The understanding of John B. Calhoun’s research that circulated in the 1960s and ’70s runs something like this: Calhoun built a large but enclosed living space suitable for housing several ...

The problem was overpopulation; the diagnostician was John B. Calhoun ... “Mrs. Frisby and the Rats of NIMH,” seemingly took inspiration from Calhoun’s work. In 1970 a Newsweek reporter ...

One of Davis’s assistants, a young ecologist named John B. Calhoun, suggested an experiment. What if additional rats were introduced on a street? Would the population increase? Calhoun trapped ...

The closest thing to utopia the world has ever seen might have existed in a Maryland barn for a couple of years during the late 1960s: a complex built for rodents as part of a science experiment.

What does utopia look like for mice and rats? According to a researcher who ... These were all part of John Calhoun’s experiments to study the effects of population density on behavior.

RAT CITY: Overcrowding and Urban Derangement in the Rodent Universes of John B. Calhoun, by Jon Adams and Edmund Ramsden There used to be a guy who’d turn up around New York wearing a two-tone ...

People predicting the end of world generally make those predictions without scientific evidence to support them. So when an animal-behavior researcher ran experiments in the 1960s that described ...

This mix of “weird dystopian science and bleak urbanist history” tells the story of John B Calhoun, an ecologist hired to rid Baltimore of its rat problem. His subsequent research into rat ...