Many candidates for government offices, such as David Duke (in November 1991) have appeared on Nightline to try to promote themselves.Seeing that there are a large number of prisons in the United States, it created an ongoing series in 1994 called "Crime and Punishment".During Ted Koppel's tenure as anchor (and on rare occasions since his departure), Nightline devoted each episode to a unique subject.Since its inception, the program has covered many subjects (science, education, politics, economics, society, and breaking news).
Examples of this were the deaths of John Lennon (1980) and Yasser Arafat (2004).
In 1983, ABC attempted to change the program's format to feature multiple topics and expand it to one hour, as opposed to focusing on a single topic in a half-hour.
This switch proved to be unsuccessful, and after a few months, the original format of the program was restored.
In November 1992, science reporter Michael Guillen did the first live broadcast from Antarctica.
There were times when a major breaking news story occurred as late as p.m.