Many, many years ago, Alvin Silverstein and Virginia Silverstein worked together on a scientific research project at the University of Pennsylvania. Since then, the pair have published more than 160 books on science and health topics. Along the way, they also had six children. One of them, Robert Alan Silverstein, joined his parents' writing team in 1988 and has written more than 40 books with them.
Robert Silverstein currently works with international peace organizations and creates electronic books and other materials for Web sites.