Certain statistic and scientometric features of articles published in the journal "International Research in Geographical and Environmental Education" (IRGEE) are examined in this paper for the period 1992-2009 by applying nonparametric statistics and Shannon's entropy (diversity) formula. The main findings of this analysis are: (a) after 2004, the research priorities of researchers in geographical and environmental education seem to have changed, (b) "teacher education" has been the most recurrent theme throughout these 18 years, followed by "values & attitudes" and "inquiry & problem-solving" (c) the themes "GIS" and "sustainability" were the most "stable" throughout the 18 years, meaning that they maintained their ranks as publication priorities more than other themes, (d) citations of IRGEE increase annually, (e) the average thematic diversity of articles published during the period 1992-2009 is 82.7% of the maximum thematic diversity (very high), meaning that the Journal has the capacity to attract a wide readership for the 10 themes it has successfully covered throughout the 18 years of its publication. (Contains 6 tables and 2 figures.)