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A British professor is urging for the use of ferrite beads on wired, hands-free headsets to absorb excess radiation that may travel up the outside of the wire. The same sort of ferrite beads are often seen on monitor cables—it's that bulging cylinder right before the plug—and should add only pennies and a little weight to the headsets. While no one will cop to the idea that radiation from cellphones is harmful, if you're already going through the effort to stave off potential tumors by using a hands-free earpiece you might as well take it all the way.

Bead 'slashes mobile radiation' [BBC via TheInquirer]

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