Fifteen People Live 40 Days In Sunless Cave Without Clocks To Study Time
Fifteen people lived 40 days in sunless cave without clocks to study time. https://www.vice.com/en/article/v7emd3/15-people-lived-40-days-in-a-sunless-cave-without-clocks-to-study-time (Photo courtesy of Vice)
CIA Asks Spy Applicants To Tell Time By Visual Clues
CIA asks spy applicants to tell time by using visual clues. https://mol.im/a/9008289 (Photo courtesy of The Guardia