If you're looking for local angles or a broader followup to NBC's announcement that cable newscaster Brian Williams will succeed Tom Brokaw as NBC network news anchor, several University of Wisconsin-Madison experts can help.

For nearly two decades, there has been little turnover among the featured names in national television news, but now the country's TV networks seem poised for big changes in news operations as they look for ways to keep viewers and attract a younger audience.

For perspectives on the changes and historical context for the evolution of the networks, consider contacting these three university experts:

-- James Baughman, professor of journalism and mass communication, can discuss the history of television and journalism in the 20th and 21st centuries, and the historical relationships of news media to politics and foreign policy.

-- Michele Hilmes, professor of communication arts, has written about the history of radio and television broadcasting and has researched the extensive NBC archives at the Wisconsin Historical Society. She is well-versed in network changes resulting from the rise of 24-hour cable news channels.

-- James Hoyt, professor emeritus and former director of journalism and mass communication, worked for NBC News in Washington, D.C. and can discuss many aspects of broadcast news, its changing values and journalism in general.

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