Everyday Radiation Exposure Is A Tiny Health Risk

We've heard about radiation from the damaged nuclear reactors in Japan reaching U.S. shores. Professor Peter Caracappa, of the Rensselaer Polytenchic Institute, talks to Renee Montagne about different types of radiation people encounter and how to weigh the risks.

Source: http://www.npr.org/2011/03/30/134974395/Radiation-Update?ft=1&f=1007

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