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This article presents information, related to science. Radio frequency identity tags can help distinguish genuine from phoney goods — and for some raise civil liberties issues, such as the possibility of roadside detectors tracking whose underwear goes where by the chips embedded in it. The phytoplankton Chattonella ovata, which can turn the sea red, was blamed in Kagawa prefecture. Finally, after buying a carton of putty for his wife to fix a window with, reader John Henderson was puzzled by her reluctance to use it. Then he looked at the label, which said: "Remove skin before use."