According to the Center for Disease Control, approximately one in every twelve Americans has asthma. Throw airborne allergies into the mix and we’re talking about 20% of the populace suffering from a breathing condition. Though most people turn to aerosols and sprays in an effort to “clean” the air at home, those products only mask the problem, and in some cases, make it worse. Screaming aside, apparently people can hear you sneeze in space, so, lucky for us, NASA went to work. The Airocide Air Purifier ($799) is the beautiful end result of a dozen years of "up there" field testing, and it's now available for purchase by us mere mortals.