Some days, you just know the weather’s about to shift. You haven’t seen the clouds roll in or checked the forecast, but something in the air tips you off. Usually, it’s the way things smell. As rain or snow gets closer, the air changes, sometimes...

Synesthesia is a neurological phenomenon in which the automatic activation of one sense reliably triggers a perception in another. It results from greater cross-activation between sensory areas in the brain that occurs in most people. While usually separated...