Corrugated cardboard has two main components: the linerboard and the medium. Both are made of a special kind of heavy paper. Linerboard is the flat facing that adheres to the medium. The medium is the wavy fluted paper in between the liners. Single Wall is manufactured with the medium between two sheets of linerboard. Double Wall has three sheets of linerboard with two mediums in between.
A new Microsoft-commissioned survey shows European girls lose interest in STEM subjects around the age of 15. Microsoft admitted it doesn't have a comprehensive explanation for why 15-year-old girls lose interest in science and math.
Young Girls, Older Boyfriends & Sex. June 15, 2006 -- Girls with an older boyfriend at a young age may be more likely to have sex by ninth grade. And those with a serious boyfriend by seventh grade are also more likely to have had sex two grades later. So says a study in June's issue of Perspectives on Sexual and Reproductive Health.