Writer Howard Rheingold. Rheingold's new book, "Virtual Reality," is a look at the growing promise and impact of a radical new technology. By combining computers with sophisticated equipment (such as 3-D video glasses and gloves that sense how the wearer is moving their hands), it's possible to create the illusion that one is in another world, one that may exist only inside the computer. The technology has implications for everything from space exploration to entertainment, medicine to warfare. (The book's published by Summit Books).