Kathy Wollard is the author of Newsday's popular 'How Come?' column. She has a physics and journalism degrees from New York University and has written about science and health for Self, Scholastic, Popular Science, and Family Fun magazines. A former New Yorker, she and her husband, author Evan Morris, now live in rural Ohio. Dan Kainen is an artist, designer, and inventor living in New York City. He is the creator of the bestselling Photicular books, Safari, Ocean and Polar. His website is DanKainen.com. While working with some of the pioneers of holography, Dan created a special spotlight that was used by Soho’s Museum of Holography to light holograms. The related field of holography led to Dan’s interest in lenticular art, and in turn, after nearly a decade of research and experimentation, to the creation of his 'Motion Viewer,' his third patent in that field and the inspiration for Safari and the other Photicular books.