Terry Gross

Two years after the death of her husband, Joan Didion suffered the untimely loss of her only daughter. She pieces together her memories of Quintana Roo in her new memoir, Blue Nights.

Many of Spencer's novels feature a turning point — a dreadful, unplanned act committed by one of the characters. In his latest book, Man in the Woods, a carpenter accidentally kills a man, which leads him to question himself and his relationship with God.

This interview was originally broadcast on Sept. 15, 2010. Man in the Woods is now available in paperback.

David Carr, who writes the Media Equation column for The New York Times, says that despite cuts, the future of journalism has never looked brighter. "I look at my backpack that is sitting here and it contains more journalistic firepower than the entire newsroom that I walked into 30-40 years ago," he says.

Since 2006, 40,000 people have been murdered in Mexico as drug cartels battle each other and the Mexican military. Journalist Ioan Grillo traces how Mexico came to control drug trafficking in El Narco.

More than half of all employed people worldwide work off the books. And that number is expected to climb over the next decade. Investigative journalist Robert Neuwirth examines how the underground economy works in his book, Stealth of Nations.

In a new book, medical ethicist Harriet Washington details how genes and tissues are increasingly being patented by pharmaceutical and biotechnology companies. Those firms, she argues, are focused more on their profits than on the medical needs of patients.

The actor plays a righteous federal agent who succumbs to all sorts of temptations on the HBO drama Boardwalk Empire. To build the character of Nelson Van Alden, he says, he worked out an elaborate back story about the agent's childhood.

Fallon is thankful for slow walkers, people named Lloyd and the word "moist." The comedian and host of Late Night collects more than 100 nuggets of gratitude in his book Thank You Notes. He talks with Terry Gross about giving thanks and doing impressions.

This interview was originally broadcast on May 23, 2011.