plan circulating the D.C. corridor right now, up to 16 states are at risk to be terminated due to epic ...

Illustrative image of a bride and groom and a wedding cake, along with a magnified map of the United States. Marriages with only one spouse present at the ceremony are legal in four states.

In total, the United States spans over 3.5 million square miles, according to States Symbols USA. The fifty states are home to millions of people, with California being the state with the largest ...

Twenty-three percent of Americans would support the state they live in seceding from the United States and becoming an independent country, according to a new survey of 35,000 U.S. adults ...

Nearly two dozen state geological surveys depend heavily on federal funds. A proposed budget cut could slow or stop key ...

Here are United States Forest Service geographic maps defining the 20 major forest cover types in the United States and where common trees are most often located based on frequency of occurrence.

The left panel of a mural containing a relief map of the United States showing the west coast. In lower right, a banner with rolled end containing words "Relief Map / United S_____". Credit Line Gift ...

Sweltering heat happens every summer, but to get close to the bar of a state's all-time hottest temperature usually takes a heat wave that's on another level.