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AUDIE CORNISH, HOST:

We turn now to the last U.S. ambassador stationed in Venezuela. Patrick Duddy represented the U.S. first under the Bush administration then later under the Obama administration. He was once expelled from Caracas. Ambassador Duddy is now a visiting senior lecturer at Duke University's Center for International Studies. When we spoke today, I asked him what it was like for him to be an ambassador to Venezuela under Chavez.

Scientists are beginning to understand how people tune in to a single voice in a crowded, noisy room.

This ability, known as the "cocktail party effect," appears to rely on areas of the brain that have completely filtered out unwanted sounds, researchers report in the journal Neuron. So when a person decides to focus on a particular speaker, other speakers "have no representation in those [brain] areas," says Elana Zion Golumbic of Columbia University.

The world often feels full of fading traditions, from drive-in movie theaters to the dying art of good old-fashioned letter writing.

For the British, add brass bands to that list. Traditional brass bands have played an important cultural role in working-class British communities for centuries. But some warn that without funding, they could become a thing of the past.

Take the Grimethorpe Colliery Band in South Yorkshire. The band was originally formed in 1917, and nearly 100 years later, a group of tuba, euphonium and other horn players still bears the band's name.

The next pope will be the spiritual leader of the world's Catholics. He will also be leading a multibillion-dollar financial empire. And from a business perspective, the Catholic Church is struggling.

We talked to several people who study the business of the church. Here are a few of the issues they pointed out.

1. Globally, the church's employees are in the wrong place.

The death of Venezuelan President Hugo Chavez is an especially tough blow for Cuba, whose feeble state-run economy has been propped up for more than a decade with Venezuelan oil shipments and other subsidies.

The Castro government has declared three days of mourning, calling Chavez "a son" of Cuba, but privately Cubans are quietly fretting about the potential loss of billions in trade and the threat of a new economic crisis.