Scientists solve the Irish potato famine mystery, pot boosts metabolism, Rep. Jeff Duncan plans to ban the census, and Noah Feldman describes the Cool War with China.

ABC's Jonathan Karl lies about the Benghazi scandal, Stephen applies for Tea Party tax exemption, and David Sassoon shares his e-book, "The Dilbit Disaster."

Congress peppers and grills Eric Holder, China seeks peace in the Middle East, a nonprofit provides access to printable guns, and Daniel Lieberman endorses toe shoes.

The UN describes bugs as "mini-livestock," Congresswoman Gwen Moore rides shotgun, and Cyndi Lauper outlines her Broadway musical, "Kinky Boots."

The House tries to repeal Obamacare again, an immigration study slams Hispanics, Maxim honors Miley Cyrus, and Dan Brown takes inspiration from Dante.

The Obama administration lies about Benghazi talking points, the IRS inspects Tea Party groups, and Jessica Buchanan and Erik Landemalm share their book, "Impossible Odds."

Carey Mulligan divulges a dark secret, Jennifer Egan discusses "The Great Gatsby"'s place in American letters, and Baz Luhrmann pays homage to F. Scott Fitzgerald.

Stephen's sister loses her run for Congress, Republicans spite Obama, parents forego diapers, and Richard Besser shares his book, "Tell Me the Truth, Doctor."

Fox News prepares for the Benghazi whistleblowers, Rep. Donna Edwards deals with a senile senior, teens amp up their promposals, and Douglas Rushkoff pinpoints the present.

Stephen plugs cOlbert's Book Club, conspiracy theorists explain the government's ammo purchases, dogs ride the Mary Jane train, and Robert Caro scares Republicans.

The Feds identify three accomplices in the Boston bombings, President Obama addresses the Gitmo hunger strike, and Sir Ben Kingsley chats about "Iron Man 3."

A Newtown victim's daughter confronts Senator Kelly Ayotte, pro-gun senators lose voters' support, and Macklemore and Ryan Lewis share their album, "The Heist."

Congress disregards the Army's wishes, Iowa cracks illegal immigration, Budweiser encourages Facebook friendships, and Evan Spiegel and Bobby Murphy make photos disappear.

Jason Collins comes out as gay, New Zealand sanctions same-sex marriage, conservatives get defensive, criminals turn to Yelp, and Iggy Pop performs shirtless.

Stephen starts an "O" Book Club, Matt Cartwright speaks Spanish, Fox & Friends gets the word out about a guy singing like a canary, and Gene Robinson advocates gay rights.

Twitter hackers trigger a market crash, Bill Clinton picks a dignified Twitter name, the Mars rover draws a penis in the sand, and NASCAR's Danica Patrick manages her rage.