For a closer look at the chaos in Syria, we turn now to Jon Lee Anderson. He's a reporter for The New Yorker magazine, and last month he spent time in Syria, reporting on the rapidly devolving situation there.
We reached him at his home in England, and he told us about one moment that has stayed with him - his visit to a place called Clocktower Square, in Homs, the site of intense clashes over the past year.
The de facto replacement for The News of the World, The Sunday Sun, will premiere its first issue Sunday. Host Rachel Martin talks with Ray Snoddy, a British journalist, about what this means for Rupert Murdoch's media empire.
In the mid-1980s, Simon Norton was considered one of the great mathematical prodigies of the 20th century. He worked on a hyper-dimensional math problem so complex it was called "The Monster." But then things fell apart for Norton, and he ended up in a dingy basement packed with bulging plastic bags and piles of bus timetables.
On-Air Challenge: Every answer is the name of a film that won an Academy Award for Best Picture. Identify the films from their anagrams.
Last Week's Challenge: What is the longest common English word you can spell by taking the beginning letters of consecutive states in order as you travel through them? Puzzlemaster Will Shortz's answer has eight letters, but maybe you can top that.
Puzzlemaster's Answer: "Millions," which consists of the beginning letters of Missouri, Illinois, Iowa, Nebraska and South Dakota.