Talk of the Nation on KCCU-HD2

NPR's Neal Conan reads from listener comments on previous show topics, including postcards from New Orleans and our talk with astronaut Buzz Aldrin.

The trial of Jodi Arias, convicted of murdering her boyfriend, has become a national media sensation. Former Law and Order producer Robert Nathan and authors Laura Lippman and Walter Mosley explore why Americans are so drawn to real-life courtroom dramas.

Retailers are under pressure after a building collapse killed more than 1,100 garment workers in Bangladesh. But global demand for inexpensive clothing shows no sign of abating. The New York Times' Steven Greenhouse and Elizabeth Cline, author of Overdressed: The Shockingly High Cost of Cheap Fashion, unravel the prospects for improved safety in the garment industry.

The debate continues over the handling of the September attack on the U.S. compound in Benghazi, Libya. But retired Marine Col. Gary Anderson says some important lessons have already been learned about strengthening diplomatic security and inter-agency communication.

Saul Perlmutter shared the 2011 Nobel Prize in physics for his discovery that the universe was expanding at an accelerating rate. Perlmutter explains how supernovae and other astronomical artifacts are used to measure the expansion rate, and explains what physicists are learning about "dark energy" — the mysterious entity thought to be driving the acceleration.