What do you wonder about? What Is . . . discusses material that perplexes most people at some point in their life. What is time? Is it an illusion? What is the origin of the universe? What is the origin of animal life on Earth? Mass, charge, and spin are the three properties of elementary particles. What are mass, charge, and spin? What is consciousness? What is the answer to the hard problem of consciousness? What is the mind? How does the brain store and retrieve our memories? How is the sex one identifies with (that is one's gender-male or female) determined? What are data, information, knowledge, and wisdom? Can luck change the course of history? These things and so much more are covered here. Dare to open your mind and imagination to the way things we all wonder about work. This book will make you think, inspire you to deduce-on your own-additional truths about nature, and also give you a leg up in your own studies.