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After 911 tapes were released, the story of Trayvon Martin, an unarmed teen who was killed by neighborhood watch volunteer George Zimmerman, received a flurry of national attention. Much of the subsequent news coverage is focused not on the case itself, but the narrative constructed by the media.

A home run by Washington Nationals outfielder Jayson Werth during spring training had baseball lovers breaking out the tape measure to figure out how far the ball had gone. Sports writer Jane Leavy explains the practice that dates back to Mickey Mantle's historic 565 foot hit in 1953.

Shopping apps and retail websites give consumers the power to compare prices, read reviews and shop on the go. Stephanie Clifford, business reporter at The New York Times and market researcher Paco Underhill discuss how many brick-and-mortar stores are altering pricing strategies.

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NEAL CONAN, HOST:

Earlier this year in the run up to the primary election, political analysts explained that Florida really isn't a Southern state anymore and would not vote the same way as Alabama or Mississippi or Georgia. Then the shooting death of Trayvon Martin prompted some to argue that nothing's changed in a part of the state steeped in racial violence. In a way, both statements hold up.

NPR's Neal Conan reads from listener comments on previous show topics including extreme rivalries in sports, those living with obsessive-compulsive disorder and the legacy of legendary women's basketball coach Pat Summit.

Norwegian scientists say as many as 1 in every 4 cases of breast cancer doesn't need to be found because it would never have caused the woman any problem.

It's a startling idea for laypeople (and many doctors) thoroughly indoctrinated with the notion that any breast cancer is medically urgent — and should be found at the earliest possible moment.

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MICHEL MARTIN, HOST:

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MICHEL MARTIN, HOST:

I'm Michel Martin and this is TELL ME MORE from NPR News. Coming up, it's National Poetry Month, and just as we did last year, we want the celebration to include you, so once again we're inviting you to send us your poems via Twitter. Poet Holly Bass kicks off our month-long tweet poetry series. We call it Muses and Metaphor. That's in just a few minutes.