Book excerpt: What clutter-busting need was behind the invention of the World Wide Web? Which stain-fighting chemical got its start when a lab assistant dropped a beaker on a lab floor? In S is for Scientists: A Discovery Alphabet, the origins behind some of the most important scientific discoveries are explored. Budding young scientists will learn what Galileo witnessed in a church that led to his theory of measurement; how biologist Rachel Carson's book, Silent Spring, helped to spur the first call to action in the environmental movement; and why Ivan Pavlov's study of a drooling dog laid the foundations for a new branch of psychology. From discoveries that fundamentally changed scientific methods to everyday inventions that are now taken for granted, S is for Scientists sheds light on the events and people who have shaped our lives today. A former teacher, Larry Verstraete now spends his time writing, visiting schools and libraries, and presenting at conferences and festivals. S is for Scientists: A Discovery Alphabet is his second picture book with Sleeping Bear Press. He lives in Winnipeg. David Geister's fascination with American history is celebrated in his work, and his paintings have been featured in The Saturday Evening Post. Dave's books for Sleeping Bear Press include B is for Battle Cry: A Civil War Alphabet and Riding to Washington. He lives in Minneapolis, Minnesota.