J. T. "Tom" Johnson, an expert on using computers and the Internet for reporting, has worked in publishing, journalism, and higher education for more than 25 years. In February 1997 he became deputy editor of the St. Louis Post-Dispatch after a long career as a professor of journalism at San Francisco State University. He also has been a visiting professor at the Graduate School of Journalism at Columbia University and an editor with Scientific American/W. H. Freeman and Company in San Francisco. He has written for TIME, Fortune, Omni, Discover, Smithsonian, Mother Jones, and many other magazines.