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.
So, if you haven't gotten your feet wet yet, no worries. In fact, the average age when people lose their virginity has risen. From 1988 to 2002 the percentage of teens who had had sex by age 17 fell by 15 percent in boys and 6 percent among girls. Religion, family situation, education and ethnicity also play a role, but only shift the data a little in any direction.