What is a rainbow and what does a rainbow mean to you? We've all seen a rainbow stretching across a stormy sky but have you ever wondered why they appear and what makes them so colorful? Explore how rainbows have fascinated scientists and artists, inspired myths and legends, and united people around the world. and discover the many ways -- from flags to fairy tales, songs to sculptures, and paintings to proverbs -- that humankind have celebrated these dazzling, natural wonders.