Dreams

Dr. Westley Youngren, an assistant professor of psychology at the University of Missouri-Kansas City, is researching ways to treat nightmares caused by trauma or PTSD.

Humans spend one-third of their life sleeping, yet the purpose and function behind this regular state of unconsciousness remains a biological mystery. Sleep researcher Giorgio Gilestro is trying to understand some basic questions about it: like what sleep exactly is, and why it’s even necessary.