Will my new Himalayan salt block lamp really clean the air? [more inside]
posted by longsleeves on Oct 22, 2009 - 15 answers

Should I get an "Ionized Air Filter"? [more inside]
posted by Avenger on Oct 15, 2007 - 16 answers

Science Question of the Day: Does anyone know how those home mist machines work? This site says something about negative ions, but it sounds sketchy. Can anyone give a good explanation of how it works? There is something electricity-related going on inside, but what exactly?
posted by statisticalpurposes on Apr 24, 2004 - 10 answers