Americans spent $1.2 trillion on travel, about $3,600 per person. But in a country so large, American travel ta ...

Homes in the US are heated by a variety of fuels. The interplay of who, what, and where is on full display in this detailed ...

North America is the third largest continent in the world. It is located in the Northern Hemisphere. The north of the continent is within the Arctic Circle and the Tropic of Cancer passes through ...