What is a dream? The most accessible definition is that it is simply a series of images, sounds, and emotions that are experienced during sleep. What causes dreaming? When the body enters REM sleep, it begins to send signals to different parts of the brain. These signals go through parts of the brain associated with memory and emotions. Though no one knows where dreams originate or what the purpose of dreaming is, many scientists hypothesize that it is the result of the highly active, yet random, neuronal firings. These scientists would speculate that dreams are your brain trying to make sense of random emotions and memories. For example, being fearful because you dream that you are lost in the woods might simply be the brain stimulating the fear center at the same time that it stimulates the memory of trees or forests. Do we dream in color? About 60% of people report that they "always" dream in color. 32% of people report that they sometimes dream in color and only 7...