INTRO
When my favorite ski crew recently skated into an afternoon groomer under a bluebird sky, it had been two years since we last skied together. Travel restrictions, new jobs, old jobs, new babies, and old knees made it difficult to be in the same place at the same time for a while, but the stars finally aligned. Two years of cosmic doom receded as we arced wide, fast turns across the lane. I held back, reveling in the joy I knew they felt. Watching their turns felt even better than making my own. A scientist at Brigham Young University, Nathaniel M. Lambert, studies the perks of moments like these. His research shows that sharing a positive experience with someone else heightens its impact not just for the person having the experience,…