These books are super skinny and heavily illustrated, have jumbo-sized font and plenty of white space, and include only three-to-five sentences per page. Even so, there's a satisfactory amount of substantive and accessible information contained in the standard overview of each subject's life and accomplishments. Grasping all of the scientific principles presented may be a bit of a stretch, however. The text is enhanced by the period photographs and their helpful captions, but unfortunately, Venezia's trademark cartoons do little to increase understanding. Most fall flat, many are puzzling, and some trivialize the seriousness of the subject (a cartoon in Einstein depicts the man flying through space and observing that it beats doing laundry). Still, Venezia is no stranger to series nonfiction, and in libraries where his other "Getting to Know..." books circulate, these will also.