A scientist created a 'utopia' for mice and then they all started dying

A scientist created a 'utopia' for mice and then they all started dying

In 1968 John Calhoun, a scientist and animal behavioralist, decided to create a "utopia" for mice. It would have unlimited food and water, with beautiful nesting spaces and plenty of materials for the mice to make cozy homes with. Sweet experiment! the mice were probably thinking. Much better than the Maybelline trials we're used to.However, there was a catch, of course. There was one thing the utopia would be lacking, and that would be physical…