<p>At the University of Montreal's Dream Engineering Lab, scientist&nbsp;<strong>Michelle Carr</strong>&nbsp;works through the night trying to better understand why we dream&nbsp;– and especially why we experience nightmares. She says we too often dismiss bad dreams as "just dreams," when they're actually real experiences with real effects. Carr joins <strong>Piya Chattopadhyay</strong> to discuss the latest developments in sleep science, and how we have more control over our dreams than we may think.</p>