A few weeks after the Sept. 11 terrorist attacks, an FBI agent called the Whitney Museum of American Art and asked to see a drawing on exhibit there. The piece was by Mark Lombardi, an artist who had committed suicide the year before. Using just a pencil and a huge sheet of paper, Lombardi had created an intricate pattern of curves and arcs to illustrate the links between global finance and international terrorism.

Something to listen to while you look through the year in graphs.

NPR : The 'Conspiracy' Art of Mark Lombardi