Morning Edition

The two dominant candidates for U.S. Senate from Massachusetts say they want to keep superPAC ads out of the state. Sen. Scott Brown and his Democratic challenger Elizabeth Warren have signed a pledge requiring that each candidate donate half the cost of any outside ad to charity, if that ad either supports their candidacy or attacks their opponent.

The hotly-contested Republican primary has gotten a lot of attention lately. Tuesday night, President Obama has a chance to reclaim the spotlight. He's delivering his annual State of the Union address. It's a high-profile platform for the president as he tries to frame the choice facing voters in November.

Seventy five years ago, before Theodor Geisel rocked the culinary world with green eggs and ham or put a red-and-white striped top hat on a talking cat, Geisel (who you probably know better as Dr. Seuss) was stuck on a boat, returning from a trip to Europe.

For eight days, he listened to the ship's engine chug away. The sound got stuck in his head and he started writing to the rhythm. Eventually, those rhythmic lines in his head turned into his first children's book: It was called And to Think That I Saw It on Mulberry Street.

To spend a day in the life of National Geographic photographer Joel Sartore, there are a few things you have to get used to. Really long drives, for one. Tigers charging at you. And, of course ... well ... messes.

"I'm the only studio portrait photographer I know whose subjects routinely poop and pee on the background right in front of me," he says from behind the lens.

The New York Giants made the Super Bowl with a three-point win over San Francisco. The New England Patriots made the Super Bowl with a three-point win over Baltimore. Now Las Vegas oddsmakers are taking bets on the big game. The Patriots are favored to win by three.

Court opinions are usually not that exciting but a judge in Chicago is trying to liven up his rulings with illustrations. In one, he used an iconic photo of Bob Marley. The case was about a prisoner's right to keep his dreadlocks on religious grounds.

Tens of thousands of people are attending the Jaipur Literature Festival in India — including many international literary stars and Oprah Winfrey. Author Salman Rushdie was invited but decided not to attend after a warning that hit men would be after him. Rushdie wrote The Satanic Verses which has been banned in India for more than 20 years.

David Greene checks in with Jennifer Gibbons, editor of "The Cordova Times" in Cordova, Alaska. We last heard from her two weeks ago when her community had declared an emergency during its efforts to dig out of record amounts of snow.

Over the past half-century more than 20 million acres of U.S. farmland were transformed into housing developments. With new home construction all but stopped, farmers in many areas are buying or leasing land once slated for development and planting crops on it.

The Arab League has launched a new plan to stop the crisis in Syria. The plan was announced in Cairo by the premier of Qatar. It comes after the Arab League's own observers completed a month-long mission in Syria.