The world is full of questions. For centuries, scientists have pondered, and answered, many of them. The Big Questions in Science delves into 20 of the most intriguing, far-reaching and "of-the-moment" questions in science today. Three experienced science writers go in pursuit of the answers, translating complicated concepts into lively discussions for anyone who has ever wondered who we are, why we are here, and what "here" actually is. Some of the questions, such as "What is consciousness?" and "What makes us human?" are eternal; others, such as "Are there other universes?" and "What's at the bottom of a black hole?" take us into other dimensions; and some, such as "Can we beat bacteria?" and "How do we get more energy from the sun?" urgently require practical answers. All of them speak to our sense of wonder and the desire to know more.