On Wednesday, Mississippi Gov. Phil Bryant appointed the state's Agriculture Commissioner Cindy Hyde-Smith to a U.S. Senate seat, replacing Sen. Thad Cochran. With that appointment, Vermont is now the only state to never send a woman to Congress .
Why do people dream? Why do people have nightmares? How do dreams happen? Can people who are blind can see in their dreams?
In this episode of But Why , we're answering dreamy questions with psychiatrist Dr. David Khan of Harvard Medical School.