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Follow Up: How Much Radiation Is A Lot?04:54
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On Tuesday, we aired a story featuring a Cambridge cartoonist with a physics background named Randall Munroe who created a chart comparing radiation exposures from various common sources.

The intention was to provide context for the numbers being thrown around in news coverage of the Fukushima disaster, but many listeners felt like the comparisons minimized the danger of certain radiation exposures.

Friday, we follow up with MIT radiation physicist Jacquelyn Yanch, who says radiation levels that governments consider dangerous for regulatory purposes are, in fact, much lower than those levels scientists actually know to be dangerous.

Guest:

This segment aired on March 25, 2011.

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