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

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.

A U.S. EPA report stated that 55% of U.S. rivers are in bad condition. View this beautiful interactive map for inspiration to protect these waterways.

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 ...