In this book for general readers in high school and up, Wiggins (physics, Oakland Community College) and Wynn (chemistry, Eastern Connecticut State University) explain five of science's biggest unsolved problems and discuss the theories that address them. Featuring humorous illustrations from science cartoonist Sidney Harris, as well as b&w historical photos of science pioneers, the book invites readers to explore the events that led to the formation of these problems and the cutting-edge efforts being made to solve them. "Idea folders" provide further information and web sites of interest. Annotation 2004 Book News, Inc., Portland, OR (booknews.com)