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 ...

While the name of John Bumpass Calhoun might not be familiar to everyone these days, he and his life’s work — studying rats and mice — were grounded here in Baltimore at the Johns Hopkins University ...

S tanding before the Royal Society of Medicine in London on June 22, 1972, the ecologist-turned-psychologist John Bumpass Calhoun, director of the Laboratory of Brain Evolution and Behavior at the ...

Just about every student of animal behavior has studied the work of Dr. John Calhoun, famously or infamously known for his rodent apartment complexes like “Mouse Universe 25,” which led to his concept ...

Rats are as bad as human beings in some ways. In the latest Journal of Wildlife Management, Dr. John B. Calhoun, of Johns Hopkins, discusses one such aspect of the rat world: the troubles which ...