Book excerpt: Famed for his supposed encounter with a falling apple that inspired his theory of gravity, Isaac Newton (1642–1727) grew from a quiet and curious boy into one of the most influential scientists of all time. Newton's Rainbow tells the story of young Isaac—always reading, questioning, observing, and inventing—and how he eventually made his way to Cambridge University, where he studied the work of earlier scientists and began building on their accomplishments. This colorful picture book biography celebrates Newton's discoveries that illuminated the mysteries of gravity, motion, and even rainbows, discoveries that gave mankind a new understanding of the natural world, discoveries that changed science forever.