Orange no-entry signs posted by the U.S. military in English and Spanish dot the New Mexico desert, where a border wall cuts ...

The saguaro cactus is the iconic plant of the Arizona borderlands, and in June and early July, its fruit ripens.

Pitch Pine Pitch pine trees (Pinus rigida) grow along the eastern North American coast and as far south as northern Georgia. This species thrives in a humid climate and on sandy, shallow soils.