Talk of the Nation

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.

Writer Donna Britt's 26-year-old brother was killed by Indiana police officers decades ago. Amidst the news of Trayvon Martin's death, she is reminded of the unanswerable questions surrounding her brother's death. She talks about the challenges of coming to terms the violent death of a loved one.

Transcript

NEAL CONAN, HOST:

At least 70 countries, including the U.S., pledged millions of dollars in aid to the Syrian opposition. U.N.-Arab League envoy Kofi Annan has set a deadline of April 10 for compliance with the U.N. peace plan. Some analysts believe it's too late for peaceful negotiations.

This mystery has plagued arachnologists for decades. William Eberhard and Daniel Briceno untangle the web question in a paper in the journal Naturwissenschaften. The answer has to do with spiders' oily, hairy legs.

The film director James Cameron has just completed a dive to Challenger Deep, the deepest point on Earth at nearly 36,000 feet under the sea. His manned descent is the first in 52 years, since the oceanographers Don Walsh and Jacques Piccard explored the Mariana Trench in the bathyscaphe Trieste.

Want to hear a joke about sodium hypobromite? NaBrO! Can science be the butt of a good joke? Ira Flatow and guests test the hypothesis in an annual April Fools' joke-a-thon. They share the best gags in the business. Sidesplitting or groan-worthy? You decide.

In The Age of Insight: The Quest to Understand the Unconscious in Art, Mind and Brain, Nobel Prize-winning neuroscientist Eric Kandel writes of turn-of-the-century Vienna, where artists mingled with writers, scientists and physicians, and explains how the brain perceives a work of art.