Think you know everything about the United States? Think again! This video reveals 50 incredible US geography facts that ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. Here is an index map of 20 major timber types in the United States as ...

Are you sure you really need to load up Google Maps? Or is it time to learn how to read road maps and mile markers for your ...

Amtrak provides a vital service to U.S. commuters; however, many states have limited access to its train network, and several ...

BACKGROUND: Previous research suggests that exposures to air pollution and nonoptimal temperatures are associated with a ...