Zeitgeber

36.08 - MU Podcast - Free-Running | The Human Clock

Mysterious UniverseAug 28, 2026

Hosts Joe Hodgkin and Brandon Thomas dig into Alan Burdick's 2017 book Why Time Flies to explore how humans perceive and keep time, from atomic clocks to the clocks inside our own cells. The centerpiece is French geologist Michel Siffre, who lived alone in caves without clocks in 1962 and 1972, losing track of entire weeks as his body's internal rhythms drifted apart. Along the way the hosts riff on synchronicities, underground-dwelling beings, and the strange ways nature keeps time.