Talk of the Nation

When singer-songwriter India.Arie broke through in 2001, her debut album Acoustic Soul went double platinum, and her music and influence continued to gain momentum in the years that followed. Since her debut, she's been nominated for 21 Grammys — and won four — while selling 10 million albums worldwide.

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NEAL CONAN, HOST:

This is TALK OF THE NATION. I'm Neal Conan.

We've all seen a flock of birds shift direction instantaneously mid-flight, or a school of fish swirl in what looked like tightly choreographed maneuvers. That's called collective behavior and it fascinated and baffled scientists. Why do they do it? How? Telepathy? Now technology is revolutionizing the way researchers can track, visualize and even create swarms, and what they're finding will make you go wow.

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NEAL CONAN, HOST:

And today, film farewells. We consider the great goodbye scenes in movie - boy loses girl for good; hero sets off to certain doom; or a Mother's Day remembrance from Jimmy Cagney.

(SOUNDBITE OF MOVIE, "WHITE HEAT")

JAMES CAGNEY: (as Cody Jarrett) Made it, Ma! Top of the world!

(EXPLOSION)

Forty years after the Senate committee hearings on the Watergate scandal, Political Junkie Ken Rudin talks with Lowell Weicker, who served on the Senate Watergate committee. Former White House speechwriters Paul Glastris and Peter Robinson talk about writing speeches amid scandal.

Two years after Suleika Jaouad was diagnosed with acute myeloid leukemia, she is cancer free. A month before her 25th birthday, she is starting to travel and think about her career again. As part of TOTN's "Looking Ahead" series, Jaouad reflects on regaining a bit of normalcy.

Chronic obstructive pulmonary disease (COPD) is a progressive lung disease that slowly robs sufferers of the ability to breathe. COPD is the third leading cause of death in the U.S., surpassed only by cancer and heart disease. There are treatments, but no cure for the disease.

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LYNN NEARY, HOST:

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LYNN NEARY, HOST:

This is TALK OF THE NATION. I'm Lynn Neary in Washington; Neal Conan is away. For the second day in a row, lawyers questioned potential jurors in the George Zimmerman trial. Zimmerman is charged with second-degree murder for the shooting death of Trayvon Martin in Sanford, Florida, last year.