Terry Gross

Writer Judith Shulevitz started observing Shabbat because of her own ambivalence about the traditional weekly day of rest. Her own experiences with the ritual -- as well as its larger historical context -- are examined in her new book, The Sabbath World: Glimpses of a Different Order of Time.

The Iranian-American journalist was imprisoned in Iran, interrogated, tried and eventually released. But the controversy continues. Saver says she confessed to her crimes in order to get out of jail but asserts she did nothing wrong. Her new book Between Two Worlds is an account of her time in captivity.

In 2008, historian Tony Judt was diagnosed with ALS, a progressive motor-neuron disease. For the past several months, Judt has been writing a series of essays for The New York Review of Books, charting life in what he calls a "progressive imprisonment without parole."

The number of hate groups in the United States continues to rise, says Mark Potok of the Southern Poverty Law Center. Potok discusses how the rhetoric of hate groups has increasingly entered the mainstream in the wake of the nation's changing demographics and the election of President Obama.

The bawdy, crudely animated sitcom South Park is about to celebrate its 200th episode. Creators Trey Parker and Matt Stone go behind the scenes of some of their favorite episodes and explain how they come up with the weekly parodies.

Superbug, a new book by journalist Maryn McKenna, tracks the spread of MRSA, the drug-resistant staph infection that seems to outwit every antibiotic thrown at it. McKenna explains how the bacteria has changed over the past 30 years -- and how a vaccine may be the only way to stop it.

The star of Noah Baumbach's new film, Greenberg, initially wanted to be a serious actor -- and he's still got a thing for Vietnam War movies. Stiller talks to Terry Gross about how he got from that initial ambition to films like Meet the Parents and Zoolander.

A fiery feminist, former political reporter and founder of the National Women's Political Caucus, Carpenter was the person who wrote the 58-word text that newly sworn-in President Lyndon B. Johnson read when he returned to Washington after President Kennedy's assassination. LBJ's onetime executive assistant was also press secretary to Lady Bird Johnson; Fresh Air remembers her with excerpts from a 1987 interview.

Chilton, who died Wednesday from a heart attack, was the lead singer of the '60s teenage band the Box Tops and the '70s power pop group Big Star. He joined Fresh Air for two interview, first in 1991 and again in 2000. Today, we remember the cult musician.

Until his arrest in 2004, nuclear scientist A.Q. Khan -- the father of Pakistan's atomic bomb -- ran a vast smuggling network that sent nuclear material to Iran and Lybia. In his book Peddling Peril: How the Secret Nuclear Trade Arms America's Enemies, weapons expert David Albright explains how Khan's network continues to threaten global security.