"I'm still stuck on November 21, 2021. I don't know anything about the world." So said Spanish extreme athlete Beatriz Flamini after exiting a cave outside Granada on Friday where she passed the last 500 days with zero human contact. The BBC describes it as both a possible world record-setting feat and an experiment that was monitored—from a contactless distance—by psychologists, speleologists, and other scientists. Now 50, Flamini passed the time in the 230-foot-deep cave by reading (finishing a book roughly every 8 days), knitting, drawing, and exercising. What she didn't do: shower. "I haven't touched water for a year-and-a-half," she said after emerging, beyond the 1,000 liters she consumed. More: