Terrible twos, temper tantrums, and grocery store meltdowns are usually the first things that come to mind when people think of toddlers. But pediatric emergency medicine physician and researcher Dr. Hasan Merali has long thought toddlers are among the best people in our society and adults could do well to learn from them. These extraordinary youngsters can be impulsive, yes, but with this comes a remarkable ability to take risks and ask questions--two...