Published August 24, 2012, 12:00 AM
Sanford physicist Brent Colby shows off a thermal strip
Sanford physicist Brent Colby shows off a thermal strip that operates like a mood ring to Robin Huebner on Tuesday at Sanford Hospital in Fargo. Michael Vosburg / Forum Photo Editor
Read the article: Robin Huebner reports: Many experts say cellphones harmless, but questions persist
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