NIH Studies Conducted 50 Years Ago Showed Societal Collapse Brought About Extinction
William Vogt, Paul Ehrlich, and the others were neo-Malthusians, arguing that population growth would cause our demise by exhausting our natural resources, leading to starvation and conflict. But John Calhoun’s “Universe 25” experiments on rats and mice showed that overcrowding on its own could destroy a society before famine