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 ...

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 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.

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 ...

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 ...

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.

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 ...