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After 40 years on the stand-up stage, countless comedy albums and iconic movies, Steve Martin is still finding new ways to make people laugh.

The comedian got on Twitter in 2010, and by now he has attracted nearly 2.5 million followers with his funny and slightly demented tweets.

On the Murray State University campus in Kentucky, warm weather has arrived. Students are out on the quad skateboarding, riding bikes, playing Frisbee and listening to music. But what are they talking about? Basketball.

"I think Murray State can go to the Final Four," one student says.

The MSU Racers have been in the tournament before, but with just a single loss this season and the highest tournament seed in the program's history, expectations are greater than ever.

The state Supreme Court in North Dakota is about to consider this question: Can lawmakers require a college to name its sports teams after a Native American tribe?

For decades, University of North Dakota teams have been known as the "Fighting Sioux." It's a name some see as an honor and others find demeaning. Now, the long fight over the Fighting Sioux may be settled in a courtroom.

2,400 Logos And A 'Vexing' Dispute

China's central bank is sitting on a giant pool of U.S. dollars. It's the world's biggest holder of foreign reserves, worth over $3 trillion at last count.

All that money has piled up because every year, China exports more than it imports; it runs a trade surplus.

There are lots of reasons for China's trade surplus. In the past few decades, China has built an amazing manufacturing ecosystem. It's become the factory to the world.

No nation has been sanctioned so frequently, and so thoroughly, as the Islamic Republic of Iran. For more than 30 years, the country has been under some kind of punitive economic measure.

The goal has been to prevent Iran from receiving and using the billions of dollars in oil profits that finance its nuclear program.

But none have been tougher, according to President Obama, than the sanctions his administration has imposed on Iran's banking system.