NPR News

When Iran's supreme leader got a Facebook page in December, Iranians sat up and blinked.

Some thought it was a fake, finding it hard to believe that Ayatollah Ali Khamenei would be using a technology that his own government blocks. A U.S. State Department spokeswoman skeptically wondered how many "likes" it would attract.

But some of Khamenei's supporters quickly rallied behind the move, which first came to light in a reference on — you guessed it — the ayatollah's Twitter account.

When Wal-Mart calls, Herman Farris always finds whatever the retailer wants, even if it's yucca root in the dead of winter. Farris is a produce broker in Columbia, Mo., who has been buying for Wal-Mart from auctions and farms since the company began carrying fruits and vegetables in the early 1990s.

During the summer and fall, nearly everything Farris delivers is grown in Missouri. That's Wal-Mart's definition of "local" — produce grown and sold in the same state. In winter, it's a bit tougher to source locally.