This paper looks at the field of environment-behavior studies as it has evolved in North America. Using the orthogenetic principle of development, the field can be seen to have passed through a global undifferentiated stage and periods of differentiation and articulation. While some might claim there has been an appearance of a consolidated perspective, this may be true for certain sub-disciplines like environmental psychology or sociology, but not for the filed as a whole. This paper traces recent developments and retrenchments and looks at similarities and differences between the various sub-disciplines.