Mary Roach demystifies the digestive process, Egypt suffers democratic growing pains and John Oliver investigates violence against guns.
Denise Kiernan investigates the women of the Manhattan Project., The Supreme Court hears gay marriage arguments and Rupert Murdoch looks to expand his reach in LA.
Eva Mendes talks "The Place Beyond the Pines", Government doesn't work for returning veterans and the Supreme Court weighs in on same-sex marriage.
"Salt Sugar Fat" author Michael Moss shares processed food industry secrets, Republicans reboot and Larry Wilmore offers the GOP minority outreach advice.
"Game of Thrones"' Peter Dinklage coins a phrase. Barack Obama brokers Middle Eastern peace and Al Madrigal investigates a lesser-known form of gun violence.
Tom Coughlin discusses his book, "Earn the Right to Win", Biological imperatives end Rand Paul's filibuster and potential papal successors gather in Rome
Neil deGrasse Tyson explains the Russian meteor event, Rand Paul filibusters for real and Al Madrigal questions Puerto Rico's desire for statehood.
Sandra Day O'Connor discusses her life on the bench and her book, "Out of Order" and the Supreme Court reconsiders the Voting Rights Act.
Congress punishes itself by not punishing itself, Dennis Rodman reaches out to Kim Jong-un, and Paul Rudd discusses his life on the Supreme Court.
Rachel Maddow decodes the Supreme Court, Bob Woodward runs afoul of the White House and Jason Jones battles maple syrup addiction.
R.J. Cutler describes "The World According to Dick Cheney." , Wall Street enjoys a boom and Italy wanders into a religious and political power vacuum.
Lori Silverbush and Kristi Jacobson discuss hunger and "A Place at the Table", Dov Hikind addresses the blackface controversy and Robert Gibbs acknowledges the drone programme.
Donnie Wahlberg straddles the police communities of Boston and New York, Mississippi's Dick Molpus is vindicated and Samantha Bee prepares for post-sequester America.
Steven Brill discusses his health care industry investigation, The White House vows greater transparency and Jessica Williams joins up with Texas secessionists.
Helaine Olen discusses her book, "Pound Foolish", Republicans revenge themselves on Chuck Hagel and Mississippi ratifies the 13th Amendment.
Alison Brie talks "Community," "Mad Men," and Springsteen, Great Britain questions the quality of its fast food and the meteor explosion over Russia fails to resonate.
Susan Rice shares her side of the Benghazi story, CNN owns the cruise ship story and John Oliver meets with the secretary general of the Organisation of Islamic Cooperation.
Fawzia Koofi discusses her book, "The Favored Daughter", President Obama updates America on the State of the Union and Marco Rubio takes a water break.