Sleep Like an Astronaut: NASA's Sleep Scientist on Body Clocks, Shift Work & Sleep Apnea in Space

Ever feel jet-lagged on a Monday without leaving your house? Or notice that a few night shifts can scramble your sleep for a week? Now imagine a sunrise every 90 minutes. That's life on the International Space Station, where astronauts circle the Earth on a loop of 45 minutes of light and 45 minutes of dark. So how does NASA get them to sleep? Not with a gadget. With a bedtime. On my birthday (yes, really), I sat down with Dr. Erin Flynn-Evans, director of the Fatigue Countermeasures Labor...