Slideshow (PowerPoint) --Subject adaptable to multiple instructional levels (high school-college)"Are there limits to economic growth?Are we reaching the planet’s ability to tolerate us?"Provided as open source material for teachers and parents by political economist John Hardesty, Ph.D. and Rumble Media.[Economics, Politics, Science, Ecology, Environmental Studies, Sociology, Anthropology, Conservation Biology, Social Science, History, etc.]SEE also: Film Discussion Guide, Planet of the Humans