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Watch the best debate zingers and bloopers. CNN's Jeanne Moos showcases memorable debate moments.

CNN's Gloria Borger looks back at past debate mistakes among former presidential candidates.

CNN's Gloria Borger speaks to former Vice President Walter Mondale about his debate against Ronald Reagan in 1984.

Police say Katlynn Goodwill Yost has been found, unharmed. They also say two men were arrested and a teen was detained in the investigation of three bodies found in a California home.

An elementary school lunch lady is 100 pounds lighter after she ate her own cafeteria food every day for a year.

During an appearance on "The Late Show with Stephen Colbert," first lady Michelle Obama did an impersonation of President Barack Obama at the dinner table.

Author and political historian Ellen Fitzpatrick speaks to CNN's Fredricka Whitfield about women's struggles in politics and the workplace.

A hypothetical U.S. electoral map, a potential foreign policy challenge for the next U.S. president, and an American drug epidemic are all featured this Monday.

Many fast food restaurants are using antibiotics in their meat. Dr. Sanjay Gupta explains the potentially harmful consequences.

Since 1992, the Bush and Clinton families have had a turbulent relationship. Now they have a formed a something of a friendship. Will it last through 2016?

Donald Trump's campaign manager, Kellyanne Conway, talks with CNN's Jake Tapper about the upcoming first presidential debate.

A woman shoots at burglars during a fatal home invasion in Gwinnett County, Georgia. One of the burglars died of his injuries.

Betty Shelby, the officer who fatally shot Terence Crutcher in Tulsa, has been charged with manslaughter. CNN's Sara Sidner talks to Crutcher's sister Tiffany.

In a year filled with so much name-calling, a selection of some of the nice(ish) ways that Donald Trump and Hillary Clinton have referred to one another.

Frank Sesno, Eleanor Clift and Dylan Byers join Brian Stelter to dissect the media's role setting expectations for debates.

The New York Times, Los Angeles Times, Washington Post and Politico have all concluded that Trump is uniquely fact-challenged. The panel reacts.

Miami Marlins pitcher José Fernández, one of baseball's brightest stars, was killed early Sunday in a boating accident, Florida authorities said.

The Clinton campaign is concerned that Trump is being graded by the media "on a curve." Press secretary Brian Fallon says "the bar needs to be the same for both candidates."

Janet Brown, executive director of the Commission on Presidential Debates, says negotiations with the campaigns have been smooth, despite predictions that Trump might back out.

This is what Jim Lehrer and Ann Compton what Lester Holt to know before moderating Monday's presidential debate.