BUBBLE WRAP. Engineers Alfred Fielding and Marc Chavannes came up the idea for bubble wrap while working on a new type of textured wallpaper in 1957. By sealing two shower curtains together, they trapped a layer of bubbles.
Immigration and Customs Enforcement. Special agents at Immigration and Customs Enforcement, the largest investigative agency in Homeland Security, are classified as criminal investigators. They start at GL-7 with an annual base salary range of $33,829 to $42,055, or GL-9 with an annual base salary of $42,948 to $55,413.
Supervisory special agents receive salaries based on step 14 of the federal government's General Service salary schedule, the FBI reports. GS-14 salaries in 2011 for the Washington, D.C., and northern Virginia area ranged from $105,211 to $136,771 per year.