[2] In those days he had come into prominence after co-authoring the ARK II: Social Response to Environmental Imperatives with Paul R. Ehrlich, which was published in 1974.
In the late 1990s Pirages also served as director of the Harrison Center on the Future Global Agenda at the University of Maryland.
Notable exceptions however are William Ophuls, Lester W. Milbrath, Lynton K. Caldwell, Harold and Margaret Sprout, and Pirages, who all wrote extensively on the environment.
[8] Pirages (1977;10) started, that: Around the same time Robert L. Stivers had also published a pioneering work on the sustainable society.
"[10] According to Faber et al (2005) both perceptions of a sustainable society are static, and have the shortcoming that they don't take into account possible changes of the physical and social environments.