Calhoun Mice Utopia Experiment
Like 0 Dislike 0 Published on 23 Feb 2016
In the late 20th Century, John B. Calhoun decided to make Utopia; it started with rats. In 1947 he began to watch a colony of Norway rats, over 28 months he noticed something, in that time the population could have increased to 50,000 rats, but instead it never rose above 200. Then he noticed that the colony split into smaller groups of 12 at most. He continued to study rats up until 1954. Then in 1958, he made his first lab.
He bought the second floor of a barn, and there he made his office and lab. For four years he had Universe 1, a large room hosting rats and mice alike. It was split into four spacious pens connected by ramps, each filled with rats. The thronging mass of rodents produced an odour so strong that unaccustomed visitors took several minutes until they could breathe normally. In 1963 he produced his most famous creation, Universe 1. The worlds first mouse mortality-inhibiting-environment.
2.7 metres square with 1.4m high walls. The ‘Universe’ was surrounded by 16 tunnels leading to food, water and burrows. No predators, no scarcity, the mice would have to be blind to not see the utopia around them. At least it began as Utopia. Four breeding pairs of mice were introduced into Universe 1. After 104 days they adjusted to the new world and the population began to grow, doubling every 55 days. By day 315 the population reached 620. Then is stopped. The population grew much more slowly as the mice came against the limit of space, their only limiting frontier.
Society broke. Young were expelled before they had been properly weaned and were arbitrarily attacked by excessive aggressive male mice. Females became more aggressive, non-dominant males became passive, not retaliating to attacks. The last healthy birth came on the 600th day. Then there were no new mice. Then there were none.
(from the article "Death By Utopia" by ALEXANDRE COATES http://www.mostlyodd.com/death-by-utopia )