Rosenberg was awarded the National Humanities Medal in 2008 by President George W. Bush, "for bringing the world of ideas to millions of listeners.
For a brief period Rosenberg served on the staff of the Naval War College, and he has lectured at various other universities both in the United States and abroad.
The program, which aired Sunday through Thursday (originally Monday through Friday) from 10 p.m. to midnight (an hour later than formerly), dealt with topics ranging from politics to financial investment to entertainment to religion to foreign policy to literature, and, as Milt says, "just about everything except pop psychology and poodle-trimming."
Calling upon journalists, academics, corporate types and just about any and every profession, Extension 720 provided highly varied nightly shows.
Other interesting public figures who have appeared on the program include Colin Powell, Charlton Heston, William Safire, Bill Murray, William Bennett, Richard Posner, Bob Feller, Betty Friedan, Zbigniew Brzezinski, Cynthia Ozick, Norman Mailer, Mary Higgins Clark, Calvin Trillin, P.D.
James, Peggy Noonan, David Brinkley, George Will, Stanley Kurtz, Ron Paul, Gerry Spence, Jim Lehrer, Michael Medved, Carl Sagan, and on and on—virtually a cast of thousands of interesting and significant people.