As Illinois Republicans vote in their presidential primary, only one GOP candidate is expected to be in the state. Mitt Romney planned what he hopes to be a victory party Tuesday night in the Chicago suburb of Schaumburg.

Newt Gingrich is campaigning in Louisiana, which votes on Saturday.

Ron Paul is in California, which doesn't vote until June.

And Rick Santorum is in Pennsylvania, his home state, which votes on April 24.

Dr. Lawrence Pintak, Founding Dean of The Edward R. Murrow College of Communication, responds to the recent This American Life controversy surrounding their story on Apple's manufacturing practices in China. This commentary appeared today in the Columbia Journalism Review.

We hear a lot about juvenile offenders when they commit a crime — and again, when they're sentenced to spend the rest of their lives in prison. But not much is known about what happens after the prison gates slam shut.

The USGS says an earthquake with a magnitude of 7.4 hit southwest Mexico today.

The United States Geological Survey says it was 6.2 miles deep and about 120 miles east of Acapulco.

We'll have more on this story as it develops.

Update at 3:54 p.m. ET. Back To Normal:

NPR's Jason Beaubien, reporting from the Zocalo area of Mexico City, says officials report no deaths and no major damage.

To "strengthen our ability to continue providing the world's most insightful and investigative reporting in journalism," The New York Times says that starting in April it will limit non-paying NYTimes.com visitors to 10 free articles per month, down from the current 20.

The Times adds that:

Our collective mental image of Mexican artist Frida Kahlo has been informed, mostly, by the vibrant self-portraits she painted over the years. But she also had a collection of photographs — about 6,500 of them — that were held privately for decades after her death at the request of her husband, Diego Rivera.

After more than a week of grueling days on a dog sled, Dallas Seavey won 2012's Iditarod, beating his father and grandfather in the process. The race took off from Willow, Alaska, on March 4, Seavey's 25th birthday. Nine days, 4 hours and 29 minutes later, he crossed the finish line in Nome as the youngest musher ever to win the race.

Seavey talks with NPR's Neal Conan about the extreme conditions of the Iditarod, from freezing dogs to sleepless nights, and what it means to be in a legacy racing family.