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University of Illinois physicists have experimentally demonstrated for the first time how three-dimensional conduction is affected by the defects that plague materials.

I was struck today by the juxtaposition of two recent articles here at ScientificAmerican.com . In “ Thin Body of Evidence ,” John Horgan expresses his skepticism about journalist Gary Taubes’s claims that carbohydrates, not fat, are the cause of obesity, heart disease and other health problems faced by many Americans