Need To Know

Coal mine safety, microwork for women, Spiderman's Taymor

This week on Need to Know: A look at coal mine safety. The U.S. ranks low in a global education study. A social innovator outsources "microwork" to developing countries. Jon Meacham analyzes the tax cut deal. And director Julie Taymor on the Spiderman musical and her new adaptation of Shakespeare's "The Tempest."

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