We begin in theory, in order to end up in a mystical contemplation of the nature of the universe and the stars. Well, music is tones that follow each other in a certain order, and a tone is actually a kind of sound. It is a vibration that is created by the shaking of matter. This energy vibrates the surrounding...

The questions around the meaning of dreams and where dreams actually come from have been around for a very long time. In ancient Egypt and Greece, for example, dreams were thought to be sent by the gods to express their will. Even though we feel much more advanced, smarter and more educated than people who lived a few thousand years...

Many people don't really know what they are talking about when they talk about lucid dreams. It's not that you wake up in the morning and you say, "Hmmm, I had an interesting and very vivid dream today, just like reality, I guess that was the lucid dream as it's being written about now." In fact, the name lucid dream...

Sleep is a natural state that is actually the opposite of wakefulness. It is a state in which our physical activity is very much reduced and our consciousness is somehow disconnected from external reality. The body is resting. But what does our brain do when we sleep? Is it also resting?