Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. Leaves are the food factories of the tree. Powered by sunlight, the green ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. Leaf shapes play an important role in tree identification, providing key ...

Since Philadelphia is arranged on a grid system, the mostly one-way roads are easy to navigate. Helpful maps are posted along street corners across the city – watch for the "Walk! Philadelphia" signs ...

The second-largest city in the Lone Star state, San Antonio is located on the southern edge of the mountainous Texas Hill Country. Its streets follow old Spanish trails and 19th-century wagon trails ...