Fig. 2. Graph of data from the past 20 years showing the total number of student interns involved with the U.S. Geological Survey/National Association of Geoscience Teachers (NAGT) Cooperative Field Training Program. The 1990s generally are characterized by a downward trend and the 2000s generally are characterized by an upward trend, although these trends may have been partly dependent on the availability of internships. Data were compiled from the NAGT Web site (http://serc.carleton.edu/nagt/programs/usgs_field.html).