Will Big Data and Big Money Mean Big Trouble?

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It’s "the Year of Big Data." What is it? What are the benefits and the dangers? Why are numerous federal agencies about to begin a major research initiative on big data? Also, can the international community heal a fractured Syrian opposition? On Reporter's Notebook, did Trayvon Martin or George Zimmerman call for help? As public reaction continues, we hear about voice analysis of a cry for help. 

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