In this illuminating book, professors Arthur Wiggins and Charles Wynn explore what they believe are the five biggest science problems: Physics: Why do some particles have mass, while others have none? Chemistry: By what series of chemical reactions did atoms form the first living things? Biology: What is the complete structure and function of the proteome? Geology: Is accurate, long-range weather forecasting possible? Astronomy: Why is the universe expanding faster and faster? Wiggins and Wynn carefully explain each of these problems, then discuss the theories that address them. Some of the many topics covered include string theory, the human genome, chaos theory, and protein folding. Featuring humorous illustrations from renowned science cartoonist Sidney Harris, this book invites you to explore the events that led to these problems and the cutting-edge efforts being made to solve them. The authors also provide Idea Folders, which contain additional details about the unsolved problems, and Resources for Digging Deeper, such as books, periodicals, and Web sites.