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More from humancycle

The “HOPE” Experiment: During a brutal study at Harvard in the 1950s, Dr. Curt Richter placed rats in a pool of water to test how long they could tread water. On average they'd give up and sink after 15 minutes. But right before they gave up due to exhaustion, the researchers...See more

More from humancycle

The “HOPE” Experiment: During a brutal study at Harvard in the 1950s, Dr. Curt Richter placed rats in a pool of water to test how long they could tread water. On average they'd give up and sink after 15 minutes. But right before they gave up due to exhaustion, the researchers...See more