Lois H. Gresh is the author of ten books ranging from science fiction and fantasy to pop culture and science. Her DragonBall Z book is a lighthearted look at one of the most popular anime series in the world. Published by St. Martin's in August 2000, DragonBall Z has already sold more than 50,000 copies, and Gresh has received more than 1,500 fan letters from readers. Gresh is Creative-Technical Director of Novatek Communications, Inc., where she is immersed in digital animation--the backbone of anime--as well as digital video and audio, and other forms of multimedia technology. Robert Weinberg is the author of more than twenty-five books, many of them dealing with science and pop culture. A graduate of Stevens Institute of Technology, he holds two degrees in mathematics and taught college mathematics for five years. With Lois H. Gresh, he's written The Computers of Star Trek (Basic Books) and The Science of Superheroes (John Wiley & Sons). At present, Robert works as a writer for many of the largest comic book companies including DC and Marvel.