Eyewitness Books is a series of nonfiction books intended for children and young adults. The series now has over one hundred titles on a variety of subjects, such as dinosaurs, Ancient Egypt, flags, chemistry, music, the solar system and film. The books are often noted for their numerous photographs and detailed illustrations, which are always set against a white background. Describing the series in Booklist, Michael Cart wrote, "What DK did—with almost revolutionary panache—was essentially to reinvent nonfiction books by breaking up the solid pages of gray type that had previously been their hallmark, reducing the text to bite-size, nonlinear nuggets that were then surrounded by pictures that did more than adorn—they also conveyed information. Usually full color, they were so crisply reproduced they "seemed to leap off the page."