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In the 1960s, researcher John B. Calhoun conducted a groundbreaking experiment called "Universe 25," which explored the effects of overpopulation on a society. He created a controlled environment—a mouse utopia—where he provided abundant food, water, and shelter, yet limited space. Initially, the mouse population thrived, growing rapidly. However, as the population density increased, strange behaviors began to emerge: aggressive encounters, social withdrawal, and disrupted reproduction. Over time, the community collapsed, with the once-thriving society deteriorating into chaos and extinction. Calhoun's experiment raised unsettling questions about the sustainability of populations in confined spaces and the impact of overpopulation on social structures. His work has since been referenced in discussions about urbanization, resource management, and the psychological consequences of overcrowding. Could this experiment offer a glimpse into the future of human societies facing similar challenges?
