What started as a progressive collection of web-based articles that answer questions about the world around us is now compiled in Life's Little Mysteries Book, an illustrated gift book suitable for all ages. We answer 115 questions on topics such as, "Why is the sky blue?" "Why don't woodpeckers get headaches?" and "Why are marathons 26.2 miles long?" Have you ever wondered when the red carpet tradition began or why popcorn pops? We answer those strange...