11.   A scalp-cleansing brush promises to wipe out dandruff with negative ions.

12.   FEA-JAPAN-IONIC GADGETRY Negative ion fad has Japanese buying up gadgets.

13.   Hitachi and Matsushita are planning a negative ion vacuum cleaner.

14.   Jewelers are pushing necklaces of tourmaline, a stone believed to release negative ions.

15.   Negative ions are molecules with an extra electron that gives them a negative charge, and positive ions are those with an electron missing.

16.   Risa Ogi puts negative ion rocks by her bed to sleep better and believes the popularity of negative ions shows how overworked people are worried about their health.

17.   These days, negative ions are popping up everywhere you go.