Death Squared: No-One Got Out Alive in The Universe 25 Experiment, 1968-1972 – Flashbak

The Universe 25 experiment, carried out by American scientist John Calhoun between 1968 and 1972, produced an unexpected result. A once thriving community of 2,200 of mice had collapsed. Just over 100 remained alive, and soon they would all be dead. The mice would become extinct. Is humanity next?

Source: Death Squared: No-One Got Out Alive in The Universe 25 Experiment, 1968-1972 – Flashbak