See Ecopsychology. Ralph Metzner prefers the term "green psychology" because instead of sounding like yet another discipline or departmental specialty, it refers to what psychology should have been doing all along: visualizing human beings in our ecological context. In his book by the same name he notes, "The absence of any consideration given to the ecological basis of human life in textbooks and theories of psychology is startling: it's as if we lived in a vacuum or space capsule. "