How does gravity work?
The Where, the Why, and the How: 75 Artists Illustrate Wondrous Mysteries of Science is the extensive and detailed tome full of the questions and mysteries that fuel scientific discovery. Questions range from need-to-know like "What triggers puberty?" to big, largely unanswered mysteries like "What is dark energy?"
What existed before the Big Bang?
Each question comes with not only an illustration but a detailed explanation with as much current scientific information as possible. Other topics include what causes depression, why we dream, whether or not immortal creatures exist (they do), why cats purr, and much more.
What is the God Particle?
What is dark energy?
Why do cats purr?
What is dark matter?