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.
Average and Median Earnings. As of 2011, police and highway patrol officers earned an average of $27.05 an hour and $56,260 a year. Half of all police and highway patrol officers made between $19.77 and $33.65 an hour and between $41,110 and $69,990 a year, according to the Bureau of Labor Statistics. Approximately 636,410 police and patrol officers were employed in the United States as of May 2011.