US Cell Phone Use and Incidence of Brain Cancer: 1991-2008

Image Showing Inventor Dr. Martin Cooper and a Prototype of the DynaTAC
Image contrasting the number of minutes of cell phone use per day in the United States (blue line) with the number of new brain cancer diagnoses (red line) from 1991-2008.
Source: Scott Woolley, "Cell Phone Use Is Way up. So Why Did Brain Cancer Rates Fall?,", June 7, 2011