Diane Rehm, host of the NPR national radio program "The Diane Rehm Show," talks about her new memoir "On My Own," which chronicles her life after the death of her husband, John, from the effects of Parkinson's disease.

Author Geoffrey Cowan talks about his new book "Let the People Rule: Theodore Roosevelt and the Birth of the Presidential Primary." The book chronicles the story of Theodore Roosevelt's campaign to challenge his handpicked successor, William Howard Taft, for the Republican Party nomination. To overcome the power of the incumbent, Roosevelt seized on the idea of presidential primaries, telling bosses everywhere to "Let the people rule."

On the opening weekend of the Newseum's newest exhibit "CNN Politics Campaign 2016:Like, Share, Elect," CNN's Brian Stelter moderates a discussionon how digital and social media have transformed politicalcampaigns.

Kelly McEvers, co-host of NPR’s “All Things Considered,” talks about hosting the award-winning afternoon newsmagazine and her past work covering hot spots around the globe. She will also talk about her new podcast “Embedded” which takes stories from the news and takes you to where they are happening.

Margie Omero and Kristen Soltis Anderson, co-hosts of “The Pollsters” podcast, discuss campaign 2016 and the rise of political podcasts.

Politico correspondents Anna Palmer and Jake Sherman provide an insider’s view of the 2016 election year and the presidential and congressional campaigns.

Washington Post film critic Ann Hornaday previews the 88th annual Academy Awards and discusses some of the biggest hits — and misses — of the year.

Jason Samenow, Angela Fritz and Kevin Ambrose, members of the Washington Post’s popular blog “The Capital Weather Gang,” will talk about the science of forecasting, current climate trends and why so many of us are obsessed with the weather.

CBS News congressional correspondent Nancy Cordes discusses the presidential campaign and previews the critical Feb. 9 New Hampshire primary.

Cordes also talks about the results of the Feb. 1 Iowa caucuses and the major primaries and debates in the coming months.

David Kaczynski, brother of Ted Kaczynski, whom the FBI branded the “Unabomber,” talks about his new memoir “Every Last Tie: The Story of the Unabomber and His Family.”