Investigative journalist Ross Halperin discusses his debut book "Bear Witness: The Pursuit of Justice in a Violent Land."

St. John's College president J. Walter Sterling discusses the meaning and nomenclature of the liberal arts.

Civil Rights Corps executive director Alec Karakatsanis discusses his book "Copaganda: How Police and the Media Manipulate Our News."

Federal Reserve Bank of Dallas president emeritus Robert Kaplan discusses the historical and contemporary U.S. economy.

"The Vagina Business" author Marina Gerner discusses long overdue innovation in women's reproductive health.

Investigative reporter Jake Adelstein discusses the Japanese government, yakuza, and fight against corruption.

"Breaking the Two-Party Doom Loop" author Lee Drutman discusses the urgency of electoral reform.

GWU president emeritus Stephen Trachtenberg discusses the future of American education.

Science journalist Dan Levitt discusses his book "What's Gotten Into You: The Story of Your Body's Atoms, from the Big Bang Through Last Night's Dinner."

University of Wisconsin Institute for Discovery director Jo Handelsman discusses threats to scientific research.