Russia formally sold Alaska to the United States for just $7.2 million. While this may seem like an unbelievable bargain today, there were several strategic and financial reasons behind the sale.

This stunning slice of Maine remained relatively unknown—until 19th-century artists spread its beauty far and wide.

United States territories are diverse insular areas under U.S. governance. Discover the comprehensive United States ...

It may be time to revisit a concept both deeply historical and radically pragmatic: the idea that Jordan — long tied to the Palestinian people by geography, identity, governance and religion ...

“China has discovered it has leverage over the United States by using the rare earths and other critical minerals that it controls to turn on and off the spigot.

An air quality map shows conditions improving across the United States on Friday as smoke from the Canadian wildfires subsides after prompting air quality alerts and advisories in several states ...

Online map tools and resources let you track the Canadian wildfires and monitor poor air-quality conditions, which are impacting US states.

An analysis of minerals in the Watersmeet Gneiss (shown) suggest the metamorphic rock dates to about 3.6 billion years ago, potentially making it the oldest known rock in the United States. Paul ...

The United States had an enormous industrial base, abundant capital and a large domestic market, which enabled large-scale investment in research and development.

As the bird flu continues to spread across the United States, this map show the extent of the outbreak.