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For Frequent Fliers, How Big a Concern Is Backscatter Body Scan Radiation?

As millions of Americans take to the skies for holiday travel, some scientists have raised concerns about the small dose of ionizing radiation emitted by backscatter full-body scanners used to screen passengers at U.S. airports. In partnership with ProPublica, Miles O\'Brien examines what we do and don\'t know about the machines.
Length: 11:08

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