Your Nostrils Take Turns—Nobody Knows Why

Right now one of your nostrils is doing most of the work—and in a few hours the other will take over—yet science still has no settled answer for why this hidden shift schedule exists.Anyone can test it in ten seconds with a thumb, so it spreads as a self-check mystery; recent popular science explainers keep resurfacing the nasal cycle without closing the evolutionary why.Edward and Lily strip a…