Why do we sneeze when it's sunny?

A-choo! Does being outside on a sunny day ever make you sneeze? You’re not alone! But what causes these sunshine sneeze attacks? We asked scientist Dr. Kira Bacal to help us find the answer. 

Got a question that you’re a-chooing on? Send it to us at BrainsOn.org/contact, and we’ll find an answer that’ll blow your mind.